Rails 3 remote form: How do I specify the content type?

ruby-on-rails ajax ruby-on-rails-3 forms ujs

You can set the content-type with:

= form_for(@object, :remote => true, :html => {:'data-type' => 'json'})

As described in rails.js line 106.

ruby-on-rails ajax ruby-on-rails-3 forms ujs

For Rails 5, the proper way is to set a data attribute data: { type: :json }.

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