Rails%203%20In%20Action

7.7.2 The edit and update actions
Editing users
Add the edit action directly underneath the create action in your controller. It
should be another blank method like the show action:
def edit
end
With this action defined and the @user variable used in its view already set by the
before_filter, you now create the template for this action at app/views/admin/
users/edit.html.erb. This template renders the same form as the new template:
When you run bin/cucumber features/editing_users.feature, you’re told the
update action doesn’t exist:
The action 'update' could not be found for Admin::UsersController
Indeed, it doesn’t, so let’s create it! Add the update action to your Admin::Users-
Controller, as shown in the following listing. You needn’t set up the @user variable
here because the find_user before_filter does it for you.
Listing 7.28 app/controllers/admin/users_controller.rb
def update
if @user.update_attributes(params[:user])
flash[:notice] = "User has been updated."
redirect_to admin_users_path
else
flash[:alert] = "User has not been updated."
render :action => "edit"
end
end
With this action in place, you need to delete the password parameters from
params[:user] if they are blank. Otherwise, the application will attempt to update a
user with a blank password, and Devise won’t allow that. Above update_attributes,
insert this code:
if params[:user][:password].blank?
params[:user].delete(:password)
end
Now the entire action looks like the following listing.
Listing 7.29 app/controllers/admin/users_controller.rb
def update
if params[:user][:password].blank?
params[:user].delete(:password)
params[:user].delete(:password_confirmation)
end
if @user.update_attributes(params[:user])
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