Class: GraphQL::CollectionEdge

Inherits:
Object
  • Object
show all
Defined in:
lib/graphql/collection_edge.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(items:, edge_class:) ⇒ CollectionEdge 



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# File 'lib/graphql/collection_edge.rb', line 4

def initialize(items:, edge_class:)
  @items = items
  @edge_class = edge_class
end

Instance Attribute Details

#calls ⇒ Object

Returns the value of attribute calls.



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# File 'lib/graphql/collection_edge.rb', line 2

def calls
  @calls
end

#edge_class ⇒ Object

Returns the value of attribute edge_class.



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# File 'lib/graphql/collection_edge.rb', line 2

def edge_class
  @edge_class
end

#fields ⇒ Object

Returns the value of attribute fields.



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# File 'lib/graphql/collection_edge.rb', line 2

def fields
  @fields
end

Instance Method Details

#apply_calls(unfiltered_items, call_hash) ⇒ Object 



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# File 'lib/graphql/collection_edge.rb', line 26

def apply_calls(unfiltered_items, call_hash)
  # override this to apply calls to your items
  unfiltered_items
end

#count ⇒ Object 



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# File 'lib/graphql/collection_edge.rb', line 22

def count
  @items.count
end

#edges(fields:) ⇒ Object 



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# File 'lib/graphql/collection_edge.rb', line 31

def edges(fields:)
  filtered_items = apply_calls(items, calls)
  filtered_items.map do |item|
    node = edge_class.new(item)
    json = {}
    fields.each do |field|
      name = field.identifier
      if name == "node" # it's magic
        node.fields = field.fields
        json[name] = node.to_json
      else
        json[name] = node.safe_send(name)
      end
    end
    json
  end
end

#safe_send(identifier) ⇒ Object 



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# File 'lib/graphql/collection_edge.rb', line 49

def safe_send(identifier)
  if respond_to?(identifier)
    public_send(identifier)
  else
    raise GraphQL::FieldNotDefinedError, "#{self.class.name}##{identifier} was requested, but it isn't defined."
  end
end

#to_json ⇒ Object 



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# File 'lib/graphql/collection_edge.rb', line 9

def to_json
  json = {}
  fields.each do |field|
    name = field.identifier
    if name == "edges"
      json["edges"] = edges(fields: field.fields)
    else
      json[name] = safe_send(name)
    end
  end
  json
end