How to allow devise users to edit their profil? - ruby-on-rails

Question

I have a namespace called "backend" which is protected by Devise.
I would like now to allow users to edit their profil.
So I created a users_controller in Backend.
Here's the users_controllercode :
class Backend::UsersController < ApplicationController
layout 'admin'
before_filter :authenticate_user!
def index
#users = Backend::User.all
respond_to do |format|
format.html # index.html.erb
format.json { render json: #users }
end
end
def show
#user = Backend::User.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.json { render json: #user }
end
end
def edit
#user = Backend::User.find(params[:id])
end
def update
#user = Backend::User.find(params[:id])
respond_to do |format|
if #user.update_attributes(params[:user])
format.html { redirect_to #user, notice: 'Article was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: "edit" }
format.json { render json: #user.errors, status: :unprocessable_entity }
end
end
end
end
When I go on backend_users_path there is a list of all the users. I would like to permit to edit only his own profil.
So I go on the Edit page : <%= link_to "Edit", edit_backend_user_path(backend_user.id) %> .
Here's the Edit page code :
<%= simple_form_for #user do |f| %>
<div><%= f.label :email %><br />
<%= f.input :email, :autofocus => true %></div>
<div><%= f.submit "Update" %></div>
<% end %>
And there is my problem : when I try to modify the email address, nothing happen. The update fails.
How can I do this ?
I'm quite lost.
Thanks by advance.
Here's the log file :
Started PUT "/backend/users/1" for 127.0.0.1 at 2012-11-13 12:13:51 +0100
Processing by Backend::UsersController#update as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"wWrUDh7LVWhP+P7OWO6laDWaCKInxk37AA2BPuQWAI4=", "backend_user"=>{"email"=>"grellazzi#laposte.net"}, "commit"=>"Update", "id"=>"1"}
[1m[35mBackend::User Load (0.0ms)[0m SELECT `backend_users`.* FROM `backend_users` WHERE `backend_users`.`id` = 1 LIMIT 1
[1m[36mBackend::User Load (0.0ms)[0m [1mSELECT `backend_users`.* FROM `backend_users` WHERE `backend_users`.`id` = ? LIMIT 1[0m [["id", "1"]]
[1m[35mSQL (1.0ms)[0m BEGIN
[1m[36m (0.0ms)[0m [1mCOMMIT[0m
Redirected to http://localhost:3000/backend/users/1
Completed 302 Found in 23ms (ActiveRecord: 1.0ms)
Started GET "/backend/users/1" for 127.0.0.1 at 2012-11-13 12:13:51 +0100
Processing by Backend::UsersController#show as HTML
Parameters: {"id"=>"1"}
[1m[35mBackend::User Load (0.0ms)[0m SELECT `backend_users`.* FROM `backend_users` WHERE `backend_users`.`id` = 1 LIMIT 1
[1m[36mBackend::User Load (0.0ms)[0m [1mSELECT `backend_users`.* FROM `backend_users` WHERE `backend_users`.`id` = ? LIMIT 1[0m [["id", "1"]]
Rendered backend/users/show.html.erb within layouts/admin (0.0ms)
Completed 200 OK in 7ms (Views: 5.0ms | ActiveRecord: 0.0ms)
Thanks for your links, I tried to modify my user_controller with
if params[:user][:password].blank?
params[:user].delete("password")
params[:user].delete("password_confirmation")
end
#user = User.find(current_user.id)
if #user.update_attributes(params[:user])
# Sign in the user bypassing validation in case his password changed
sign_in #user, :bypass => true
redirect_to root_path
else
render "edit"
end
But it fails...

Answer 1

If nothing happens, that usually indicates a validation error, in your case probably a missing password or other data that is not part of your form but is still being validated. To debug this, output #user.errors.inspect to your logfile or look at error_messages_on #user in your view.
In general, take a look at these guides on how to allow users to edit their (partial) profile:
https://github.com/plataformatec/devise/wiki/How-To:-Allow-users-to-edit-their-account-without-providing-a-password
https://github.com/plataformatec/devise/wiki/How-To:-Allow-users-to-edit-their-password