Class: Versionable::Image

Inherits:
Object
  • Object
show all
Defined in:
lib/versionable/image.rb

Defined Under Namespace

Classes: InvalidMetadata

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(model, column, &blk) ⇒ Image

Returns a new instance of Image.



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# File 'lib/versionable/image.rb', line 7

def initialize(model, column, &blk)
  @model = model
  @column = column
  @versions = {}

  instance_eval(&blk) if block_given?
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &blk) ⇒ Object (private) 



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# File 'lib/versionable/image.rb', line 57

def method_missing(name, *args, &blk)
  if versions.respond_to?(:key?) && versions.key?(name)
    versions[name]
  else
    super
  end
end

Instance Attribute Details

#height ⇒ Object (readonly)

Returns the value of attribute height.



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# File 'lib/versionable/image.rb', line 6

def height
  @height
end

#width ⇒ Object (readonly)

Returns the value of attribute width.



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# File 'lib/versionable/image.rb', line 6

def width
  @width
end

Instance Method Details

#as_json(_options = nil) ⇒ Object 



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# File 'lib/versionable/image.rb', line 27

def as_json(_options = nil)
  serializable_hash
end

#fetch_metadata ⇒ Object 



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# File 'lib/versionable/image.rb', line 31

def fetch_metadata
  metadata_url = URI.parse(Versionable::Version.new(self, meta: true).url)
  json_data = Net::HTTP.get(metadata_url)
  blank?(json_data) ? nil : JSON.parse(Net::HTTP.get(metadata_url))
end

#height_from_metadata(hash) ⇒ Object 



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# File 'lib/versionable/image.rb', line 37

def height_from_metadata(hash)
  @height = hash['thumbor']['source']['height']
rescue
  raise InvalidMetadata,
        'Argument is not valid thumbor metadata. " +
        "Use #fetch_metadata to get it.'
end

#respond_to?(method, include_private = false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/versionable/image.rb', line 19

def respond_to?(method, include_private = false)
  super || @versions.key?(method)
end

#to_json(_options = nil) ⇒ Object 



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# File 'lib/versionable/image.rb', line 23

def to_json(_options = nil)
  JSON.generate(as_json)
end

#url ⇒ Object 



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# File 'lib/versionable/image.rb', line 15

def url
  model.send(column)
end

#width_from_metadata(hash) ⇒ Object 



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# File 'lib/versionable/image.rb', line 45

def width_from_metadata(hash)
  @width = hash['thumbor']['source']['width']
rescue
  raise InvalidMetadata,
        'Argument is not valid thumbor metadata. " +
        "Use #fetch_metadata to get it.'
end