Streamlined has moved to Github. We’ve already moved all of our other open source here at Relevance to our Github account, so it was long overdue to move Streamlined. The old SVN repo will be phased out and deleted within three weeks, so please plan accordingly.

Github has got be one of the best things to happen to open source and Git in the last year. It takes code collaboration to a new level of sexiness. Please do send pull requests with Streamlined patches and feature ideas, and someone on the Streamlined team will take a look.

We’ll be treating the master branch as the ‘stable’ area, and we will fire up new branches for long-term experimental work. So if you want to use git submodules to track Streamlined, feel free to point them at the master branch. You can also use the new script/plugin support from within Rails 2.1+ to install directly from Github:

script/plugin install git://github.com/relevance/streamlined.git
[news ]
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I finally succumbed

• http://twitter.com/tablatom

I’ll pretty much only be using this to let anyone that’s interested know what I’m up to with Hobo at a given time. Don’t expect to see “brushing my teeth” or anything like that : )

This is going to be pretty much write-only, too. I’m not good with distractions. So apologies in advance if I don’t respond to your responses.

[General ]
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It’s a funny thing that when someone offers to pay you to work on something, they tend to want to know what you’re up to. I did tell Owen over at Barquin that I could get the whole thing wrapped up from a beach in St. Tropez and that I’d be back in three or four months, but I could sense that the idea didn’t go down too well.

So we need a bit more visibility, we need it to be clear where we’re going and what we need to do to get there. Of course we need this anyway, to make it easier for folk to contribute to the project. We need to blow the cobwebs off our trusty Hobo Lighthouse.

Tis done! head over there and see how neat and tidy it all is : ) And if you think you’ll be keeping an eye on the tickets, and maybe even filing your own now and then, be sure to read the home page which explains how we’re organising the tickets.

The idea is that we’ll track pretty much everything as tickets, not just bugs and feature-requests, but bigger to-do items such as testing tasks and documentation that needs to be written. I’m not sure everything like that is in there right now, but most of it is.

In other news, we’re long overdue a release. This one is going to be 0.8 because it’s got some cool new features. I was hoping to get it released this week but that looks a bit doubtful now. I see that I’ve got 28 open tickets so I better get cracking!

[General ]
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I’ve been thinking back to the months leading up to ActiveScaffold 1.0 and about how much the project really owes to those generous sponsors who encouraged a few devs to contribute to the open source community. That was great!

Could it happen again? I think so! We still maintain ActiveScaffold as we have time (props go to Tim for the push to support Rails 2.1), but I think the project could really benefit from another sprint of activity. There are a few things that would help the project to remain stable and would ease community contributions, such as versioned documentation (rdocs!) and a full test suite. But that’s my bias—what do you think it needs next?

If you like the idea of an ActiveScaffold code sprint and would consider being a sponsor (large or small!) would you please fill out a quick survey?

Thanks!

[Blog ]
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Oops I did it again. Stopped blogging that is. Hands up who thought this blog had died?

Of course those who wanted to know if the Hobo project itself was still active, if they knew where to look, would have headed over here and would have found things to be very much alive. That’s all very well but I really must start blogging more!

OK where were we? About the time of the last post I was just about to head off to Railsconf with some very interesting news. As often happens in life, and even more often with anything related to software development, things didn’t quite pan out the way we expected. I do have news though, oh yes, even better news than I had before in fact.

At Railsconf we announced our plan to form the Hobo Foundation, a non-profit organisation to act as a conduit for companies that want to help Hobo succeed, and a way for developers to put some serious time into the project while still paying the rent. The driving force behind the idea was a company over in Washington D.C., Barquin International, who were to be the initial sponsor. The more we talked to Barquin, the more apparent it became that these guys really wanted to take Hobo seriously. They’re using Hobo in some very critical projects, the first of which rolls-out next month. To cut a long story short, we’ve arrived at a perfect solution which gets Hobo very much on track, and gives Barquin a close link with the on-going development: they’ve contracted me to work on Hobo full-time! The Hobo Foundation lives on in spirit, but for now this is by far the best arrangement for everyone.

That’s right folks, progress is about to take a big leap forwards. You know what this means don’t you? It means all those warm and fuzzy things like a solid test suite, lots of documentation, continuing to separate out all the major sub-components like DRYML into their own projects. Good things are coming!

I want to say a big thank-you to the folk at Barquin for supporting open-source and creating this great opportunity for the Hobo project. Barquin does a lot of work for the US Federal Government, and to be honest, this is the very last place I would have looked for a company willing to stick their neck out for some exciting new technology. It turns out Barquin are not your average government contractor. They’re firm believers in client-centred agile practices, and that approach recently won them (shameless sponsor plug!) the “Small Business Contractor of the Year Award” from the US Department of Agriculture.

Here’s looking forward to really getting stuck in and making Hobo as good as it can be. Maybe I’ll even find time to blog more :-)

(p.s. In fact I’ve got a whole load more to tell everyone about, so do expect more posts over the next few days.)

