Question

I’m trying to get some json from an action but I have a problem.

I know that you can return “format.js” and return an “.js.erb” file but… Imagine I have an action that return some stuff and I want to work with that in two different ways. I cannot have that two different ways on the same .js.erb because when I return it, both ways will be executed, right? I mean, when I return that file, that file will be processed entirely.

So I tried to use the jQuery way.

I have:

# GET /posts/slug/hidden_content.json
def hidden_content
  @post = Post.find(params[:id])
  @post = hidden_post_part(@post.body)

  respond_to do |format|
    format.json { render json: @post, :status => :ok}
  end
end

And in the controller.coffee:

$ ->
  # Render hidden part of post
  $(".showallpost img").click( ->
    post_url = $(this).next().attr("href").split("/").pop();
    $.ajax
      url: Routes.hidden_content_path(post_url),
      type: "GET",
      contentType: "application/json",
      success: (data) ->
        console.log "foo"
  );

The GET works perfectly and it returns what I need but the success function is never called, I don’t see the “foo” log.

I guess that the action should return something to tell to the caller that the GET was successful. (I tried with :status without luck).

So I can’t work with my GET data.

Ideas?

Answer 1

Seems like my controller was returning plain html instead of json, so when I used

dataType: 'json'

I needed to use:

dataType: 'html'

Kinda weird, because it should return some json, but well, it works.

All the thanks to Mike Johnson in: jquery doesn't call success method on $.ajax for rails standard REST DELETE answer