options_from_collection_for_select犯規接受哈希作爲參數

Question

我有一個options_from_collection_for_select看起來像這樣一個select_tag：

<%= select_tag "dash_select", options_from_collection_for_select(session[:user_hotel_list], "id", "name") %> 

我的變量會話[：user_hotel_list]是哈希值的集合看起來是這樣的：

[{"id"=>31, "name"=>"Plaze", "contact_mail"=>"plaze@gmail.com", "contact_phone"=>"+33666027414", "address"=>"JDJDJ", "postcode"=>"92200", "city"=>"JDJDJ", "nb_room"=>nil, "created_at"=>"2016-02-26T12:12:39.214Z", "updated_at"=>"2016-02-26T12:12:39.214Z", "auditor_id"=>nil, "account_id"=>48}, {"id"=>30, "name"=>"dndjd", "contact_mail"=>"djdj@gmail.com", "contact_phone"=>"+33666027414", "address"=>"k", "postcode"=>"92200", "city"=>"kk", "nb_room"=>nil, "created_at"=>"2016-02-25T22:27:47.035Z", "updated_at"=>"2016-02-25T22:27:47.035Z", "auditor_id"=>nil, "account_id"=>48}] 

不幸的是我得到undefined method名」爲＃`

如何將我的對象轉換爲structu那是被接受的軌道options_from_collection_for_select？

Answer 1

您可以使用options_for_select和#collect使這更容易一點。

<%= select_tag "dash_select", options_for_select(session[:user_hotel_list].collect{|h| [h['name'], h['id']]}) %> 

這應該讓你找到你想要的東西，並希望爲你節省一些時間！

答案取自How to populate a select_tag with an array of hashes?。