Class: GraphitiGql::ActiveResource::Proxy

Inherits:
Object
  • Object
show all
Defined in:
lib/graphiti_gql/active_resource.rb

Instance Method Summary collapse

Constructor Details

#initialize(resource, params, ctx, query, options = {}) ⇒ Proxy

Returns a new instance of Proxy.



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# File 'lib/graphiti_gql/active_resource.rb', line 58

def initialize(resource, params, ctx, query, options = {})
  @query = query
  @resource = resource
  @ctx = ctx
  @params = params.deep_transform_keys { |key| key.to_s.camelize(:lower).to_sym }
  (@params[:sort] || []).each do |sort|
    sort[:att] = sort[:att].to_s.camelize(:lower)
    sort[:dir] = sort[:dir].to_s
  end
  @with_pagination = !!options[:with_pagination]
end

Instance Method Details

#data ⇒ Object 



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# File 'lib/graphiti_gql/active_resource.rb', line 101

def data
  if response.key?(:data)
    response[:data]
  else
    raise "Tried to access 'data', but these errors were returned instead: #{error_messages.join(". ")}."
  end
end

#edges ⇒ Object 



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# File 'lib/graphiti_gql/active_resource.rb', line 117

def edges
  data[data.keys.first][:edges]
end

#error_messages ⇒ Object 



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# File 'lib/graphiti_gql/active_resource.rb', line 113

def error_messages
  response[:errors].map { |e| e[:message] }
end

#errors ⇒ Object 



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# File 'lib/graphiti_gql/active_resource.rb', line 109

def errors
  response[:errors]
end

#node(id = nil) ⇒ Object 



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# File 'lib/graphiti_gql/active_resource.rb', line 77

def node(id = nil)
  if @resource.singular
    data # fire query
    Node.new(underscore(data[data.keys.first]), @resource)
  else
    nodes.find { |n| n.id == id.to_s || n.id == @resource.gid(id) }
  end
end

#nodes ⇒ Object Also known as: to_a 



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# File 'lib/graphiti_gql/active_resource.rb', line 86

def nodes
  return [] unless data
  elements = if edges
    edges.map { |e| e[:node] }
  else
    data[data.keys.first][:nodes] || []
  end
  elements.compact.map { |n| Node.new(underscore(n), @resource) }
end

#page_info ