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我无法添加一个类来此collection_select:我在哪里添加一个类在这个Rails的collection_select?
<%= f.collection_select :category_id, Category.all, :id, :name, {:prompt => 'Choose a category'}, {:required => true} %>
我已经试过这样:
<%= f.collection_select :category_id, Category.all, :id, :name, {:prompt => 'Choose a category'}, {:required => true}, {:class => "form_inputs"} %>
除了这一点:
<%= f.collection_select :category_id, Category.all, :id, :name, {prompt: "Choose a category"}, {required: true}, {class: "form_inputs"} %>
但无论似乎工作。是什么赋予了?