Question

我在尝试让我的编辑和更新操作适用于我的应用时遇到了实际问题。我想编辑与项目链接的技术。

def edit
  @project = Project.find(params[:id])

  @project_technol = @project.projecttechnols.build
end



def update
   @project = Project.find(params[:id])
   @project.client = params[:new_client] unless params[:new_client].blank?
   @project.role = params[:new_role] unless params[:new_role].blank?
   @project.industry = params[:new_industry] unless params[:new_industry].blank?
   @project.business_div = params[:new_business_div] unless params[:new_business_div].blank?

   params[:technols][:id].each do |tech|

     if !tech.empty?

      @project_technol = @project.projecttechnols.build(:technol_id => tech) 

   end

项目模型：

class Project < ActiveRecord::Base
  attr_accessible  :fullname, :edited_first_name, :edited_last_name, :first_name, :last_name, :business_div, :client, :customer_benefits, :edited_date, :end_date, :entry_date,:industry, :keywords, :lessons_learned, :project_name, :project_owner, :role, :start_date, :status, :summary, :tech , :technols, 

has_many :projecttechnols
has_many :technols, :through => :projecttechnols

accepts_nested_attributes_for(:technols)

当我进入编辑表单时，未在集合选择中选择先前选择的技术。

编辑表格

<%= f.fields_for(@project_technol) do |t| %>
  <%= t.label "Choose Technologies"%> </br>
  <%= t.collection_select(:id, Technol.all, :id, :tech, {}, {:multiple => true } ) %>
<% end %>

<% @project.technols.each do |t| %>
    <li><%= t.tech %> <%= link_to "Details", technol_path(t), method: :delete, %></li>
  <% end %>

我可以看到哪些技术使用@project.technols.each do |t|循环，因此它们被找到，但它们没有显示collection_select。请有人指出我正确的方向。我是rails的新手，所以它可能是我不理解的每一个简单的东西。提前谢谢。

Answer 1

尝试这样的事情：

<p><%= f.label :skills %><ul>
<% for skill in Skill.all %>
    <li>
      <%= check_box_tag "user[skill_ids][]", skill.id, @user.skills.include?(skill) %>
      <%= skill.name %>
    </li>
<% end %>
</ul>
</p>

从更新操作中删除代码

   params[:technols][:id].each do |tech|

     if !tech.empty?

      @project_technol = @project.projecttechnols.build(:technol_id => tech) 

   end

在项目模型中，您需要类似

的内容

enter code here attr_accessible：technols_ids

Rails：编辑形式的collection_select

1 个答案: