Associating a default paperclip image from a different model

rubyonrails-talk
1

Here's some code, this is my NewsItem model as you can see...

class NewsItem < ActiveRecord::Base   belongs_to :country   has_attached_file :image, :styles => { :original => '57x57' }, :default_url => '/images/football.png'

  # has_attached_file :image,   # :styles => { :original => '57x57' },   # :default_url => self.country.flag.url

  validates_attachment_content_type :image, :content_type => ['image/png'], :message => "only pngs are allowed."   validates_presence_of :title   validates_length_of :title, :within => 3..50   validates_presence_of :url end

I have a Country model also which has a flag (paperclip attached image)...What I'd like to do is make the default image for the NewsItem be the Country flag? My commented out code shows my unsuccessful attempt, I believe it's along those lines, but not what I have!

2

What was the result of your code? Was it a syntax error or run time?

Colin

3

Hi Colin,

Here's the error I get with my code...

undefined method `country' for #<Class:0x10344bac0>

just to reiterate here, what i'd like to do here is set the default image (paperclipped) to be that of the "belonged_to" country...

bb.

4

Just to be clear that error is generated with this code in place...

class NewsItem < ActiveRecord::Base   belongs_to :country   # has_attached_file :image, :styles => { :original => '57x57' }, :default_url => '/images/football.png'

  has_attached_file :image,                      :styles => { :original => '57x57' },                      :default_url => self.country.flag.url

  validates_attachment_content_type :image, :content_type => ['image/png'], :message => "only pngs are allowed."   validates_presence_of :title   validates_length_of :title, :within => 3..50   validates_presence_of :url end