Module: Sequel::Plugins::JsonSerializer::ClassMethods

Defined in:
lib/sequel/plugins/json_serializer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#json_serializer_optsObject (readonly)

The default opts to use when serializing model objects to JSON.


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# File 'lib/sequel/plugins/json_serializer.rb', line 154

def json_serializer_opts
  @json_serializer_opts
end

Instance Method Details

#array_from_json(json, opts = OPTS) ⇒ Object

Attempt to parse an array of instances from the given JSON string, with options passed to InstanceMethods#from_json_node.


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# File 'lib/sequel/plugins/json_serializer.rb', line 181

def array_from_json(json, opts=OPTS)
  v = Sequel.parse_json(json)
  if v.is_a?(Array)
    raise(Error, 'parsed json returned an array containing non-hashes') unless v.all?{|ve| ve.is_a?(Hash) || ve.is_a?(self)}
    v.map{|ve| ve.is_a?(self) ? ve : new.from_json_node(ve, opts)}
  else
    raise(Error, 'parsed json did not return an array')
  end
end

#freezeObject

Freeze json serializier opts when freezing model class


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# File 'lib/sequel/plugins/json_serializer.rb', line 157

def freeze
  @json_serializer_opts.freeze.each_value do |v|
    v.freeze if v.is_a?(Array) || v.is_a?(Hash)
  end

  super
end

#from_json(json, opts = OPTS) ⇒ Object

Attempt to parse a single instance from the given JSON string, with options passed to InstanceMethods#from_json_node.


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# File 'lib/sequel/plugins/json_serializer.rb', line 167

def from_json(json, opts=OPTS)
  v = Sequel.parse_json(json)
  case v
  when self
    v
  when Hash
    new.from_json_node(v, opts)
  else
    raise Error, "parsed json doesn't return a hash or instance of #{self}"
  end
end