Monday, November 18, 2013

[Rails] Re: Adding role's field to users

Hi Walter,

Thanks for reply.

Yes I have added in roles, but perhaps I am doing it wrong? Here is my users controller for creating and updating...


def create
    @user = User.new(params[:user].permit(:email, :password, :roles))
    # authorize! :manage, @users

    respond_to do |format|
      if @user.save
        format.html { redirect_to(@user, :notice => 'User was successfully created.') }
        format.xml  { render :xml => @user, :status => :created, :location => @user }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @user.errors, :status => :unprocessable_entity }
      end
    end
  end

  # PUT /users/1
  # PUT /users/1.xml
  def update
    @user = User.find(params[:id])

    respond_to do |format|
      if @user.update(params[:user].permit(:email, :password, :roles))
        format.html { redirect_to(@user, :notice => 'User was successfully updated.') }
        format.xml  { head :ok }
      else
        format.html { render :action => "edit" }
        format.xml  { render :xml => @user.errors, :status => :unprocessable_entity }
      end
    end
  end



On Monday, November 18, 2013 7:03:09 PM UTC, Phillip wrote:
Hi,

(Using Rails 4.0.1, Ruby 1.9.3, latest devise and cancan gems. sqlite db for local development)

I am a rookie, setting up website and was adding roles(using cancan gem) to my users table. Everything works great, except when I select a role for a user it is not getting saved. The user gets saved/created OK but it never updates/ remembers any roles assigned to the user.

I was following the advice given here(Many roles per user). Any help or advice is most appreciated...


Here is my users form...

<%= form_for(@user) do |f| %>
<div class="field">
    <%= f.label :email %><br />
    <%= f.text_field :email %>
  </div>
  <% if @current_method == "new" %>
    <div class="field">
      <%= f.label :password %><br />
      <%= f.password_field :password %>
    </div>
    <div class="field">
      <%= f.label :password_confirmation %><br />
      <%= f.password_field :password_confirmation %>
    </div>
  <% end %>
  <% for role in User::ROLES %>
    <%= check_box_tag "user[roles][#{role}]", role, @user.roles.include?(role), {:name => "user[roles][]"}%>
    <%= label_tag "user_roles_#{role}", role.humanize %><br />
  <% end %>
  <%= hidden_field_tag "user[roles][]", "" %>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>



# /app/model/user.rb

class User < ActiveRecord::Base

  ROLES = %w[admin blog_author]

  def roles=(roles)
    self.roles_mask = (roles & ROLES).map { |r| 2**ROLES.index(r) }.inject(0, :+)
  end

  def roles
    ROLES.reject do |r|
      ((roles_mask.to_i || 0) & 2**ROLES.index(r)).zero?
    end
  end

  def is?(role)
    roles.include?(role.to_s)
  end

  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable
end

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