[General ]
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I recently updated the ActiveScaffold sortable plugin and resolved a handful of issues. While I was at it, I decided to create a screencast to show off ActiveScaffold and how easy it is to setup.

<embed src="http://www.jumpcut.com/media/flash/jump.swf?id=37B7EC2A246A11DDA3B8000423CEF5F6&#38;asset_type=movie&#38;asset_id=37B7EC2A246A11DDA3B8000423CEF5F6&#38;eb=1" height="400" width="500"></embed> Clarification

The video shows my old github copies of the repositories. The urls to get the repositories are as follows:

ActiveScaffold

ActiveScaffold Sortable

[Blog ]
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With so much fun happening in git land, ActiveScaffold has officially cut it’s ties from Subversion and moved completely over to Git. All git related repositories can be found at the following URL:

http://github.com/activescaffold

Why?

The advantages of using Git are too numerous to identify in a short article, but among them are the following:

- Contributing will be easier for all: you can create your own fork of ActiveScaffold to add a feature or fix a bug. Then submitting your patch is as easy as sending a pull request.

- You don’t have to wait for ActiveScaffold core to accept your changes before updating to a newer version. With git, you can pull updates from core and merge them in with your changes.

- Git is super, super fast. I mean REALLY FAST. It’s incredibly space / bandwidth efficent, too.

- Branching is painless in git. Merging your branches is also painless.

- The concept of a “core team” is diluted. ActiveScaffold core doesn’t have to agree with your awesome save-the-world do-everything feature. Just fork and then build it. If it rocks, other people can use your version.

So Come Hop On!

So, if you haven’t already, come join us on the git bandwagon. There are plenty of easy ways to install git now – packages exist for OS X, Windows, and many distros of Linux.

Yeehaa!

[Blog ]
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The interaction between ActiveRecord and the database is very simple when working with a single record - it’s always pretty clear when the database is going to be changed. What about when you’re working with multiple records and associations? I did some experiments way back at the start of the Hobo project, but recently I wanted to check if anything had changed.

So I threw together some simple experiments, and turned on logging in the console. It’s a bit rough and certainly not exhaustive, but I formatted it in markdown out of habit and then though hey, I should post this, so here it is.

Is this stuff documented somewhere? I never found it if it is. I wonder if most Rails devs know about all this already.

This is all in Rail 2.0.2 BTW.

Some simple models class Post < ActiveRecord::Base has_many :comments has_many :categorisations has_many :categories, :through => :categorisations end class Comment < ActiveRecord::Base belongs_to :post end class Category < ActiveRecord::Base has_many :categorisations end class Categorisation < ActiveRecord::Base belongs_to :post belongs_to :category end has_many (not through) Assigning to the array on a new record

New comments are created along with a new post:

>> p = Post.new => #<Post id: nil> >> p.comments = [Comment.new] => [#<Comment id: nil, post_id: nil>] >> p.save Post Create (0.000601) INSERT INTO posts VALUES(NULL) Comment Create (0.000195) INSERT INTO comments ("post_id") VALUES(1) => true Appending to the array

For a post that exists, the appended comments are created immediately:

>> p => #<Post id: 1> >> p.comments << Comment.new Comment Create (0.000481) INSERT INTO comments ("post_id") VALUES(1) => [#<Comment id: 1, post_id: 1>, #<Comment id: 2, post_id: 1>] Assigning to the array on an existing record

Comments no longer in the array have their foreign_key set to NULL. (I’d guess this changes if you declare :dependent => :destroy, but I didn’t try it)

>> p.comments => [#<Comment id: 1, post_id: 1>, #<Comment id: 2, post_id: 1>] >> p.comments = [] Comment Update (0.001335) UPDATE comments SET post_id = NULL WHERE (post_id = 1 AND id IN (1,2)) => []

New comments in the array are created immediately:

>> p.comments = [Comment.new] Comment Create (0.000504) INSERT INTO comments ("post_id") VALUES(1) => [#<Comment id: 3, post_id: 1>]

Existing comments have their foreign key set

>> p2 = Post.create Post Create (0.000820) INSERT INTO posts VALUES(NULL) => #<Post id: 2> >> c = p.comments.first => #<Comment id: 3, post_id: 1> >> p2.comments = [c] Comment Load (0.000292) SELECT * FROM comments WHERE (comments.post_id = 2) Comment Update (0.000684) UPDATE comments SET "post_id" = 2 WHERE "id" = 3 => [#<Comment id: 3, post_id: 2>] belongs_to

When assigning c.post on an existing comment, the change is saved when the comment is saved:

>> c.post == p2 => true >> c.post = p => #<Post id: 1> >> c.save Comment Update (0.000778) UPDATE comments SET "post_id" = 1 WHERE "id" = 3 => true

When assigning a c.post to a new post, the post is created when the comment is saved:

>> c => #<Comment id: 3, post_id: 1> >> c.post = Post.new => #<Post id: nil> >> c.save Post Create (0.000464) INSERT INTO posts VALUES(NULL) Comment Update (0.000148) UPDATE comments SET "post_id" = 3 WHERE "id" = 3 => true

This happens the same way when the comment is new — both are created together:

>> c = Comment.new => #<Comment id: nil, post_id: nil> >> c.post = Post.new => #<Post id: nil> >> c.save Post Create (0.000499) INSERT INTO posts VALUES(NULL) Comment Create (0.000161) INSERT INTO comments ("post_id") VALUES(4) => true has_many :through Assigning to the array has no effect:

Assignment to p.categories where p is an existing post:

>> p => #<Post id: 1> >> cat = Category.create Category Create (0.000427) INSERT INTO categories VALUES(NULL) => #<Category id: 1> >> p.categories = [cat] Category Load (0.000289) SELECT categories.* FROM categories INNER JOIN categorisations ON categories.id = categorisations.category_id WHERE ((categorisations.post_id = 1)) => [#<Category id: 1>] >> p.save => true

Note there were no changes to the categories table.

Assignment to p.categories where p is a new post:

>> p = Post.new => #<Post id: nil> >> p.categories = [cat] => [#<Category id: 1>] >> p.save Post Create (0.000513) INSERT INTO posts VALUES(NULL) => true

Again, nothing happens to the categories table

Appending to the array does have an effect

Can’t append to a has-many-through on a new record:

>> p = Post.new => #<Post id: nil> >> p.categories << cat ActiveRecord::HasManyThroughCantAssociateNewRecords: Cannot associate new records through 'Post#categorisations' on '#'. Both records must have an id in order to create the has_many :through record associating them.

Can append to a has-many-through on an existing record. The joining record is created immediately:

>> p = Post.find(:first) Post Load (0.000365) SELECT * FROM posts LIMIT 1 => #<Post id: 1> >> p.categories Category Load (0.000294) SELECT categories.* FROM categories INNER JOIN categorisations ON categories.id = categorisations.category_id WHERE ((categorisations.post_id = 1)) => [] >> p.categories << cat Categorisation Create (0.000479) INSERT INTO categorisations ("post_id", "category_id") VALUES(1, 1) => [#<Category id: 1>]

But this is not allowed if the category is new:

>> p.categories << Category.new ActiveRecord::HasManyThroughCantAssociateNewRecords: Cannot associate new records through 'Post#categorisations' on '#'. Both records must have an id in order to create the has_many :through record associating them.

Did you learn something?

[Ruby Skills ]
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Hobo 0.7.5 is a fairly small release in terms of new features, but does tidy up a few things and fixes some bugs that were causing people trouble. The bigger news is that there’s a whole bunch of new documentation now available.

To upgrade simply

gem update hobo

or grab the files from github or the svn repo and update your plugin directories.

A highlight of some of the changes.

• Autocompleters and in-place-editors have been broken for a while. They’re working again now
• Some incompatibilities with older REXML versions have been addressed. DRYML should now work with REXML versions 3.1.4 to 3.1.7.3
• The “permission denied” page should be working again.
• The Clean theme works much better in IE6 now.
• We’ve squished a pagination bug that was messing a few people up

There’s a bunch more little changes — see the changelog for the full low-down.

Then on the tidying up side, there are two major changes. First, we’ve moved to gems for the whole of hobo. Installing the hobo gem should get you hobosupport, hobofields and will_paginate. As a result of this the hobo command no longer tries to fetch anything with subversion.

And we’ve made a change to the structure of the git repo. Because Hobo is really one project, with some sub-components available as spin-offs, it is really much better to have the whole thing in a single repo. So github.com/tablatom/hobo now also contains hobosupport and hobofields in sub-directories. The separate repos on github for HoboSupport and HoboFields will be deleted soon. The one downside is that you can no longer follow “edge Hobo” by using git sub-modules, because git doesn’t support partial exports. We’ll provide some rake tasks to make that easier at some point.

And then there’s the docs.

We’ve got the very beginnings of a complete reference to the Rapid tag libraries. At the moment it’s just generated from the source-code but all we need to do now is start adding in-line documentation comments. The format is probably not ideal either - it doesn’t lend itself to easily searching the whole library. We’ll improve that too in time.

The manual has been extended to include a fairly comprehensive guide to customising Hobo’s RESTful model controller.

James has added some great insights into working with DRYML in the third part of the POD tutorial and with some additions to the DRYML guide.

And finally there’s our first HOW-TO: adding an admin sub-site to a Hobo app. We’ve got a bunch more of these planned which should be very useful.

So! We’re making good on our promise to concentrate less on features and more on making Hobo accessible to others. Mind you, having said that, there’s a cracking new feature in the pipeline…

[Releases ]
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While chatting in the hobo IRC channel yesterday, I realised that I should probably do a blog post on the state of the documentation. We’re far from done here. I don’t want anyone to get the false impression that you’re expected to figure out how to use Hobo from the tutorials and guides that we’ve posted already.

If you wanted to use Hobo not so long ago, pretty much your only option was reading the source and asking questions. If you want to use Hobo now, you’ve got some reasonable docs to get you going, but you’ll still need to read some source (especially the DRYML libraries in vendor/plugins/hobo/taglibs). Eventually, you’ll be able to get by on the docs alone and everyone will be happy :-)

There’s all sorts of details that we haven’t documented at all, but there’s two really big gaps: customising your controllers and the Rapid tag library. What I really wanted to talk about in this post is Rapid.

Rapid, in my opinion, is the best part of Hobo. You could say (and in fact I think I did somewhere or other) that everything else in Hobo exists to make Rapid possible. The combination of development speed and flexibility that Rapid brings is something I can’t say I’ve seen anywhere else.

But there’s a catch. You have to know it. And there’s a lot to know: layers and layers of tags calling tags calling tags. If you know your way around it from top to bottom, you’re singing. If you don’t, you’re probably writing way more view code than you need to.

You should get a good sense of this from the Agility tutorial. Towards the end you’re asked to code up bits and pieces of DRYML. These snippets seem to add functionality that far outweighs their size, but you must be thinking “how was I supposed to know that?!”

Some folk seem perfectly happy to read the DRYML taglibs and find their way around that way, but we really, really need docs for this stuff.

This is not meant as an apology, and it’s not going to be a promise to deliver X by Y. It’s just to let you know that those docs are very much on the to do list (and near the top), and please don’t think that you’re expected to just know what to do.

An idea that came out of that IRC chat was to create a tutorial that starts with a full app, in “normal Rails” style, and goes through how to gradually Hoboize it. In the view layer we could explain how to factor out all the HTML into layers of DRYML tags. That would not only show how to use bits and pieces from Rapid, but would also illustrate why Rapid is like it is. It would throw a lot of light on the whole of Hobo in fact. Could be a lot of work though, so don’t hold your breath until it’s ready :-)

p.s. On the subject of docs I just noticed that the HoboSupport docs are messed up — there’s a whole bunch of pages that aren’t linked to. like this one for example. Will fix!

[General ]
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This is the first post in a new category I’ve added to the blog: “Ruby Skills”. It’s a place for me to share Ruby tricks and tips I’ve picked up along the way. Sometimes, as with this post, I’ll post about the Ruby extensions in HoboSupport. Now that HoboSupport is available as a gem, you can easily use these tricks in any Ruby project.

First up, two new Enumerable methods that HoboSupport adds: * and where. Attentive readers might be thinking — hang on, Array already defined *. Don’t worry, it still works.

* is some syntactic sugar for map. The idea is that we use ‘dot’ to call a method on one object, and we use ‘dot star’ to call a method on a whole collection of objects, returning all the results in a new array.

Say users is an array of user objects, and we want all the names:

users.*.name

Nice eh? You can pass arguments too:

users.*.to_json(:only => [:first_name, :surname])

Note that you can’t do

users.*.name.upcase

That would try to upcase the array. You’d have to do:

users.*.name.*.upcase # Not very efficient though

Of course, as a good functional programmer, I wouldn’t dream of giving map some love while neglecting filter (better known in Ruby-land as find_all or select). So you can also do:

users.where.active? # same as users.find_all {|u| u.active? }

There’s also where_not

Given that the result is just an array, we can chain them. Want the names of all the inactive users?

users.where_not.active?.*.name

Very handy in the console.

[Ruby Skills ]
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And finally… Here it is. The site has been restructured with a new front page that does a much better job of communicating what we’re all about. And there’s much more besides…

Hobo 0.7.4 is out. Please see the changes. Note that rubyforge seems to be having a very bad day. Downloading the gem files directy from http://rubyforge.org/projects/hobo seems like a good option. You’ll need both hobo and hobosupport.

There are two, count them, two tutorials on the docs page, as well as guides to the basics of DRYML and the Hobo generators.

The big breakup has begun. The HoboSupport gem, and HoboFields plugin (with the migration-generator) are now available without the rest Hobo. Let the whole world be freed from the drudgery of writing migrations! As you’ll see, HoboSupport and HoboFields are tested and well documented. We’ve achieved both in one go using Python-style DocTests. More on those in a later post.

The source code now lives on GitHub at http://github.com/tablatom. This is a really fantastic step forward giving us:

• A super easy way for people to contribute code
• A nice online browser for both the source code and commit trail
• RSS feeds for commits
• And even a wiki

And of course, if you do the GitHub thing, you’ve got to do the Lighthouse thing too. Lighthouse is now the new Hobo issue tracker.

BUT. More importantly than all that. This all marks the start of a new chapter in the life of Hobo. The documentation that’s available now is just the start. We’re now moving on to extracting DRYML as a separate plugin, which also means doctests for every last DRYML feature. Then it’ll be on to docs for the Rapid tag library.

The one thing that’s missing right now is screencasts. The old ones are still online but they’re so out of date that we’re not linking to them any more. A new series of screencasts based around the Agility tutorial will be created soon.

We will continue to add new features and functionality, and we will sill make breaking changes right up until 1.0, but the focus now is on stability, tests and documentation. Oh, and building a community of contributors. That means you!

[General ]
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Streamlined 1.0 RC3 has been released. This release brings with it a number of bug fixes over RC1, including:

• Editing of one-dimensional enumerations from the list view is now supported
• Relationship editing no longer complains about missing authenticity tokens
• HTML escaping has been enhanced

There are lots of other small fixes in this release as well. To grab it, run:

script/plugin install http://svn.streamlinedframework.org/branches/stable/streamlined

The change log has a full list of udates. Please submit any defects you might stumble across on Trac. As always, the mailing list is a good source for information if you have other questions.

[releases ]
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So here I am at the Ruby Fools conference in Copenhagen, and I did say we were going to try and have some new stuff ready by now. We’re nearly there. Stay tuned over the next few days.

First off though, I better deflate your expectations a bit. I don’t know if this was my fault for wording the last blog post badly, but a few people seem to have gained some pretty wild expectations about what’s coming. Terms like “fully documented” and even (gasp) “version 1.0″ have been bouncing around. Sorry folks, there’s good stuff coming but I never meant to give you that idea. Apologies for any confusion.

What is coming is this — we are turning the corner and focussing our energy on making Hobo into something everyone can use. That means breaking it up into parts, and writing more documentation and tests. The process has begun, and the first installment is on the way. Here’s what we’re about to put out. (If you know where to look you’ll know that some of these things are in fact available already. We’re just holding off from the ‘official’ release so we can promote the new stuff properly in a few places).

• Hobo 0.7.4
• HoboSupport as a separate gem (core Ruby extensions). With full docs!
• HoboFields plugin. This is something a lot of people have asked for — the migration generator as a separate plugin. HoboFields will be well documented too :-)
• Significant improvements to the current Hobo tutorial (the POD classified ads application)
• An entirely new tutorial — this is the one I delivered today at the conference. It goes through the full development of an app for tracking an agile development process (sort of a mini Mingle). Runs to 13 pages when printed.
• A DRYML guide covering all of the basic facilities that DRYML provides.
• A revamped hobocentral.net
• Very nice online access to the source-code and commit log (from a service you may have heard of)
• A very nice ticketing system that won’t drown in spam like the last one (also from a service you may know)
• Possibly some other stuff I’ve forgotten because this is all off the top of my head and it’s kinda late.

So it’s not 1.0 and it’s not fully documented but I hope it’s enough to demonstrate that we’re serious about moving Hobo in the right direction now. And like I said, it’s nearly ready. Watch this space.

[General ]
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Posted by ingemar (removing spam) (87.193.165.87) Globalize for Rails 1.2 released!

The Globalize’s developer team is happy to annouce the official release of Globalize for Rails 1.2

Besides being compatible with the latest shiny & jaw-dropping Ruby on Rails 1.2 release this Globalize release adds two new major features:

• alternative way of storing ModelTranslations in the model table
• namespaced ViewTranslations

For a smooth upgrade please note that a minor change to the database schema is required.

NOTE: If you install the plugin via script/plugin install, then your schema will be automatically updated (default rails environment).

You can also accomplish this by running the included Rake task:

rake globalize:upgrade_schema_to_1_dot_2

(This in fact doesn’t do anything more than add a string column ‘namespace’ to the table globalize_translations, so you could do that manually, too.)

Posted on 01 Mar 2007 · more news …

Overview for busy people Globalize implements three basic types of translation:

1. Dates, currencies, etc: language dependent, but also (often) country/locale dependent. This feature provides convenient methods for relevant data types. 12345.67.localize → 12.345,67
2. Content in the database, for specific fields in specific tables: once the translates method is added to the relevant model, the fields indicated with that method call gain the ability to have translated content sitting in the database. An operator (possibly the developer) will need to add these translated texts.
3. Arbitrary strings: any string that you would like, with added flexiblity for including parameters (for example: ‘one’ in the singular form of a phrase and an actual number for the plural form)

Using these three mechanisms, all user-facing content ought to be translatable.

For a quick overview of Globalize usage see: How to use. For more walkthroughs, articles and howtos see: Documentation

Screencast(s)

We’d like to publish a screencast here – or better yet, a short screencast for each of several aspects of using Globalize.

Please contact us in case you’re volunteering for this.

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The JaxDoc version of the Streamlined RDoc is now available at http://streamlinedframework.org/rdoc/index.html.

[news ]
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A few of us will be at

If there is interest in linking up let’s discuss in the forum.

[Blog ]
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We are happy to announce the release of Streamlined 1.0 RC1. This release brings Rails 2 compatibility, better association support, and many small fixes and miscellaneous API cleanup.

To grab the latest stable release, you can install with:

script/plugin install http://svn.streamlinedframework.org/branches/stable/streamlined

You can view the full change log at trac, and please submit issues or defects at trac and not here.

