嵌套散列中的 Form_tag 参数 [英] Form_tag parameters in nested hash

问题描述

我有一个没有关联模型的表单，所以我使用的是 form_tag 而不是 form_for.正如预期的那样，当用户提交表单时，每个字段都包含在 params 哈希中.但是表单会发生很大变化，我更希望在 params 哈希中包含一个哈希，以保存所有表单字段值，这样我就不必每次更改表单时都更改控制器.

I have a form that doesn't have a model associated with it, so I'm using form_tag rather than form_for. As expected, when the user submits the form each of the fields is included in the params hash. But the form will change a lot and I would prefer to have a hash within the params hash that will hold all of the form field values so that I don't have to change my controller every time I change my form.

有没有办法像 form_for 那样将表单字段值放入嵌套散列中?我希望能够通过执行诸如 params[:form_fields].to_json

Is there a way to put the form field values into a nested hash like form_for does? I'd like to be able to take all of the form fields and convert them to json by doing something like params[:form_fields].to_json

推荐答案

您可以使用 fields_for 位于 form_tag 中，用于表达命名空间的更正式方式.

You can use fields_for inside a form_tag for a more formal way of expressing a namespace.

fields_for :form_fields do |ff|
  ff.text_field :my_text_field
  ff.select :my_select_tag
end

或者只是命名所有表单输入，例如:

Alternatively just namespace all your form inputs, as such:

text_field_tag "form_fields[my_text_field]"
select_tag "form_fields[my_select_tag]" ...

等等.然后你会得到 params[:form_fields] = {:my_text_field =>"foo", :my_select_tag =>bar"}，我认为这是您想要的.

etc. Then you will get params[:form_fields] = {:my_text_field => "foo", :my_select_tag => "bar"}, which I think is what you wanted.

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