Module: Mongo::Model::AttachmentsHelper

Defined in:
lib/kit/models/attachments_helper.rb

Defined Under Namespace

Modules: ClassMethods Classes: FileHelper

Instance Method Summary collapse

Instance Method Details

#get_attachments(association_name, field_name) ⇒ Object 



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# File 'lib/kit/models/attachments_helper.rb', line 25

def get_attachments association_name, field_name
  send(association_name).
    sort{|a, b| a.send(field_name).file.name <=> b.send(field_name).file.name}.
    collect{|o| {name: o.send(field_name).file.name, url: o.send(field_name).url}.to_openobject}
end

#set_attachments(association_name, field_name, values, &block) ⇒ Object 



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# File 'lib/kit/models/attachments_helper.rb', line 31

def set_attachments association_name, field_name, values, &block
  association = send(association_name)
  existing_names = association.collect{|o| o.send(field_name).file.name}.sort

  add = values.select do |o|
    h = FileHelper.new o
    h.file? and !existing_names.include?(h.name)
  end
  update = values.select do |o|
    h = FileHelper.new o
    h.file? and existing_names.include?(h.name)
  end
  remove = association.select do |model|
    values.none? do |o|
      h = FileHelper.new o
      model.send(field_name).name == h.name
    end
  end

  add.each do |file|
    model = block.call
    model._parent = self
    model.send "#{field_name}=", file
    association << model
  end
  update.each do |file|
    h = FileHelper.new file
    association.each do |model|
      if model.send(field_name).file.name == h.name
        model.send "#{field_name}=", file
        break
      end
    end
  end
  remove.each do |model|
    association.delete model
    # association.where(_id: model._id).destroy_all
  end
end