Ruby on rails fields_for表单

问题描述

您好，



非常感谢您的帮助。我在理解fields_for如何工作方面遇到了一些问题。我有一个has_many：ads的位置模型。我想做一个过滤位置和广告的表单。我正在考虑使用以下语法：

Hello,

thanks a lot for you help. I am having some issues in understanding how fields_for works. I have a location model that has_many :ads. I would like to do a form for filtering locations and ads. I am thinking of using the following syntax:

<%= form_for(@locations) do |f| %>
      <%= f.label :country, "Description" %>
      <%= f.text_field :country, :class => "form-control" %>

然后我会使用fields_for（@locations，@ locations.ads.build）作为广告模型一部分的字段，但由于@ locations.ads是一个数组，我无法使其工作。

then I would use the fields_for(@locations, @locations.ads.build) for those fields that are part of the Ad model, but I am not able to make this work because @locations.ads is an array.

<% fields_for(@locations, @locations.ads.build) do |u| %>
<%= u.label :skill_list, "Skills" %>
<%= u.text_field :skill_list %>
<% end %> 

所以我想了解我应该如何在@ locations.ads.build中使用fields_for？



你能给我任何建议，解释和帮助吗？

我这样做是因为我想做@locations = Location.all，过滤广告基于@ location.country和@ ads.skill_list



非常感谢

Fabrizio



我尝试了什么：



我一直在网上搜索解释，我想发布一个关于这个

So I am trying to understand how should I use fields_for with @locations.ads.build?

Could you please give me any advice, explanation and help?
I am doing this because I want to do @locations = Location.all, the filter the ads based on the @location.country and @ads.skill_list

Thanks a lot
Fabrizio

What I have tried:

I have been searching online for explanation and I thought of posting a question about this

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