[JSon] Rendering a json view and HTML characters

rubyonrails-talk
1

Hi there fellows !

I'm currently working on a JSon view and had to make my own view (for simple ActiveSupport::JSON can't do the trick anymore).

The thing is, after my controller does this :

respond_to   format.html   format.json end

It does use the correct view in the correct context. Yet, the json view is filtered and the unsupported characters of HTML are modified.

So this is pretty much what I get :

{"created_at":"2011-07-28T15:38:36Z"}

When all I really wanted was :

{"created_at":"2011-07-28T15:38:36Z"}

What's up with that ? How may I prevent this filtering to happen ?

2

Hi there fellows !

I'm currently working on a JSon view and had to make my own view (for simple ActiveSupport::JSON can't do the trick anymore).

The thing is, after my controller does this :

respond_to format.html format.json end

It does use the correct view in the correct context. Yet, the json view is filtered and the unsupported characters of HTML are modified.

So this is pretty much what I get :

{"created_at":"2011-07-28T15:38:36Z"}

You're probably being tripped up by rails's automatic html escaping What's in your view file? It seems unlikely that you need to go down the root you're going down - you can build whatever hash you need and then render it as json with render :json => some_hash.

Fred

3

Well, the matter is quite complicated in fact. And I can't happen to make render :json work for it does not render everything in an object (at least, not something you add via instance_variable_set.

I have an object. This object is joint with another object. The two should be rendered in the same json object, but I figured that would not be possible, so I rendered an array, containing themselves an array with the first and the second object. In some case, some objects have children : I'd like to render the array of children in the same fashion (right after the object it concerns).

I can't think of a way to make that work without using a view.

4

Well, the matter is quite complicated in fact. And I can't happen to make render :json work for it does not render everything in an object (at least, not something you add via instance_variable_set.

I have an object. This object is joint with another object. The two should be rendered in the same json object, but I figured that would not be possible, so I rendered an array, containing themselves an array with the first and the second object. In some case, some objects have children : I'd like to render the array of children in the same fashion (right after the object it concerns).

I can't think of a way to make that work without using a view.

You may not be able to make render :json => my_active_record_object work, but (by definition) any piece of json is just a combination of hashes, arrays, strings, numbers etc. Build up that hash in ruby, call to_json on it and you should be away.

Fred

5

Right, I guess I was kinda tired yesterday.

Though, isn't it cleaner to keep the "interface" stuff in the views ? Even if it's json, it still is nothing but a view to the javascript part.

Also, even if I stopped using the view, if someone was to get the same issue : the solution can be applying raw to the returns of ActiveSupport::JSON.encode !