我花了一段时间尝试并寻找调试此问题的答案。
我正在关注Railscast 250(从头开始验证),它适用于 Rails 4 上的 Rails 3。显然,我认为我已经使用常用方法解决了强参数问题。我目前收到此错误:
#User:0xb640d880 的未定义方法“密码”
提取的源代码(第 32 行附近):respond_to do |format|
if @user.save format.html { redirect_to @user, notice: 'User was successfully created.' } format.json { render action: 'show', status: :created, location: @user } else
我知道控制器可以访问密码属性,但由于某种原因,即使我正在验证模型中是否存在 :password,模型也无法访问。
用户.rb
class User < ActiveRecord::Base
before_save :encrypt_password
validates_confirmation_of :password
validates_presence_of :password, :on => :create
validates_presence_of :email
validates_uniqueness_of :email
def encrypt_password
if password.present?
self.password_salt = BCrypt::Engine.generate_salt
self.password_hash = BCrypt::Engine.hash_secret(password, password_salt)
end
end
end
users_controller.rb
class UsersController < ApplicationController
before_action :set_user, only: [:show, :edit, :update, :destroy]
# 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
end
# POST /users
# POST /users.json
def create
logger.warn user_params[:password]
@user = User.new(email: user_params[:email], password_hash: user_params[:password_hash], password_salt: user_params[:password_salt])
respond_to do |format|
if @user.save
format.html { redirect_to @user, notice: 'User was successfully created.' }
format.json { render action: 'show', status: :created, location: @user }
else
format.html { render action: '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 { head :no_content }
else
format.html { render action: '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 }
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 parameters from the scary internet, only allow the white list through.
def user_params
params.require(:user).permit(:email, :password_hash, :password_salt, :password)
end
end
_form.html.erb(视图)
<%= form_for(@user) do |f| %>
<% if @user.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@user.errors.count, "error") %> prohibited this user from being saved:</h2>
<ul>
<% @user.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :email %><br>
<%= f.text_field :email %>
</div>
<div class="field">
<%= f.label :password %><br>
<%= f.password_field :password %>
</div>
<div class="field">
<%= f.label :password %><br>
<%= f.password_field :password %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
谢谢你的帮助!