button_to remote update

Question

I am attempting to use the button_to helper to remotely update my database, though i am having a few issues, where it doesnt seem to be passing the params.

within my view i am using

- @availabilities.each do |a|
    =button_to 'Accept', { :controller => 'availabilities', :action => :update, :id => a.id, :available => true }, :confirm => 'Are you sure?', :method => :post, :remote => true

and in the controller

# PUT /availabilities/1


# PUT /availabilities/1.json
  def update
    @availability = Availability.find(params[:id])

    respond_to do |format|
      if @availability.update_attributes(params[:availability])
        format.html { redirect_to @availability, :notice => 'Availability was successfully updated.' }
        format.js
      else
        format.html { render :action => "edit" }
        format.js
      end
    end
  end

console output

    Started POST "/availabilities/2/edit?available=true" for 127.0.0.1 at 2013-02-25 21:43:30 +1100

ActionController::RoutingError (No route matches [POST] "/availabilities/2/edit"):

Answer 1

It looks like you've got the default routes set up which would match a POST to the create action of the controller and reject any POSTed data for an update to an existing object.

In the code for your button, change the method to PUT.

=button_to 'Accept', { :controller => 'availabilities', :action => :update, :id => a.id, :available => true }, :confirm => 'Are you sure?', :method => :put, :remote => true

Example code following comment discussion

In a helper I have the following which is displayed in the view.

def toggle_admin(user)
  if user.is_admin?
    button_to "Yes", toggle_admin_path(user), :id => "toggle_admin_#{user.id}", :class => "btn btn-mini toggle-admin", :remote => true
  else
    button_to "No", toggle_admin_path(user), :id => "toggle_admin_#{user.id}", :class => "btn btn-inverse btn-mini toggle-admin", :remote => true
  end
end

My routes file points the toggle_admin_path to a user settings controller which contains the following:

def toggle_admin
  @user = User.find(params[:id])
  @account = @user.account
  if @user.is_admin? && @account.admins > 1
    @user.remove_role :admin
  else
    @user.roles << :admin
  end
  if request.xhr?
    render :status => 200, :content_type => 'text/javascript'
  else
    redirect_to edit_account_path
  end
 end