Class: Agave::JsonApiSerializer

Inherits:
Object
  • Object
show all
Defined in:
lib/agave/json_api_serializer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(type, link) ⇒ JsonApiSerializer

Returns a new instance of JsonApiSerializer.



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# File 'lib/agave/json_api_serializer.rb', line 6

def initialize(type, link)
  @link = link
  @type = type
end

Instance Attribute Details

Returns the value of attribute link.



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# File 'lib/agave/json_api_serializer.rb', line 4

def link
  @link
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/agave/json_api_serializer.rb', line 4

def type
  @type
end

Instance Method Details

#attributes(resource) ⇒ Object 



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# File 'lib/agave/json_api_serializer.rb', line 67

def attributes(resource)
  if type == "item"
    return resource.keys.map(&:to_sym) - [
      :item_type,
      :id,
      :created_at,
      :updated_at,
      :is_valid,
      :published_version,
      :current_version
    ]
  end

  link_attributes["properties"].keys.map(&:to_sym)
end

#link_attributes ⇒ Object 



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# File 'lib/agave/json_api_serializer.rb', line 137

def link_attributes
  link.schema.properties["data"].properties["attributes"]
end

#link_relationships ⇒ Object 



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# File 'lib/agave/json_api_serializer.rb', line 141

def link_relationships
  link.schema.properties["data"].properties["relationships"]
end

#relationships ⇒ Object 



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# File 'lib/agave/json_api_serializer.rb', line 91

def relationships
  if type == "item"
    if link.rel == :create
      return { item_type: { collection: false, type: 'item_type' } }
    else
      {}
    end
  end

  if !link_relationships
    return {}
  end

  link_relationships.properties.reduce({}) do |acc, (relationship, schema)|
    is_collection = schema.properties["data"].type.first == 'array'

    definition = if is_collection
                   schema.properties['data'].items
                 elsif schema.properties['data'].type.first == 'object'
                   schema.properties['data']
                 else
                   schema.properties['data'].any_of.find do |option|
                     option.type.first == 'object'
                   end
                 end

    type = definition.properties['type']
                     .pattern.source.gsub(/(^\^|\$$)/, '')

    acc[relationship.to_sym] = {
      collection: is_collection,
      type: type,
    }

    acc
  end
end

#required_attributes ⇒ Object 



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# File 'lib/agave/json_api_serializer.rb', line 83

def required_attributes
  if type == "item"
    return []
  end

  (link_attributes.required || []).map(&:to_sym)
end

#required_relationships ⇒ Object 



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# File 'lib/agave/json_api_serializer.rb', line 129

def required_relationships
  if type == "item"
    return %i(item_type)
  end

  (link_relationships.required || []).map(&:to_sym)
end

#serialize(resource, id = nil) ⇒ Object 



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# File 'lib/agave/json_api_serializer.rb', line 11

def serialize(resource, id = nil)
  resource = resource.with_indifferent_access
  data = {}

  data[:id] = id || resource[:id] if id || resource[:id]

  data[:type] = type
  data[:attributes] = serialized_attributes(resource)

  if relationships.any?
    data[:relationships] = serialized_relationships(resource)
  end

  { data: data }
end

#serialized_attributes(resource) ⇒ Object 



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# File 'lib/agave/json_api_serializer.rb', line 27

def serialized_attributes(resource)
  result = {}

  attributes(resource).each do |attribute|
    if resource.key? attribute
      result[attribute] = resource[attribute]
    elsif required_attributes.include? attribute
      throw "Required attribute: #{attribute}"
    end
  end

  result
end

#serialized_relationships(resource) ⇒ Object 



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# File 'lib/agave/json_api_serializer.rb', line 41

def serialized_relationships(resource)
  result = {}

  relationships.each do |relationship, meta|
    if resource.key? relationship
      value = resource[relationship]

      data = if value
               if meta[:collection]
                 value.map do |id|
                   { type: meta[:type], id: id.to_s }
                 end
               else
                 { type: meta[:type], id: value.to_s }
               end
             end
      result[relationship] = { data: data }

    elsif required_relationships.include?(relationship)
      throw "Required attribute: #{relationship}"
    end
  end

  result
end