Rails - Couldn't find User with id=edit - ruby-on-rails

Question

I am using Rails 3 and Devise for authentication. When I try to update my current_user, an exception is thrown stating:
Couldn't find User with id=edit
app/controllers/users_controller.rb:49:in `update'
Here is update and edit in UsersController:
#UsersController.rb
def update
#user = User.find(params[:id])
respond_to do |format|
if #user.update_attributes(params[:user])
format.html { redirect_to #user, notice: 'User 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
def edit
#user = User.find(params[:id])
end
And here is /views/layouts/_navigation.html.erb:
<%= link_to "Home", root_path, :class => 'brand' %>
<ul class="nav">
<% if user_signed_in? %>
<li>
<%= link_to('Logout', destroy_user_session_path, :method=>'delete') %>
</li>
<% else %>
<li>
<%= link_to('Login', new_user_session_path) %>
</li>
<% end %>
<li>
<%= link_to('About', help_about_path) %>
</li>
<% if user_signed_in? %>
<li>
<%= link_to('Edit Account', edit_user_path(current_user)) %>
</li>
<% end %>
<% if user_signed_in? and current_user.role == "gen_admin" || current_user.role == "teacher" %>
<li>
<%= link_to('View Students', users_path ) %>
</li>
<% end %>
<% if user_signed_in? and current_user.role == "gen_admin" || current_user.role == "teacher" %>
<li>
<%= link_to('New User', new_user_path ) %>
</li>
<% end %>
<% if user_signed_in? %>
<li>
<%= link_to('Student Data', data_path) %>
</li>
<% end %>
</ul>
Finally, here is /views/devise/registrations/edit.html.erb:
<h2>Edit <%= resource_name.to_s.humanize %></h2>
<%= form_for(resource, :as => resource_name, :url => edit_user_registration_path(resource_name), :html => { :method => :put }) do |f| %>
<%= devise_error_messages! %>
<div><%= f.label :email %><br />
<%= f.email_field :email, :autofocus => true %></div>
<div><%= f.label :teacher %><br />
<%= f.text_field :teacher %></div>
<% if devise_mapping.confirmable? && resource.pending_reconfirmation? %>
<div>Currently waiting confirmation for: <%= resource.unconfirmed_email %></div>
<% end %>
<div><%= f.label :new_password %> <i>(leave blank if you don't want to change it)</i><br />
<%= f.password_field :password, :autocomplete => "off" %></div>
<div><%= f.label :password_confirmation %><br />
<%= f.password_field :password_confirmation %></div>
<div><%= f.label :current_password %> <i>(we need your current password to confirm your changes)</i><br />
<%= f.password_field :current_password %></div>
<div><%= f.submit "Update" %></div>
<% end %>
<%= link_to "Back", :back %>
Why is the user id=edit? Here is my hash, if that helps:
{"utf8"=>"✓",
"_method"=>"put",
"authenticity_token"=>"7g1WsNCVuNY/5ZTeBUdv97tbdAPacvvDAzBSMGCcuNY=",
"user"=>{"email"=>"email#admin.com",
"teacher"=>"Demont",
"password"=>"[FILTERED]",
"password_confirmation"=>"[FILTERED]",
"current_password"=>"[FILTERED]"},
"commit"=>"Update",
"id"=>"edit",
"format"=>"user"}

Answer 1

Try using:
#user = current_user
Something looks to be wrong with your route or edit form. Try using the form like in their wiki page...
https://github.com/plataformatec/devise/wiki/How-To:-Allow-users-to-edit-their-password
But the above code should get around this

Answer 2

Most likely you I've got conflict in your routes when added UsersController.
There is devise's wiki page explaining that.
Default devise's route for edit user is /users/edit but in your controller path for update action is /users/:id. What's why you've got "edit" instead of user_id

Answer 3

Use
<%= form_for(#resource, :as => resource_name, :url => edit_user_registration_path(resource_name), :html => { :method => :put }) do |f| %>
to your form view and
#resource = User.find(params[:id])
in your edit action.