javascript - Rails + simple_form + remote_true + custom controller: how to handle different form actions for 'new' and 'edit'? -

i'm following tutorial: http://www.gotealeaf.com/blog/the-detailed-guide-on-how-ajax-works-with-ruby-on-rails variation: after creating scaffold 'tasks' (controller, model, views...) i've created new controller, named 'demo', test ajax way. 'demo' controller has following actions: index, new_task, create_task, edit_task, update_task. routes adjusted.

when render form (app/views/demo/_form.html.erb)

<%= simple_form_for @task, remote: true |f|   %>   <%= f.input  :description                      %>   <%= f.input  :deadline                         %>   <%= f.button :submit                           %> <% end %> 

the form 'action' '/tasks', corresponds 'controller:tasks, action:create', controller "old html" way, while ajax stuff in 'demo' controller.

so, following answers found on web i've added 'url' parameter:

<%= simple_form_for @task, remote: true, url: '/demo/create_task' |f|   %>   <%= f.input  :description                      %>   <%= f.input  :deadline                         %>   <%= f.button :submit                           %> <% end %> 

in case works 'new/create' actions. when it's time update model should use '/demo/update_task' path. rails way handle this?

1. add line before form: <% url = @task.new_record? ? "/demo/create_task" : "/demo/update_task?id=#{@task.id}" %>

2. have 2 different forms, 1 creating, other editing, 'new_task.js.erb' point '_form_for_creating.html.erb' , 'edit_task.js.erb' point other one. not dry actually.

3. even more ugly:: have 'tasks' controller redirect 'update_task' in 'demo' controller. wouldn't rely on because tasks controller supposed deleted after testing.

i chose add line before form:

<% url = @task.new_record? ? "/demo/create_task" : "/demo/update_task?id=#{@task.id}" %> <%= simple_form_for @task, remote: true, url: url |f|   %>   <%= f.input  :description                      %>   <%= f.input  :deadline                         %>   <%= f.button :submit                           %> <% end %> 

i feel it's not perfect works.

of course there few things adjust:

• add route patch 'demo/update_task'
• update_task in demo controller should load tasks after updating attributes