Class: Document

Inherits:
ActiveRecord::Base
  • Object
show all
Includes:
SocialStream::Models::Object
Defined in:
app/models/document.rb

Direct Known Subclasses

Audio, Picture, Video

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.lookup_subtype_class(doc) ⇒ Object

Searches for the suitable class based on its mime type



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# File 'app/models/document.rb', line 40

def lookup_subtype_class(doc)
  SocialStream::Documents.subtype_classes_mime_types.each_pair do |klass, mime_types|
    return klass.to_s.classify.constantize if mime_types.include?(doc.mime_type.to_sym)
  end

  nil
end

.new(*args) ⇒ Object 



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# File 'app/models/document.rb', line 24

def new(*args)
  # If already called from subtype, continue through the stack
  return super if self.name != "Document"

  doc = super
  
  return doc if doc.file_content_type.blank?
  
  if klass = lookup_subtype_class(doc)
    return klass.new *args
  end

  doc
end

Instance Method Details

#as_json(options) ⇒ Object

JSON, generic version for most documents



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# File 'app/models/document.rb', line 65

def as_json(options)
  {
   :id => id,
   :title => title,
   :description => description,
   :author => author.name,
   :src => URI.join(options[:helper].root_url, file.url).to_s 
  }
end

#format ⇒ Object

#mime_type‘s symbol



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# File 'app/models/document.rb', line 60

def format
  mime_type.to_sym
end

#mime_type ⇒ Object

The Mime::Type of this document’s file



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# File 'app/models/document.rb', line 50

def mime_type
  Mime::Type.lookup(file_content_type)
end

#mime_type_type_sym ⇒ Object

The type part of the #mime_type



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# File 'app/models/document.rb', line 55

def mime_type_type_sym
  mime_type.to_s.split('/').first.to_sym
end