Form_for with :multipart => true spits out

Question

I am trying to add an Avatar Upload field to my Profile Page, but as soon as I add the :html => {:multipart => true} to it, it spits out an syntax error.<

Answer 1

I'm assuming that you're either using 'paperclip' or ''carrierwave' to upload images. So, try this:

<%= form_for @user, : url => users_path, :html => {:multipart => true} do |f| %>

Answer 2

http://guides.rubyonrails.org/form_helpers.html#uploading-files

It's either a form_tag helper with multipart => true or just form_for

<%= form_tag({:action => :upload}, :multipart => true) do %>
  <%= file_field_tag 'picture' %>
<% end %>

<%= form_for @person do |f| %>
  <%= f.file_field :picture %>
<% end %>

Answer 3

It should be like this:

form_for @user, :html => { :multipart => true } do |f|

The parenthesis in form_for(@user) is actually telling Ruby interpreter the function is invoked with only one parameter, and you can't pass wrong number of arguments in a method in Ruby.