File upload field causing ActionController::InvalidAuthenticityToken exception

ruby-on-rails paperclip simple-form
croceldon picture croceldon · Sep 3, 2013 · Viewed 9k times · Source

Using rails 4, and trying to add a file field to an existing form, using simple_form and paperclip.

Here's the critical part of the form:

<%= simple_form_for(@employee, html: { class: 'form-horizontal requires', multipart: true}, remote: true) do |f| %>

    <%= f.input :avatar %>

<% end %>

Everything works ok, unless I actually submit the form with an uploaded file. Then, I get this:

ActionController::InvalidAuthenticityToken in EmployeesController#update

What am I doing wrong here?

Answer

William Weckl picture William Weckl · Jan 9, 2014

I was with the same problem. <%= token_tag form_authenticity_token %> didn't work for me.

Install gem remotipart solved my problem. remotipart

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