[releases ]
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Posted by Anonymous (82.192.91.7) 1. Introduction

NOTE
If you want the latest API reference for globalize plugin, run rake doc:plugins to generate rdoc documentation. You can find it later in app/doc/plugins/globalize directory.

NOTE
You need to apply some changes below to make it work with Oracle.

2. Creating rails application

Firstly create a very simple rails app (just one table) to work with.
rails globalize
This should create a skeleton of your application.

Now you need to create a database to work with, i.e. “globalize_development” and configure config/database.yml file correctly.

Next create the only model:
script/generate model Product
This will create also a migrate file db/migrate/001_create_products.rb, which you can use to create products table.
class CreateProducts < ActiveRecord::Migration def self.up create_table :products do |t| t.column :name, :string t.column :company, :string t.column :description, :text t.column :price, :integer, :default => 0 t.column :created_on, :date t.column :updated_on, :date end end def self.down drop_table :products end end
Run
rake migrate
and if there were no errors you should have new products table in your database.

Now you can add some functionality to your app:
script/generate scaffold admin/product script/generate controller product
The first line will generate the whole admin panel for your products table and the second one will add a controller, which will be used by “user” part of the app.

Now it’s time for some cosmetic changes:

• remove created_on and updated_on input elements from app/views/admin/products/_form.rhtml partial – you don’t need them as they these fields are updated automatically
• copy index, list and show actions from app/controllers/admin/products_controller.rb to app/controllers/product_controller.rb
• copy list.rhtml and show.rhtml files from app/views/admin/products/ to app/views/product/
• remove edit, destroy and new functionality from list.rhtml and show.rhtml files you’ve just copied
• delete or rename public/index.html
• add layouts for admin and user parts

Next add routing rules for user and admin parts. Add these 2 lines to your config/routes.rb file:
# You can have the root of your site routed by hooking up '' # -- just remember to delete public/index.html. map.connect '', :controller => 'product', :action => 'index' map.connect 'admin', :controller => 'admin/products', :action => 'index'

Now you’ve got your own basic rails app with full CRUD functionality for admin and read functionality for user.

3. Installing globalize plugin

To install the plugin just type:
script/plugin install svn://svn.globalize-rails.org/globalize/branches/for-1.1

Now go to vendor/plugins and rename for-1.1 directory to globalize.

Now run:
rake globalize:setup
and you’ve just finished installing globalize!

NOTE
You can run rake -T to see all available rake tasks – including these added by globalize.

WARNING
In current revision (197) there’s a problem with built_in column in globalize_translation table, which causes all translations added by the user to be marked as built in.
I’m not sure if it’s just problem with my configuration, but to check if you also have this problem, type this in the console:
include Globalize Locale.set "en-US" Locale.set_translation("foo", "bar") ViewTranslation.find(:first, :conditions => "tr_key = 'foo'").built_in?
If you get false, then your translation is not being set as built-in and everything is ok.
If not, close the console and open the file vendor/plugins/globalize/tasks/data.rake and change line #63:
t.column :built_in, :boolean, :default => true
to
t.column :built_in, :boolean#, :default => true
Now run
rake globalize:teardown rake globalize:setup
Open the console and set all fields in globalize_translation table as built_in
include Globalize ViewTranslation.update_all(["built_in = ?", true])
Now it should work correctly: all translations that already exist in the table should be marked as built-in and all new translations added by you won’t be anymore.
Note that due to the unorthodox way Globalize handles the database (without migrations), this change won’t be reflected in schema.rb.

4. Making your application globalized 4.1 Configuration

First you need to set the base language. Add these lines to config/environment.rb file:
# Include your application configuration below include Globalize Locale.set_base_language 'en-US' LOCALES = {'pl' => 'pl-PL', 'en' => 'en-US', 'es' => 'es-ES', 'fr' => 'fr-FR'}.freeze
Of course you can select any language as your base language. In LOCALES hash we will store all available locales for this app. Remember to restart the server after you made changes in environment.rb file.

NOTE
It’s important to never change the base language once you’ve started populating the database.

You can pass the information about the language, which should be displayed, in the session variable or in the url. Here just the second method is presented, as it allows you i.e. to bookmark the page in selected language etc.

Now you need to modify your config/routes.rb file a bit. Add this line before the lines you added before:
map.connect ':locale/:controller/:action/:id'

You also need to set the current language somewhere. Edit your app/controllers/application.rb file:
class ApplicationController < ActionController::Base before_filter :set_locale def set_locale if !params[:locale].nil? && LOCALES.keys.include?(params[:locale]) Locale.set LOCALES[params[:locale]] else redirect_to params.merge( 'locale' => Locale.base_language.code ) end end end

Try to display your main page again – you should see “en” in the url before the controller name.

Now just add possibility to switch between languages and move to the next chapter.

To switch between languages you can use i.e. following link:
<%= link_to "pl", {:controller => controller.controller_name, :action => controller.action_name, :locale => 'pl', :id => params[:id]} %>
This will display current page in selected language, but it will only work with the default route.

NOTE
You could iterate through LOCALE hash to create a link for every supported language or create select input field.

NOTE by Marc-André Lafortune
I prefer to use the preferences set in the user’s client to determine the default locale. The user can then decide to override it by clicking on a button you provide, in which case I want to store that in a cookie so that preference is remembered forever. Here’s my filter:
# Will set the cookie 'locale' if (and only if) an explicit parameter 'locale' # is passed (and is acceptable) # If no cookie exists, we look through the list of desired languages for the # first one we can accept. # def set_locale accept_locales = LOCALES.keys # change this line as needed, must be an array of strings cookies[:locale] = params[:locale] if accept_locales.include?(params[:locale]) Locale.set(cookies[:locale] || (request.env["HTTP_ACCEPT_LANGUAGE"] || "").scan(/[^,;]+/).find{|l| accept_locales.include?(l)}) end

4.2 Translating static content.

First you need to generate translate controller.
script/generate controller admin/translate
Now edit your new controller:
class Admin::TranslateController < ApplicationController def index @view_translations = ViewTranslation.find(:all, :conditions => [ 'built_in IS NULL AND language_id = ?', Locale.language.id ], :order => 'text') end def translation_text @translation = ViewTranslation.find(params[:id]) render :text => @translation.text || "" end def set_translation_text @translation = ViewTranslation.find(params[:id]) previous = @translation.text @translation.text = params[:value] @translation.text = previous unless @translation.save render :partial => "translation_text", :object => @translation.text end end
Let’s focus on the index action. We fetch all non-built-in translations for current locale and order them by text column. This will put all untranslated fields at the beginning of @view_translation array.
You can change the conditions i.e.:
def index @view_translations = ViewTranslation.find(:all, :conditions => [ 'text IS NULL AND language_id = ?', Locale.language.id ], :order => 'tr_key') end
This way you’ll get untranslated fields only.
Remember to set admin layout for this controller.

Now create app/views/admin/translate/_translation_text.rhtml partial, which is used in translation_text action.
<%= translation_text || '[no translation]' %>
To translate the static content you can use in_place_editor helper, which is built-in in Rails 1.1. Just remember to add
<%= javascript_include_tag :defaults %>
in the layout file for the admin part (e.g. create an application-wide app/views/layouts/application.rhtml layout – you can copy most of the generated products.rhtml layout there, just change the title and add the javascript tag).

Next create app/views/admin/translate/_translation_form.rhtml partial for the form, which will be used to provide translations.
<!--[form:translate]--> <p> <label for="tr_<%= tr.id %>"><%=tr.tr_key%></label> <br /> <span id="tr_<%= tr.id %>"> <%= render :partial => 'translation_text', :object => tr.text %> </span> <%= in_place_editor "tr_#{tr.id}", :url => { :action => :set_translation_text, :id => tr.id }, :load_text_url => url_for({ :action => :translation_text, :id => tr.id })%> </p> <!--[eoform:translate]-->

NOTE
If you want more information about in_place_editor helper look here.

In the next step we will use 2 useful helpers. Add the following code to app/helpers/application_helper.rb file:
def base_language_only yield if Locale.base? end def not_base_language yield unless Locale.base? end

NOTE
These helpers come from Jeremy Voorhis’ Canada on Rails slides, which you can find here.

Still in app/views/admin/translate, create index.rhtml and edit it:
<% base_language_only do -%> <div id="language"><h1>Please choose language for translation</h1></div> <% end -%> <% not_base_language do -%> <div id="language"><h1><%= "Language: " + Locale.language.native_name %></h1></div> <div> <% @view_translations.each do |tr| -%> <%= render :partial => 'translation_form', :locals => {:tr => tr}%> <% end -%> </div> <% end -%>

We don’t want to translate english strings to english again, so the translation forms will only be displayed if current language is different than the base one.

Add a new product if you haven’t done this already – go to localhost:3000/admin/, press ‘New product’ and fill out the form.

Open app/views/product/list.rhtml and show.rhtml and add .t method to all strings you want to translate i.e. change 'Show' to 'Show'.t etc. This way you’ll get translated user part of the application.

To add these strings to the database they must be displayed first, so go to localhost:3000/pl/product. Next go to localhost:3000/pl/admin/translate. You should see the list of strings to which you’ve added .t method. Translate them and go to localhost:3000/pl/product again.

NOTE
If you don’t get any strings on localhost:3000/pl/admin/translate page to translate, make sure that:

• you’re not displaying that page with the base locale
• you added .t method to the strings
• you displayed pages, to which you added .t method

NOTE
Here’s useful thread showing how to add untranslated strings automatically: http://rubyforge.org/pipermail/railsi18n-discussion/2006-August/000124.html

4.3 Translating model data.

First you need to decide which fields you want to translate. In our Product model we’ll translate name and description fields.

