Handling errors on multiple file upload

Rails
1

Hello guys,

I’ve got the following models:

class Asset < ActiveRecord::Base
end

class PropertyImage < Asset

belongs_to :property
validates_file_format_of :filename, :in => [“gif”, “png”, “jpg”]

file_column :filename, :magick => {
:versions => { “thumb” => “50x50”, “medium” => “220x280” }
}

end

class Property < ActiveRecord::Base

has_one :property_profile, :foreign_key =>
‘property_id’, :dependent => :destroy
has_many :property_images, :foreign_key => ‘fk_id’, :dependent
=> :destroy
belongs_to :property_seller
validates_associated :property_profile

end

and I have the following method in a controller:

def sell

 @property = Property.new(params[:property])
 @property_profile = @property.property_profile =

PropertyProfile.new(params[:property_profile])

 return unless request.post?
 @property.save!

 params[:property_image].each do |file_id,attr|
   file_id = file_id.to_i
   if file_id >= 1 and file_id <= 3
     image = PropertyImage.new(attr)
     unless image['filename'] == nil
       image.fk_id = @property.id
       image.title = @property_profile.title
       image.save
     end
   end

 end

 flash[:notice] = "Property saved"
 # redirect_to :action => 'list'

rescue ActiveRecord::RecordInvalid
render :action => ‘sell’
end

and the image part of my view -

<% for i in 1…3 %>

Image
" name="<%= "property_image[#{i}][filename_temp]" %>" type="hidden" /> " name="<%= "property_image[#{i}][filename]" %>" size="30" type="file" />

<% end %>

I’m trying to handle file validation - basically the user MUST upload
one image at least. Now the way it’s set out above, the property will
save, however if there’s an issue with the image (ie. it’s missing or
in the wrong format), then that property will already have been
saved. What I need to do is handle the error before saving
everything. Any suggestions how I can do this?

Thanks!

Alastair

Alastair M.
Standards compliant web development with Ruby On Rails, PHP and ASP
www.kozmo.co.uk
07738 399038