Question

我是Rails的新手，我有一个问题，我正在尝试创建项目，但我创建的每个项目都有user_id nil。如果我在localhost中创建项目并检查以确保它是在rails控制台中创建的，则会显示user_id = nil。在此先感谢您的帮助！

使用设计创建用户。

项目控制器

class ItemsController < ApplicationController

  def create
    @user = User.find(params[:user_id])
    @item = Item.new(item_params)
    @item.user = current_user
    if @item.save
      @item = Item.update_items(params[:items])
      redirect_to @user, notice: "Item was saved successfully."
    else
      flash[:error] = "Error creating item. Please try again."
      render @user
    end
  end

  private

  def item_params
    params.require(:item).permit(:name)
  end
end

用户控制器

class UsersController < ApplicationController
  # before_action :authenticate_user!

  def show
    @user = User.find(params[:id])
    @item = Item.new
    @items = @user.items
  end
end

Answer 1

我注释掉了authenticate before_filter，它不允许分配user_id ....愚蠢的错误！

Answer 2

class ItemsController < ApplicationController

  def create
    user = current_user
    @item = current_user.items.new(params[:items])
    if @item.save
      redirect_to current_user, notice: "Item was saved successfully."
    else
      flash[:error] = "Error creating item. Please try again."
      render @user
    end
  end

  private

  def item_params
    params.require(:item).permit(:name)
  end
end

确保您的模型中有正确的关联

class Item < ActiveRecord::Base
  belongs_to :user
  ...
end

class User < ActiveRecord::Base
  has_many :items
  ...
end

当我尝试创建项目时，user_id为nil

2 个答案: