Question

我有一个＆＃34; grouped_collection_select＆＃34;对于＆＃34;分支＆＃34;领域，与一个＆＃34;行业＆＃34;领域。 Sector has_many分支和分支belongs_to sector：

<%= f.grouped_collection_select(:branch, current_user.company.sectors.order(:sector), :branches, :sector, :id, :branch, include_blank: true) %>

这有效，但是＆＃34 ;:分支＆＃34;显示所有分支，并且应该只显示current_user.company的分支，就像sectord一样。但是当我改变＆＃34 ;:分支＆＃34;进入＆＃34; current_user.company.branches.order（：branch）＆＃34;，我收到错误：

(eval):1: syntax error, unexpected $end group.#<ActiveRecord

我在这里做错了什么？谢谢！

Answer 1

为了清晰（和语义），在控制器中设置该集合以在视图中使用：

 @sectors = current_user.company.sectors.order(:sector)

...或者如果您想限制用户为每个扇区显示的分支，您可能希望根据用户的分支构建集合。一个例子：

 @sectors = current_user.company.branches.collect{|b| b.sector}.uniq

然后假设您要设置branch_id并且扇区具有name属性并且该分支具有name属性，这应该有效：

 <%= f.grouped_collection_select(:branch_id, @sectors, :branches, :name, :id, :name, :include_blank=>true)

 #:branch_id is the attribute you will be setting on the form_builder's object.
 #@sectors is the collection of objects for the groups.
 #:branches is the method that will be called on each sector object.
 #:name is the method that will be called on each sector object to label the group.
 #:id is the method that will be called on each branch to set the option's value.
 #:name is the method that will be called on each branch to set the option's label.

grouped_collection_select返回错误

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