创建者必须在 Rails 上存在错误 Ruby

Question

我有两个模型，问题和用户

用户：

class User < ApplicationRecord
    has_many :created_issues, :class_name => 'Issue', :foreign_key => 'creator_id'
    has_many :assigned_issues, :class_name => 'Issue', :foreign_key => 'assigned_id'
end

问题：

class Issue < ApplicationRecord
    belongs_to     :creator,
                   :class_name => "User",
                   :foreign_key  => "creator_id"

    belongs_to     :assigned,
                   :class_name => "User",
                   :foreign_key  => "assigned_id" 
end

迁移文件：

class CreateIssues < ActiveRecord::Migration[5.1]
  def change
    create_table :issues do |t|
      t.string :title
      t.text :description
      t.integer :assigned_id
      t.string :tipo
      t.string :prioridad
      t.string :estado
      t.references :creator
      t.references :assigned

     add_foreign_key :issues, :users, column: :creator_id, primary_key: :id
     add_foreign_key :issues, :users, column: :assigned_id, primary_key: :id
      t.timestamps
    end
  end
end

部分架构：

ActiveRecord::Schema.define(version: 20171030104901) do

create_table "issues", force: :cascade do |t|
    t.string "title"
    t.text "description"
    t.integer "assigned_id"
    t.string "tipo"
    t.string "prioridad"
    t.string "estado"
    t.integer "creator_id"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false`enter code here`
    t.index ["assigned_id"], name: "index_issues_on_assigned_id"
    t.index ["creator_id"], name: "index_issues_on_creator_id"
  end

结束

在我得到的表格中，他的字段 Creator 必须存在，但我在插入中看到它很好：

Parameters: {"utf8"=>"✓", "authenticity_token"=>"2yY/0x6961iIb9PxcyQAKHUSRqEj+zwQ91uPwHibU9tWjEXqiKMqp3vwzI70FVI2agtYhPgljFPDZjVZV4cmyg==", "issue"=>{"title"=>"asdsad", "description"=>"asdsa", "creator_id"=>"2", "tipo"=>"adas", "prioridad"=>"dsdaasd", "assigned_id"=>"3"}, "commit"=>"Create Issue"}
Unpermitted parameter: :creator_id
(0.1ms) begin transaction
User Load (0.3ms) SELECT "users".* FROM "users" WHERE "users"."id" = ? LIMIT ? [["id", 3], ["LIMIT", 1]]
(0.1ms) rollback transaction

有帮助吗？

Answer 1

您的 creator_id 未列入白名单：

Unpermitted parameter: :creator_id

你应该 post 你正在做的控制器代码 params.require(...).permit(...) 这样我们就可以看到那里有什么。

它应该看起来像：

def issue_params
  params.
    require(:issue).
    permit(:title, :description, :creator_id, :tipo, :prioridad, :assigned_id)
end

Answer 2

如果您使用的是 strong_parameters gem，那么 jvillian 的回答将有效。如果不是（这是完全有可能的，因为它直到 Rails 4 才被广泛使用），您可能需要将 attr_accessible :creator_id 添加到您的问题模型中。

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