Add this line to app/models/product.rb:
translates :name, :description

We will allow adding new products only for the base language. Modify app/views/admin/products/list.rhtml file:
<% base_language_only do -%> <%= link_to 'New product', :action => 'new' %> <% end -%>

In the same directory create new file _translation_form.rhtml. Copy contents of _form.rhtml partial to this new file, but remove company and price input fields as they won’t be translated. As you may have already figured out this form will be used to provide translations for the Product model.

Now create another file _translation_data.rhtml and put the following code inside:
<div> <b>Name:</b> <%=h @product.name %> <b>Description:</b> <%=h @product.description %> </div>
This file will be used as the reference and will show data in the base language.

Now it’s time to modify edit.rhtml file.
<h1>Editing product</h1> <% base_language_only do -%> <%= start_form_tag :action => 'update', :id => @product %> <%= render :partial => 'form' %> <%= submit_tag 'Edit' %> <%= end_form_tag %> <% end -%> <% not_base_language do -%> <div style="float:left;"> <h2><%= Locale.language.native_name%></h2> <%= start_form_tag( {:action => 'update', :id => @product} ) %> <%= render :partial => 'translation_form' %> <%= submit_tag 'save translation' %> <%= end_form_tag %> </div> <div style="float:right;"> <% @product.switch_language(Locale.base_language.code) do -%> <h2><%= Locale.base_language.native_name%></h2> <%= render :partial => 'translation_data' %> <% end -%> </div> <% end -%> <%= link_to 'Show', :action => 'show', :id => @product %> | <%= link_to 'Back', :action => 'list' %>
Navigate to localhost:3000/pl/admin/products, find the product you added, and click on Edit.
If the current language is the base one, the full version of the edit form is displayed. If not, the translation form is displayed on the left and the original data on the right, as the reference for the translator.

NOTE
.switch_language method used in this code is provided by globalize_extension plugin written by Olivier Amblet from Liquid Concept, which can be found here. It provides many other useful extensions for globalize plugin. Just install it into your vendor/plugins directory. If you use Globalize for Rails 1.2 you need to patch the globalize_extension plugin as suggests its #91 ticket: edit globalize_extension/lib/globalize/db_translate_ex.rb file, and at line 44 replace ‘fix_conditions’ with ‘sanitize_sql’, then save. Too bad they didn’t include this code into repository yet.

NOTE
If you’re going to translate many models it would probably be good idea to put the code above into a partial and just pass an object to translate:
render :partial "translation_page", :locals => {:object => @product}

To inform user that the text hasn’t been yet translated you can use the following helper (also from Jeremy Voorhis’ slides mentioned above):
def translation_availability_for object_name, facet, message = nil not_base_language do message ||= content_tag 'p', '(Translation not available)'.t object = instance_variable_get "@#{object_name}" message if object && !object.send( facet ).blank? && object.send( "#{facet}_is_base?" ) end end
Here’s the example of its usage:
<%= translation_availability_for :product, :description %> <%=h @product.description %>

4.4 Translating dates

To translate dates you can use localize method or its shorter form loc. It takes format string as the paramater, exactly the same as strftime method.
I.e.
Product.find(:first).created_on.loc("%A %d-%B-%Y")
should give “Wednesday 14-June-2006” for English language and “Środa 14-Czerwiec-2006” for Polish.

countries table has field date_format, which you can use to specify custom format for different languages. Example for Polish language:
country = Country.find(:first, :conditions => "code = 'PL'") country.update_attribute(:date_format, "%d/%m/%y")
Globalize uses cache to minimize database usage, so sometimes you need to clear it to make changes visible:
Locale.clear_cache Locale.set "pl-PL" Locale.country.date_format
Now you can just use
product.created_on.loc(Locale.country.date_format)
and you’ll get different date format for every language.

In a template use for example:
@product.send(column.name).localize("%d %B %Y") if column.name.to_s == 'created_on'

4.5 Translating error messages

Globalize provides modified version of error_messages_for helper. Unfortunatelly it doesn’t have translated error messages in the database yet. But you can easily add them by yourself. Here’s how to do it.

—-
I couldn’t find any way to do it on this page, so I came up with my own solution, using the rails console script. Fairly simple:
Locale.set 'pl-PL' # you might want to iterate throught LOCALES.each_value here ActiveRecord::Errors.default_error_messages.each_value do |error_msg| error_msg.translate end

Benol

and if your base language isn’t English?
—-

4.6 Translating currency

WARNING
Current implementation of Currency class has some bugs. They should be fixed in the next revision.

Globalize provides specialized class to represent money in ActiveRecord models – Globalize::Currency.
To use it you need to modify app/models/product.rb file. Add the following line:
composed_of :price, :class_name => "Globalize::Currency", :mapping => [ %w(price cents) ]
Now product.price will return Globalize:Currency object. To display the actual value you’ve got 2 possibilities:

• .to_s method
• .format method, which can take optional parameters: if :code => true is specified, format using international 3-letter currency code; if :country is specified as well, use that country’s currency code for formatting

Text by: szymek (83.15.148.82)

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