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POChanging roles in rails 4
 

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    <p>I created the app with the help of rails composer. Using devise for authentication and cancan for managing roles. So I have 3 roles by default: Admin, User and VIP. I deleted VIP, because I don't need it. Run rake db:seed to create a default admin. Then I'm coming to localhost and seeing the "First User" as admin. I logout and register(signup) a new user. Then, signing in again as admin. I see, that by deafault, this new user doesn't have any role. And also I see, that I can change it("Change role" - button). I push it and as admin can choose whether new user will be the second admin or just User. I choose, for example, User, push "change role" and have an "ArgumentError in UsersController#update wrong number of arguments (2 for 1)". </p> <p>Sooo, I have two questions: 1. How to give my admin the ability to change roles without errors. 2. How to make new signing up users to have default role "User".</p> <p>Thanks!</p> <p>Ok, I managed to set the default role this way: </p> <pre><code> after_create :assign_reader_role private def assign_reader_role self.add_role "user" end </code></pre> <p>Here is my UserControlle:</p> <pre><code>class UsersController &lt; ApplicationController before_filter :authenticate_user! def index authorize! :index, @user, :message =&gt; 'Not authorized as an administrator.' @users = User.all end def show @user = User.find(params[:id]) end def update authorize! :update, @user, :message =&gt; 'Not authorized as an administrator.' user = User.find(params[:id]) if user.update_attributes(user_params) redirect_to users_path, :notice =&gt; "User updated." else redirect_to users_path, :alert =&gt; "Unable to update user." end end def destroy authorize! :destroy, @user, :message =&gt; 'Not authorized as an administrator.' user = User.find(params[:id]) unless user == current_user user.destroy redirect_to users_path, :notice =&gt; "User deleted." else redirect_to users_path, :notice =&gt; "Can't delete yourself." end end private def user_params params.require(:user).permit(:name, :email) end end </code></pre> <p>Here is models. User: class User &lt; ActiveRecord::Base after_create :assign_reader_role rolify devise :database_authenticatable, :registerable,#:confirmable, :recoverable, :rememberable, :trackable, :validatable</p> <pre><code> validates_presence_of :name private def assign_reader_role self.add_role "user" end end </code></pre> <p>Role: </p> <pre><code>class Role &lt; ActiveRecord::Base has_and_belongs_to_many :users, :join_table =&gt; :users_roles belongs_to :resource, :polymorphic =&gt; true scopify end </code></pre> <p>UserController I've already put! And where can I take params from the form?</p>
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    1. COOh, forgot to say, "Delete"-button works perfect. It deletes the user without any errors.
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    2. COadd params which comes from the form and write line where the error is raised
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    3. COLine 17. if @user.update_attributes(params[:user], :as => :admin) Whereas I'm a little bit newbie in rails, could you please tell me, where can I see the params, which come from the form
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