导轨：如何有一个嵌套的形式保存到不同的嵌套模型？ [英] Rails: How to have a nested form save to different nested models?

问题描述

上下文：

我有有许多项目 A 公司模式。每个项目有许多任务。在公司有许多员工。

I have a Company model that has many projects. Each project has many tasks. The company has many employees.

员工属于公司并且有许多任务 。这是每个任务一个员工和雇员将只有一个任务每项目。

Employee belongs to Company and has many tasks. It is one employee per task and an employee will have only one task per project.

模式：

问题：

我建立一个窗体创建一个项目，用户可以添加多个任务。每个任务都有的小时指定和员工执行任务金额。在提交的形式应该创建一个项目的记录，一个或多个任务记录与小时和 EMPLOYEE_ID 属性和（！）检查员工名称数据库中已存在或创建一个新的。

I'm building a form to create a project where the user can add multiple tasks. Each task has an amount of hours specified and the employee performing the task. Upon submission the form should create a single project record, one or more task records with hours and employee_id attributes and (!) check if the employee name already exists in the database or create a new one.

我用怎样的形式为拯救苦苦挣扎的 EMPLOYEE_ID ，而不是 employee_name 。

I'm struggling with how to have the form save the employee_id rather than the employee_name.

code：

我的格式如下：

<%= simple_nested_form_for @project do |f| %>
    <%= f.input :project_details %>
    <%= f.simple_fields_for :tasks do |task| %>
        <%= task.input :employee_name, input_html: { data: { autocomplete_source: @queried_employee_names.to_json } } %>
        <%= task.input :hours %>
    <% end %>
    <%= f.link_to_add "Add +", :tasks %>
    <%= f.button :submit %>
<% end %>

我的控制器：

class TransactionsController < ApplicationController

  def new
    @project = current_company.projects.build
  end

  def create
    @project = current_company.projects.new(project_params)
    if @project.save
        employee_save
        redirect_to success_url
    else
        @project = current_company.projects.build
        render :new
    end
  end


    # save the employees not yet in the database
    def employee_save
      @project.tasks.each do |task|
            if current_company.employees.where(name: task.employee_name).empty?
              current_company.employees.new(name: task.employee_name).save 
            end
        end
    end

  def project_params
    params.require(:project).permit(:project_details, tasks_attributes: [:id, :employee_name, :hours, :_destroy])
  end
end

问：

不幸的是，这将保存到任务表中的 employee_name ，而不是 EMPLOYEE_ID （加写一个新的 employee_name 到员工表）。当然，任务表应该只包含 employee_ids 和员工表中的名称。

Unfortunately, this would save to the tasks table the employee_name rather than employee_id (plus writing a new employee_name to the employees table). Of course, the tasks table should only contain the employee_ids and the employee table the names.

对如何处理这有什么建议？

Any suggestions on how to approach this?

推荐答案

我会像表单中添加一个隐藏字段：

I would add a hidden field in the form like:

<%= simple_nested_form_for @project do |f| %>
    <%= f.input :project_details %>
    <%= f.simple_fields_for :tasks do |task| %>
        <%= task.input :employee_name, input_html: { data: { autocomplete_source: @queried_employee_names.to_json } } %>
        <%= task.hidden_field :employee_id, '' %>
        <%= task.input :hours %>
    <% end %>
    <%= f.link_to_add "Add +", :tasks %>
    <%= f.button :submit %>
<% end %>

本场必须通过Ajax的填补。我看到你有一个自动完成源的：employee_name 输入字段，那么你可以在那里当您选择员工添加事件，并通过Ajax的获得ID，并填补了隐藏与选定员工的id字段，这样你可以很容易地保存这些数据的创建操作。

This field must be filled through Ajax. I see you have an autocomplete source in your :employee_name input field, well you can add an event there when you select the employee, and get the id through Ajax and fill the hidden field with the id of the selected employee, that way you can easily save that data in your create action.

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