skill-assessment-app/app/controllers/admin/user_controller.rb

module Admin
  class UserController < AdminController
    def index
      @users = User.order(:name)
    end

    def new
      @user = User.new
    end

    def create
      default_passwd = SecureRandom.urlsafe_base64(12)
      @user = User.create({ password: default_passwd }.merge(user_params.to_h))

      if @user.persisted?
        UserMailer.welcome(@user, default_passwd).deliver_now
        redirect_to admin_users_path, flash: { success: "Sucessfully created user #{@user.name}" }
      else
        flash[:error] = "Failed to save user."
        render :new
      end
    end

    def view
      @user = User.find(params[:user_id])
    end

    def edit
      @user = User.find(params[:user_id])
    end

    def update
      @user = User.find(params[:user_id])

      if @user.update_attributes(user_params)
        redirect_to admin_user_path(@user.to_i),
                    flash: { success: "Sucessfully updated #{@user.name}" }
      else
        flash[:error] = "Failed to update user."
        render :edit
      end
    end

    private

      def user_params
        params.require(:user).permit(:name, :email, :role, :password)
      end
  end
end