我有一个创建项目的窗体。该表格收集两个表格的数据; 'projects'和'projects_users'。最后一个 是一个关系表,用于存储哪些用户是项目成员(在表单中选择)。在数据库中创建帖子时发生问题
创建一个新的项目工作正常,但是当涉及到创造“projects_users”它没有新的职位:
uninitialized constant ProjectsController::Projects_users
首先,我在正确的方式思考(见下面的代码) ?
我所做的是我从params [:project]中提取成员数组,这是从表单中检索的。然后我在数据库中创建项目,当完成后,我遍历成员数组(其中包含user_id)并在数据库中为'projects_users'创建帖子。
我在做什么错?有没有更好的方法来实现我想要的?
项目控制器:
class ProjectsController < ApplicationController
def new
@project = Project.new
@users = (current_user.blank? ? User.all : User.find(:all, :conditions => ["id != ?", current_user.id]))
end
def create
@members = params[:project].delete(:members)
@project = Project.new(params[:project].merge(:user_id => current_user.id))
if @project.save
@members.each do |member|
@project_members = Projects_users.new
@project_members.project_id = @project.project_id
@project_members.user_id = member.user_id
end
redirect_to @project
else
@users = (current_user.blank? ? User.all : User.find(:all, :conditions => ["id != ?", current_user.id]))
render :new
end
end
end
new.html.erb:
<%= form_for @project do |f| %>
<div class="alert alert-block">
<%= f.error_messages %>
</div>
<div class="text_field">
<%= f.label :title%>
<%= f.text_field :title%>
</div>
<div class="text_field">
<%= f.label :description%>
<%= f.text_field :description%>
</div>
<div class="dropdown">
<%= f.label :start_date%>
<%= f.date_select :start_date %>
</div>
<div class="dropdown">
<%= f.label :end_date%>
<%= f.date_select :end_date %>
</div><br/>
<span class="help-block">Välj användare som ska ingå ingå i projektet.</span>
<div class="checkbox">
<% @users.each do |user| %>
<%= check_box_tag "project[members][]", user.id, '1', :id => "user_#{user.id}" %>
<%= label_tag "user_#{user.id}", user.first_name + ' ' + user.last_name, :class => "checkbox" %>
<% end %>
</div>
</div>
<div class="submit">
<%= f.submit "Spara" %>
</div>
<% end %>
项目模型:
class Project < ActiveRecord::Base
has_and_belongs_to_many :users, :class_name => 'User'
belongs_to :user
has_many :tickets, :dependent => :destroy
// validation...
# Setup accessible (or protected) attributes for your model
attr_accessible :user_id, :title, :description, :start_date, :end_date
end
个用户模式:
class User < ActiveRecord::Base
attr_accessible :first_name, :last_name, :email, :password
has_and_belongs_to_many :projects
has_many :tickets
... other code
end
projects_users表:
project_id
user_id
项目表:
user_id (the user that creates the project = admin)
title
description
start_date
end_date
非常感谢您的回答!在你的解决方案中,projects_users表在哪里使用? @ project.user_ids是指项目表,而不是我假设的'project_users'?项目表中的字段user_id仅存储项目创建者的user_id。 – holyredbeard 2013-02-10 17:50:42
是的,这是铁路协会的魔力。它只是添加这些user_ids加入/关联表,在这种情况下,它是projects_users。 :) – 2013-02-10 18:00:54
啊,真的很酷!会立即尝试一下!:) – holyredbeard 2013-02-10 21:15:14