ruby on rails - How to build a form that on submit sends back a file to the end user -


i'm building form on submit needs send user file download.

my form:

<form method="get" action="/data_export" class="form-horizontal">     <input id="user_current_password" type="password" class="input" name="user[current_password]">     <button class="btn btn-primary" type="submit">download</button> </form>

controller:

  def index         send_data group.to_csv(@groups),                   :type => 'text/csv; charset=utf-8; header=present',                    :disposition => "attachment; filename=groups.csv"   end

the problem when submitting form, page redirects page text. not trigger download of file. how can form submit cause file download?

thanks


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