嵌套模型形式和 update_attributes

发布于 2024-09-26 16:20:59 字数 358 浏览 2 评论 0原文

我有一个嵌套模型表单，类 Project 和类 TeamMember 之间具有一对多关系，并且在控制器中，有一个更新函数，例如：

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

@project.update_attributes(params[:project])

现在，我想在保存之前为某些团队成员设置一些表单中未设置的字段发生。我无法按原样使用 update_attributes 函数。

最好的方法是什么？

谢谢，尼古拉斯.

原文

I have a nested-model form with a one-to-many relationship between a class Project and class TeamMember, and in the controller, an update function like :

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

@project.update_attributes(params[:project])

Now, I'd like to set some fields that are not set in the form for some of the team members before the saving happens. I cannot use the update_attributes function as is to do so.

What would be the best way to do it ?

Thanks,
Nicolas.

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雾里花 2024-10-03 16:20:59

我会研究 accepts_nested_attributes_for 函数。您可能会遇到类似的情况：

class Project < ActiveRecord::Base
  has_one :team
  accepts_nested_attributes_for :team

  # also this will be useful
  validates_associated :team
end

在表单中，您需要使用 fields_for 方法来嵌套属性。这可能看起来像：

<% form_for(@project) do |p| %>
  <%= p.error_messages %>
  <!-- Project name -->
  <%= p.text_field :name %>

  <% f.fields_for(@project.team) do |t| %>
    <!-- Team Name -->
    <%= t.text_field :name %>
  <% end %>

  <%= f.submit 'Create Project' %>
<% end %>

当您提交表单时，您将能够调用 @project.update_attributes(params[:project]) 并且它将起作用。您还可以raise params.inspect来查看参数是如何嵌套的。

希望这有帮助。

I would look into the accepts_nested_attributes_for function. You might have something like:

class Project < ActiveRecord::Base
  has_one :team
  accepts_nested_attributes_for :team

  # also this will be useful
  validates_associated :team
end

In your forms you will want to use the fields_for method to nest your attributes. That might look something like:

<% form_for(@project) do |p| %>
  <%= p.error_messages %>
  <!-- Project name -->
  <%= p.text_field :name %>

  <% f.fields_for(@project.team) do |t| %>
    <!-- Team Name -->
    <%= t.text_field :name %>
  <% end %>

  <%= f.submit 'Create Project' %>
<% end %>

When you submit the form you will be able to call @project.update_attributes(params[:project]) and it will work. You can also raise params.inspect to see how the params are nested.

Hope this helps.

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