Rails JSON响应未呈现

Question

The controller should show a different page depending on the button pressed using AJAX, via a POST request

# POST /site_device/1
def show_page
     @site_device = SiteDevice.find(params[:id])
     respond_to do |format|
         format.js
         format.json { STDERR.puts "JSON!"; render 'show_page.js.erb'  }
    end
end

The controller code #show page runs, and calls the json view template (below)

<% STDERR.puts "got_here" %>
$('#device-data').html("<h1>Foo!</h1>" ).trigger('create');

We know the above code is being called as the STDERR lines are being output on the server.

On the browser (Chrome) we can use the console to test whether the code in the view template runs correctly – and it does: Entering $('#device-data').html("<h1>Foo!</h1>" ).trigger('create'); into the Google Chrome console results in the html being re-rendered with “Foo!” in the right place.

Here however is the perplexing bit. The code that is being executed on the server doesn't appear to be received at the browser, or if it is, it is not executing, or not rendering

Has anyone else had any similar problems/issues?

Answer 1

To hazard a guess, if your ajax function has dataType: 'JSON' it will receive but not execute the response. If you set dataType: 'script' the response will be executed.

Please post your ajax function if this isn't the answer.