Belonging models not saving individually


#1

Hi, I have some Page model that has_many Photos, I am using Paperclip
for doing the file processing for the photos and I am following the Ryan
Bates (Advanced Rails Recipes) recipe for handling multiple belonging
models and parent model in a single form (wich i implemented into a gem)
so I can dynamically add and remove photos.

Ok, the problem is when creating a Page and validation fails: the user
has to upload all the files again. I thought of saving the photos
without validation when creating a Page so Paperclip does it’s job, I
would have a bg task to delete orphan Photos:

class Page < ActiveRecord::Base
accepts_multiple :photos, :dependent => :destroy #this method comes
from my
#gem implementation of the Ryan B.
recipe

validates_associated :photos
validates_presence_of :title, :content

after_validation_on_create :save_attachments

def save_attachments
unless self.errors.empty?
self.photos.each{ |photo| photo.save( false ) }
end
end
end

The problem is that the Photos don’t get saved in the database although
they return false for #new_record? and Paperclip saves the files, if I
set a debugger here:

def create
@page = Page.new(params[:page])

if @page.save
  ...
else
  debugger
  render :action => "new"
end

end

and play with the irb:

@planta.fotos.first
=> #<Photo id: 1, page_id: nil…

@planta.fotos.first.new_record?
=> false

Photo.count
=> 0

Photo.find( 1 )
=> ActiveRecord::RecordNotFound Exception: Couldn’t find Photo with ID=1

@planta.fotos.first.save( false )
=> true

Photo.count
=> 0

This is most annoying and strange, it should be saved!!!

In the log it appears as it has ben written to db:
Photo Create (0.8ms) INSERT INTO “photos” (“updated_at”…

Is there any kind of transaction or caching involved? Can I override
this behavior?
Please help!!


#2

Macario O. wrote:

  debugger

Photo.count

In the log it appears as it has ben written to db:
Photo Create (0.8ms) INSERT INTO “photos” (“updated_at”…

Is there any kind of transaction or caching involved? Can I override
this behavior?

Rails automatically wraps saves in transactions, but does not
reset the ids of successful saves within a rolled-back save,
even though those saves will themselves be rolled-back.

You’ll have to do something like

@page.save_without_transactions

or save your photos outside the page save.


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