Upload an image using Rails & Parse

gistfile1.rb

# Add image field to model
# fields :title, :some_image_field

# Create a form for uploading the image
<%= form_tag({ :action => :upload_image_save}, :multipart => true) do %>
  <%= file_field_tag 'image' %>

	<div class="actions">
    <%= submit_tag %>
  	</div>
<% end %>

# Create a controller method for the save
@obj = Model.find(params[:id])
image_file = params[:image]
result = Model.upload(image_file.tempfile,image_file.original_filename,content_type: image_file.content_type)
@obj.some_image_field = {"name" => result["name"], "__type" => "File"}
respond_to do |format|
    if @obj.save
      format.html { redirect_to models_path, notice: 'Image uploaded' }
    else
      format.html { redirect_to models_path, notice: 'Error uploading image' }          
    end
end

# Show the image somewhere the field is a URL to the image
<img src=<%= obj.some_image_field %>>