Carrierwave upload image to postgresql table - ruby-on-rails

Question

I am trying to make an upload profile picture option for my form. I am using carrierwave to do so. While I can run the form with no problems, when I upload and save changes (i think), i check my postgres database column and see that the avatar column is still empty. The image has not been saved.
Here is my form:
<h2>Edit <%= resource_name.to_s.humanize %></h2>
<%= form_for(resource, as: resource_name, url: registration_path(resource_name), html: { method: :put , :multipart => true}) do |f| %>
<%= devise_error_messages! %>
<div><%= f.label :email %><br />
<%= f.email_field :email, autofocus: true %></div>
<% if devise_mapping.confirmable? && resource.pending_reconfirmation? %>
<div>Currently waiting confirmation for: <%= resource.unconfirmed_email %></div>
<% end %>
<div><%= f.label :password %> <i>(leave blank if you don't want to change it)</i><br />
<%= f.password_field :password, autocomplete: "off" %></div>
<div><%= f.label :password_confirmation %><br />
<%= f.password_field :password_confirmation, autocomplete: "off" %></div>
<div><%= f.label :current_password %> <i>(we need your current password to confirm your changes)</i><br />
<%= f.password_field :current_password, autocomplete: "off" %></div>
<!-- add profile picture portion -->
<div><%= f.label :avatar %><br />
<%= f.file_field :avatar %>
<div><%= f.submit "Update" %></div>
<% end %>
Here is my model:
class User < ActiveRecord::Base
# Include default devise modules. Others available are:
# :confirmable, :lockable, :timeoutable and :omniauthable
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable
mount_uploader :avatar, AvatarUploader
end
And here is my uploader:
class AvatarUploader < CarrierWave::Uploader::Base
def store_dir
"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
end
def extension_white_list
%w(jpg jpeg gif png)
end
end