问题描述
我有这段代码:
= f.input :category, :as => :select, :label => false, :collection => Choices["Categories"]
Choices[Categories"] 只是键=> 值对的散列.
Choices["Categories"] is just a hash of key=>value pairs.
SimpleForm 生成一个包含所有需要选项的选择字段，但它也会将第一个选项设为空白.
该空白选项存在于 SimpleForm 生成的所有选择字段中.
SimpleForm generates a select field with all needed options, but it also makes the first option blank.
This blank option is present in all select fields that were generated by SimpleForm.
但我不想有一个空白选项.有没有办法摆脱它?
But I don't want to have a blank option. Is there a way to get rid of it?
类似于 :allow_blank_option =>错误?
我试图对该属性进行存在验证，希望 SimpleForm 能够检测到它，但没有帮助.
I tried to make a presence validation of this attribute hoping that SimpleForm will detect it, but it didn't help.
推荐答案
你可以传递一个 include_blank: false, include_hidden: false 选项:
You can pass a include_blank: false, include_hidden: false option:
= f.input :category, :as => :select, :label => false, :collection => Choices["Categories"], include_blank: false, include_hidden: false
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