ruby - Adding Role dynamically through Form USing Rolify along with Devise and Cancan -

i followed tutorial "https://github.com/eppo/rolify/wiki/tutorial" nice , working fine. question can't add role through form out using rails console.

<div class="field"><%= user_form.label :email %><br /> <%= user_form.email_field :email %></div> <div class="field"><%= user_form.label :password %><br /> <%= user_form.password_field :password %></div> <div class="field"><%= user_form.label :password_confirmation %><br /> <%= user_form.password_field :password_confirmation %></div> <div class="field">   <%= f.label :roles %>   <div class="controls">     <% role.all.each |role| %>       <%= check_box_tag "user[role_ids][]", role.id, @user.role_ids.include?(role.id) %>       <%= role.name %><br />     <% end %>   </div> </div> <% end %> 

the role column connect roles table (rolify roles)

here role.rb

class role < activerecord::base

has_and_belongs_to_many :users, :join_table => :users_roles

belongs_to :resource, :polymorphic => true

user.rb

class user < activerecord::base

belongs_to :account, :inverse_of => :users

validates :account, :presence => true

rolify

attr_accessible :role_ids

# include default devise modules. others available are: # :confirmable, :lockable, :timeoutable , :omniauthable

devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable

# setup accessible (or protected) attributes model

attr_accessible :email, :password, :password_confirmation, :remember_me, :role_ids

# attr_accessible :title, :body

has_many :auditinits

end

any appreciate!!

in user form, make drop down select roles as,

<%= user_form.select :role,options_from_collection_for_select(role.all,"name","name) %> 

modify create action in users controller as

@user = user.new(user_params)  @user.add_role params[:user][:role]