Evil

Schemas.Link = (collection) ->new SimpleSchema
  url:
    type: String
    regEx: SimpleSchema.RegEx.Url
  meta:
    type: Object
    optional:true
    autoValue: ->
      if this.isInsert
        doc_id = this.field('_id')
        Meteor.call 'simplecrawler_findMetadata', (e,r)->
          if r
            r.image = r.images[0]
            collection.update(doc_id,{$set:{meta:r}})
  'meta.description':
    type: String
    optional: true
  'meta.image_url':
    type: String
    regEx: SimpleSchema.RegEx.Url
    optional: true