Proposed functionality in strong parameters to transform an attribute into nested_attributes format

[Austin Story]

Recently i've been working on a javascript frontend/ rails backend project.  

In one view their are several models that are posting to a users controller.  The user is accepting nested attributes for these 3 other models.  

When the params get there, they arrive as things like educations[], trainings[], courses[].  In order to get them to be accepted we put them through a transform that took each one and appended _attributes to the key. So educations => educations_attributes. 

It would be nice if strong parameters had a method.  Something like permit_nested that would do this translation if it didn't exist.  

I am happy to do the work and pr but wanted to get feed back first.  

[Jason King]

This is a user error, the f.fields_for :educations construct (details here) is what you're after for this. It will result in the right `educations_attributes` params arriving at your controller.

[Austin Story]

Hey Jason, that is correct.  But when you are using a frontend framework you don't get access to that and forcing Ember/Rails/[mvc framework] to do it in a rails way is more difficult than just transforming params on server side.  

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[Jason King]

Then I think you should use a before_action in your controller(s). It's really not the place of strong parameters to make adjustments to the parameter names.

[Andrey Novikov]

Hello Austin. We're using the Rails Resource library for AngularJS that does such things for us and happy with it (also it can convert attribute names from ruby's snake_case to js camelCase). Look for similar library for your framework, may be it exists.

среда, 25 марта 2015 г., 20:19:58 UTC+3 пользователь Austin Story написал: