Ruby on rails 有许多嵌套表单不更新db rails
我正在建立一个博客类型的平台,用户可以在其中创建一个帐户,并且该用户有许多帖子,这些帖子应该显示在用户/显示页面上。我已经设置了posts和users表,并在之后添加了许多关系。当我提交表单时,它会提醒“用户帐户已更新”,但帖子不会显示在posts表中。我想我一定错过了一些重要的事情 Schema.rbRuby on rails 有许多嵌套表单不更新db rails,ruby-on-rails,Ruby On Rails,我正在建立一个博客类型的平台,用户可以在其中创建一个帐户,并且该用户有许多帖子,这些帖子应该显示在用户/显示页面上。我已经设置了posts和users表,并在之后添加了许多关系。当我提交表单时,它会提醒“用户帐户已更新”,但帖子不会显示在posts表中。我想我一定错过了一些重要的事情 Schema.rb create_table "posts", force: true do |t| t.text "title" t.text "body" t.str
create_table "posts", force: true do |t|
t.text "title"
t.text "body"
t.string "category1"
t.string "category2"
t.datetime "created_at"
t.datetime "updated_at"
t.string "image"
t.integer "user_id"
t.integer "category_id"
end
add_index "posts", ["category_id"], name: "index_posts_on_category_id", using: :btree
add_index "posts", ["user_id"], name: "index_posts_on_user_id", using: :btree
create_table "users", force: true do |t|
t.string "email"
t.string "password_digest"
t.boolean "admin"
t.datetime "created_at"
t.datetime "updated_at"
end
模型
class用户
控制器
class UsersController < ApplicationController
before_action :set_user, only: [:show, :edit, :update, :destroy]
# GET /users
# GET /users.json
def index
@users = User.all
end
def new
@user = User.new
end
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 parameters from the scary internet, only allow the white list through.
def user_params
params.require(:user).permit(:email, :password, :password_confirmation)
end
end
class UsersController
员额/新员额
<%= form_for current_user do |ff| %>
<%= ff.fields_for :post do |f| %>
<%= f.label :title %>
<%= f.text_field :title, class: "title", placeholder: "Post Title..." %>
<%= f.label :body %>
<%= f.text_area :body, id: "edit" %>
<%= f.submit %>
<% end %>
<% end %>
Rails 4在控制器中使用一种称为“强参数”的模式来确定可以为对象分配哪些属性。这位于UsersController的底部:
# Never trust parameters from the scary internet, only allow the white list through.
def user_params
params.require(:user).permit(:email, :password, :password_confirmation)
end
@post = Post.new post_params.merge(user_id: current_user.id)
然后注意,在create
操作中,这是在@user=user.new(user\u params)
行上调用的。由于使用嵌套属性与用户一起创建帖子,因此需要将帖子属性与允许的用户属性一起列入白名单,这可以通过传递哈希来实现,其中键是子对象的名称,值是需要为该对象列入白名单的属性数组。试试这个:
def user_params
params.require(:user).permit(:email, :password, :password_confirmation, post: [:title, :body])
end
您只允许存储用户参数,因为嵌套属性也允许post参数。用以下代码替换用户参数方法:
def user_params
params.require(:user).permit(:email, :password, :password_confirmation, post_attributes: [:title, :body])
end
我通过消除块的字段_并简化来修复此问题:
# posts/new
<%= form_for @post do |f| %>
<%= f.label :title %>
<%= f.text_field :title, class: "title", placeholder: "Post Title..." %>
<%= f.label :body %>
<%= f.text_area :body, id: "edit" %>
<%= f.submit %>
<% end %>
当前用户是以前定义的助手方法您使用的Rails版本是什么?你能发布你的用户控制器吗?Rails 4.1.8,刚刚添加了用户控制器的代码。还有一个posts控制器,其功能基本相同。
@post = Post.new post_params.merge(user_id: current_user.id)