c280b3a29b
Refactored basic directory structure. Moved to ActiveSupport for Validations and Callbacks. Cleaned up older code, and removed support for text property types.
74 lines
2.5 KiB
Ruby
74 lines
2.5 KiB
Ruby
module CouchRest
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module Model
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module ExtendedAttachments
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# Add a file attachment to the current document. Expects
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# :file and :name to be included in the arguments.
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def create_attachment(args={})
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raise ArgumentError unless args[:file] && args[:name]
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return if has_attachment?(args[:name])
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self['_attachments'] ||= {}
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set_attachment_attr(args)
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rescue ArgumentError => e
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raise ArgumentError, 'You must specify :file and :name'
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end
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# reads the data from an attachment
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def read_attachment(attachment_name)
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database.fetch_attachment(self, attachment_name)
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end
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# modifies a file attachment on the current doc
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def update_attachment(args={})
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raise ArgumentError unless args[:file] && args[:name]
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return unless has_attachment?(args[:name])
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delete_attachment(args[:name])
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set_attachment_attr(args)
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rescue ArgumentError => e
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raise ArgumentError, 'You must specify :file and :name'
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end
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# deletes a file attachment from the current doc
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def delete_attachment(attachment_name)
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return unless self['_attachments']
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self['_attachments'].delete attachment_name
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end
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# returns true if attachment_name exists
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def has_attachment?(attachment_name)
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!!(self['_attachments'] && self['_attachments'][attachment_name] && !self['_attachments'][attachment_name].empty?)
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end
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# returns URL to fetch the attachment from
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def attachment_url(attachment_name)
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return unless has_attachment?(attachment_name)
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"#{database.root}/#{self.id}/#{attachment_name}"
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end
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# returns URI to fetch the attachment from
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def attachment_uri(attachment_name)
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return unless has_attachment?(attachment_name)
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"#{database.uri}/#{self.id}/#{attachment_name}"
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end
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private
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def get_mime_type(path)
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return nil if path.nil?
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type = ::MIME::Types.type_for(path)
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type.empty? ? nil : type.first.content_type
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end
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def set_attachment_attr(args)
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content_type = args[:content_type] ? args[:content_type] : get_mime_type(args[:file].path)
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content_type ||= (get_mime_type(args[:name]) || 'text/plain')
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self['_attachments'][args[:name]] = {
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'content_type' => content_type,
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'data' => args[:file].read
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}
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end
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end # module ExtendedAttachments
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end
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end
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