RailsTutorial サンプル アプリ (Twitter のようなアプリケーション) をインストールしました。ユーザー データベースを更新しようとすると、次のコンソール コードがデータベースを更新しない理由を理解しようとしています。を使用すると、ユーザー情報が更新されることを期待していますuser.save
。ただし、これは未編集のデータにロールバックします。これはユーザーベースの制限によるものですか?
ユーザーコントローラー:
class UsersController < ApplicationController
#before_filter :signed_in_user, only: [:index, :edit, :update, :destroy, :following, :followers]
# By default before filters apply to all actions
#before_filter :correct_user, only: [:edit, :update]
def edit
@user = User.find(params[:id])
end
def update
@user = User.find params[:id]
respond_to do |format|
if @user.update_attributes(params[:user])
flash[:notice] = "Profile updated"
format.html { redirect_to(@user, :notice => 'User was successfully updated.') }
format.json { respond_with_bip(@user) }
else
format.html { render :action => "edit" }
format.json { respond_with_bip(@user) }
end
end
end
private
def correct_user
@user = User.find(params[:id])
redirect_to(root_path) unless current_user?(@user)
end
def admin_user
redirect_to(root_path) unless current_user.admin?
end
end
Rails コンソール:
1.9.3-p392 :001 > user = User.find(109)
User Load (8.2ms) SELECT "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1 [["id", 109]]
=> #<User id: 109, name: "laurie", email: "auriepage@gmail.com", created_at: "2013-09-26 18:10:12", updated_at: "2013-09-26 18:10:12", password_digest: "$2a$10$aXEtun8Z2Deqy2wNxvFRNOjPczKQkYc1vDezP5OduJuF...", remember_token: "YhIUhgFm9iMewxdNOHJ45A", admin: false>
1.9.3-p392 :002 > user.name = "larry"
=> "larry"
1.9.3-p392 :003 > user.save
(0.2ms) begin transaction
User Exists (0.6ms) SELECT 1 AS one FROM "users" WHERE (LOWER("users"."email") = LOWER('auriepage@gmail.com') AND "users"."id" != 109) LIMIT 1
(0.1ms) rollback transaction
=> false
ユーザーモデル:
class User < ActiveRecord::Base
# Declaration of public variables
attr_accessible :email, :name, :password, :password_confirmation
has_secure_password
has_many :microposts, dependent: :destroy
has_many :relationships, foreign_key: "follower_id", dependent: :destroy
has_many :followed_users, through: :relationships, source: :followed
has_many :reverse_relationships, foreign_key: "followed_id", class_name: "Relationship", dependent: :destroy
has_many :followers, through: :reverse_relationships, source: :follower
before_save {email.downcase!}
before_save :create_remember_token
validates :name, presence: true, length: {maximum: 50}
VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i
validates :email, presence: true, format: {with: VALID_EMAIL_REGEX}, uniqueness: {case_sensitive: false}
validates :password, presence: true, length: {minimum: 6}
validates :password_confirmation, presence: true
after_validation {self.errors.messages.delete(:password_digest)}
private
def create_remember_token
self.remember_token = SecureRandom.urlsafe_base64
end
end