Contents

module ActiveMetadata::Persistence::ActiveRecord::Attachment

  def self.included(receiver)
    receiver.send :include, InstanceMethods
  end

  module InstanceMethods

    def save_attachment_for(field, file)      
      attachment = Attachment.create! :document_id => metadata_id, :label => field, :attach => file, :created_by => current_user_id       
      reload_attachments_cache_for field 
      self.send(:send_notification, field, "", attachment.attach.original_filename, :attachment_message, current_user_id)
    end

    def attachments_for(field)
      Rails.cache.fetch(attachments_cache_key(field), :expires_in => ActiveMetadata::CONFIG['cache_expires_in'].minutes) do
        fetch_attachments_for field   
      end  
    end

    def delete_attachment_for(field,id)
      a = Attachment.find(id)
      filename = a.attach.original_filename
      a.destroy      
      reload_attachments_cache_for field 
      self.send(:send_notification, field, filename, "", :attachment_message)
    end

    def update_attachment_for(field, id, newfile)
      a = Attachment.find(id)
      old_filename = a.attach.original_filename
      a.attach = newfile
      a.updated_by = current_user_id
      a.save                                            
      new_filename = a.attach.original_filename

      reload_attachments_cache_for field       
      self.send(:send_notification, field, old_filename, new_filename, :attachment_message, current_user_id)
    end

    def has_attachments_for field
      attachments_for(field).size == 0 ? false : true
    end
    
    private
    
    def reload_attachments_cache_for field
      Rails.cache.write(attachments_cache_key(field),fetch_attachments_for(field), :expires_in => ActiveMetadata::CONFIG['cache_expires_in'].minutes )     
    end  
    
    def fetch_attachments_for field
      Attachment.all(:conditions => {:document_id => metadata_id,:label => field}, :order => "attach_updated_at DESC")
    end  
    

  end

end

Version data entries

7 entries across 7 versions & 1 rubygems

Version	Path
active_metadata-0.3.2	lib/active_metadata/persistence/active_record/attachment.rb
active_metadata-0.3.1	lib/active_metadata/persistence/active_record/attachment.rb
active_metadata-0.3.0	lib/active_metadata/persistence/active_record/attachment.rb
active_metadata-0.2.4	lib/active_metadata/persistence/active_record/attachment.rb
active_metadata-0.2.3	lib/active_metadata/persistence/active_record/attachment.rb
active_metadata-0.2.2	lib/active_metadata/persistence/active_record/attachment.rb
active_metadata-0.2.1	lib/active_metadata/persistence/active_record/attachment.rb