I've been following a tutorial on how Ajax works with Ruby on Rails. However, I decided to take a slightly different approach. After setting up a scaffold for 'tasks' (including the controller, model, and views), I created a new controller called 'demo' to experiment with Ajax functionality. This 'demo' controller includes actions for index, new_task, create_task, edit_task, and update_task. I also had to adjust the routes accordingly.
When attempting to render the form (located at app/views/demo/_form.html.erb), I encountered an issue:
<%= simple_form_for @task, remote: true do |f| %>
<%= f.input :description %>
<%= f.input :deadline %>
<%= f.button :submit %>
<% end %>
The form's 'action' was set to '/tasks', which points to 'controller: tasks, action: create'. However, this controller is designed for traditional HTML handling, not for Ajax requests like in the 'demo' controller.
To address this, I added the 'url' parameter as suggested by some resources:
<%= simple_form_for @task, remote: true, url: '/demo/create_task' do |f| %>
<%= f.input :description %>
<%= f.input :deadline %>
<%= f.button :submit %>
<% end %>
This solution worked well for the 'new' and 'create' actions. However, when it came time to UPDATE a model, I ran into a problem. The correct path should be '/demo/update_task'. How should I handle this in Rails?
One suggestion was to determine the URL before rendering the form based on whether the task is new or if it needs to be updated.
Another option proposed using two separate forms for creating and editing to maintain the DRY principle. However, this approach may not be the most efficient.
An alternative, although deemed "ugly", was redirecting from the 'tasks' controller to the 'update_task' action in the 'demo' controller. This solution was not recommended due to the temporary nature of the 'tasks' controller.