options_from_collection_for_select -nomethoderror或grighterror-如何添加正确的参数？

发布于 2025-01-28 15:18:01 字数 763 浏览 4 评论 0原文

在Rails Console我编写类似的内容时： city.human_attribute_name（“模型”）它的工作正常，返回值，但是当我尝试在.haml中使用它时有错误。

= select_tag("select_tag", options_from_collection_for_select(@searchesForSelectTag, "name", 'human_attribute_name("model")', params[:select_tag]), {:include_blank => ' '})

nomethoderror：未定义的方法`human_attribute_name（“ model”）'for＃＆lt; class：0x00007fdb90dddd1198＆gt;你的意思？ human_attribute_name

@searchesforselecttag - 这是类名称的数组（例如用户，城市，汽车...）。

当我只尝试这样的尝试时：“ human_attribute_name”我有参数： 错误的参数数（给定0，预期1..2）

如何将参数“模型”添加到方法humy_attribute_name_name in options_from_collection_for_select中？

原文

In Rails console when I write Something like:
City.human_attribute_name("model") it's work correctly, a return value, but when I try to use it in .haml in Options_from_collection_for_select I have error.

= select_tag("select_tag", options_from_collection_for_select(@searchesForSelectTag, "name", 'human_attribute_name("model")', params[:select_tag]), {:include_blank => ' '})

NoMethodError: undefined method `human_attribute_name("model")' for #<Class:0x00007fdb90dd1198> Did you mean? human_attribute_name

@searchesForSelectTag - this is array of classes name (eg. User, City, Car...).

When I try like only that : "human_attribute_name" I have ArgumentError:
wrong number of arguments (given 0, expected 1..2)

How can I add argument "model" to method human_attribute_name in Options_from_collection_for_select ?

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相思故 2025-02-04 15:18:01

您可以在类上传递一个方法调用，而不是字符串：

= select_tag("select_tag", options_from_collection_for_select(@searchesForSelectTag, "name", City.human_attribute_name("model"), params[:select_tag]), {:include_blank => ' '})

更新

我找到了另一个带有动态类的解决方案。您可以尝试对此进行一些尝试。

<%= select_tag("select_tag", options_for_select(@searchesForSelectTag.map { |item| [item.name, item.class.human_attribute_name("model")] }, params[:select_tag]), {:include_blank => ' '}) %>

Instead of a string, you can pass a method call on a class:

= select_tag("select_tag", options_from_collection_for_select(@searchesForSelectTag, "name", City.human_attribute_name("model"), params[:select_tag]), {:include_blank => ' '})

Update

I found another solution with dynamic classes. You can try to experiment something with this.

<%= select_tag("select_tag", options_for_select(@searchesForSelectTag.map { |item| [item.name, item.class.human_attribute_name("model")] }, params[:select_tag]), {:include_blank => ' '}) %>

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