Weeks of April 22 - May 5, 2013
As I expected, Rails 4.0 last week. And so, now the coverage here is of the new master, which is planned to be was released 4.1.
1ec64297 is the actual tag for 4.0 RC1.
eebb9ddf touches a lot of code to convert ActiveModel to 1.9 hash syntax.
…at the method, you hardly have to concern yourself with the rest of the class: everything just makes sense.
strong_parameters will be standard in4.0, but they can be used now in Rails 3.* .
Written by Caleb Thompson
P.S. You can include ActiveModel:: ForbiddenAttributesProtection on a model-by-model basis, but given the level of awesomeness provided I wouldn't recommend it.
Take for instance the to_param and to_partial_path methods from ActiveModel . You can override them in your models to change how your views will interact with them, and that goes in a per model basis, since you usually won't do that for your entire application. Imagine if you need to change a configuration instead overriding a method: You would have to do something weird like this:
# A regular configuration inside an initializer config. action_view . parameterize_method = :slug # But …
Theanswer to such things is ActiveModel , which provides some tools to get you started on building models that aren't based off ::Base . Unfortunately, however, there are a lot of great features, such as validation, that you can't easily get this way.
Enter active_attr , a fantastic gem by , that helps you bootstrap your new non-persisted models and get into the good stuff. Chris's gem provides validation, mass-assignment, and …
It declares a few attributes and some validations. Thanks to ActiveModel you could use anything provided by its validations package in a form object.
By declaring the attributes a form object brings a simple means of implementing mass assignment protection without requiring any sort of sanitization and without poisoning the model with attr_accessible and jumping through hoops in tests to create valid objects to work with.
If an attribute assigned to the form doesn't exist, the assignment …
Aaron 's blog post: Is it Live
Why 4 is a big deal
Ruby on Rails : Strong parameters
Add validation support using ActiveModel includes
Display data validation errors in the form
Use ActiveModel naming conventions for generating form endpoints
Create the routes needed for displaying a web form and posting the data
Restrict resources to the routes you need using only: # config/routes.rb resources :registration, only: [:new, :create]
Controller and Actions
Create a controller with new and create actions.
respond_with will re-render the new action if …
Similar reasoning applies to most of Active Model modules. There is no need to eager load ActiveModel::Validations because if an application is using it, it will load a framework or a model that actually requires it on boot. You will find that this reasoning will probably apply to most modules in your library.
After defining your eager loads, all you need to do is to define a Railtie and include your eager load namespace in it:
module SimpleForm class Railtie < Rails::Railtie config. …