我试图提供@languages的默认选项 - '所有语言' 以下是观点:
.dropdown-search-filter
= select_tag "languages", options_from_collection_for_select(@languages, "id", "to_label", selected: params[:languages]), prompt: "All Languages"
.dropdown-search-filter.search-select-tag
= select_tag "destination", content_tag(:option,'All Destinations',:value=>"all")+options_from_collection_for_select(@destinations, "id", "name", selected: params[:destination])
它仍然将英语作为默认值:here screenshot。
我做错了什么?
答案 0 :(得分:1)
您正试图访问视图中的params,但您无法访问。创建一个像@language_id这样的实例变量,并在视图中使用它
答案 1 :(得分:0)
正如我可以在文档(link)中看到的那样:
select_tag "languages", options_from_collection_for_select(@languages, "id", "to_label", params[:languages]), prompt: "All Languages"
请注意,params[:languages]
必须是您的语言集合的有效ID,因为第四个参数(默认选择)基于选项的id(第二个参数中指定的字段)。
这对你有用吗?