Rails：未使用正確的默認角色創建用戶

Question

在我的Rails應用程序中，我只有兩個角色，Admin和User，我在我的架構和用戶模型中定義了這兩個角色。這裏是我的schema.rb與用戶表：

create_table "users", force: :cascade do |t| 
    t.string "first_name" 
    t.string "last_name" 
    t.datetime "created_at",       null: false 
    t.datetime "updated_at",       null: false 
    t.string "email",     default: "", null: false 
    t.string "encrypted_password",  default: "", null: false 
    t.string "reset_password_token" 
    t.datetime "reset_password_sent_at" 
    t.datetime "remember_created_at" 
    t.integer "sign_in_count",   default: 0, null: false 
    t.datetime "current_sign_in_at" 
    t.datetime "last_sign_in_at" 
    t.inet  "current_sign_in_ip" 
    t.inet  "last_sign_in_ip" 
    t.integer "role",     default: 2 
    end 

    add_index "users", ["email"], name: "index_users_on_email", unique: true, using: :btree 
    add_index "users", ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true, using: :btree 

end 

首先，這裏是我的用戶模型：

class User < ActiveRecord::Base 
    #Defining different roles 
    enum role: [:Admin, :User] 
    #Users can only have one scholarship application 
    has_one :applications 
    # Include default devise modules. Others available are: 
    # :confirmable, :lockable, :timeoutable and :omniauthable 
    devise :database_authenticatable, :registerable, 
     :recoverable, :rememberable, :trackable, :validatable 
end 

我的能力模型：

class Ability 
    include CanCan::Ability 

    def initialize(user) 
    user ||= User.new # guest user (not logged in) 
     if user.role = 1 
      can :manage, :all 
     elsif user.role = 2 
      can :manage, Application 
      can :manage, User 
     else 
      can :read, Static_Page 
     end 
    end 
end 

我的用戶控制器：

class UsersController < ApplicationController 
    before_action :authenticate_user 
    #Users who are not signed in cannot view users list 
    before_action :set_user, only: [:show, :edit, :update, :destroy] 
    load_and_authorize_resource 

    # GET /users 
    # GET /users.json 
    def index 
    @users = User.all 
    end 

    # GET /users/1 
    # GET /users/1.json 
    def show 
    end 

    # GET /users/new 
    def new 
    @user = User.new 
    end 

    # GET /users/1/edit 
    def edit 
    @user = current_user 
    end 

    # POST /users 
    # POST /users.json 
    def create 
    @user = User.new(user_params) 

    respond_to do |format| 
     if @user.save 
     format.html { redirect_to @user, notice: 'User was successfully created.' } 
     format.json { render :show, status: :created, location: @user } 
     else 
     format.html { render :new } 
     format.json { render json: @user.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

    # PATCH/PUT /users/1 
    # PATCH/PUT /users/1.json 
    def update 
    respond_to do |format| 
     if @user.update(user_params) 
     format.html { redirect_to @user, notice: 'User was successfully updated.' } 
     format.json { render :show, status: :ok, location: @user } 
     else 
     format.html { render :edit } 
     format.json { render json: @user.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

    # DELETE /users/1 
    # DELETE /users/1.json 
    def destroy 
    @user.destroy 
    respond_to do |format| 
     format.html { redirect_to users_url, notice: 'User was successfully destroyed.' } 
     format.json { head :no_content } 
    end 
    end 

    private 
    # Use callbacks to share common setup or constraints between actions. 
    def set_user 
     @user = User.find(params[:id]) 
    end 

    #Never trust paramaters from the scary internet, man. 
    def user_params 
     params.require(:user).permit(:first_name, :last_name) 
    end 
end 

在我看來，我加了一些co基於用戶的角色要顯示nditions，如這樣的：

<% if user_signed_in? %> 
<h4 class="center"> Welcome <%= current_user.first_name %>!</h4> 
<% end %> 
<% if user_signed_in? && current_user.role = "Admin" %> 

<h4 class="center"> You are a <%= current_user.role %>, you can view all applications, edit them, delete users, and more!!</h4> 
<% elsif user_signed_in? && current_user.role = "User" %> 
<h4 class="center"> Thank you for your interest in our scholarship. As a <%= current_user.role %>, you may create, edit, or delete your scholarship application now that you are signed in.</h4> 

<% else %> 
<h4 class="center"> Welcome to the Philanthropist's Scholarship Application! Please create an account to apply for our scholarship!</h4> 

<% end %> 

我跟着我的用戶視圖 - 使得對於一個管理員CP上述邏輯（管理員）和帳戶設置（對於用戶）視圖中的admin CP會向用戶顯示所有用戶（如默認導軌腳手架），而帳戶設置僅顯示當前用戶的用戶信息。

唯一的問題是，當我創建一個新用戶時，它總是說用戶是管理員，我創建一個新用戶，並且角色值似乎不等於2（「用戶」） ，他們只是一個管理員，可以做任何事情。

有什麼建議嗎？

Answer 1

您需要在視圖中使用== not =才能獲得正確的功能。此外，您的用戶表中的字段是整數...

t.integer "role",     default: 2 

<% if user_signed_in? %> 
<h4 class="center"> Welcome <%= current_user.first_name %>!</h4> 
<% end %> 
<% if user_signed_in? && current_user.role == 1 %> 

<h4 class="center"> You are a <%= current_user.role %>, you can view all applications, edit them, delete users, and more!!</h4> 
<% elsif user_signed_in? && current_user.role == 2 %> 
<h4 class="center"> Thank you for your interest in our scholarship. As a <%= current_user.role %>, you may create, edit, or delete your scholarship application now that you are signed in.</h4> 

<% else %> 
<h4 class="center"> Welcome to the Philanthropist's Scholarship Application! Please create an account to apply for our scholarship!</h4> 

<% end %>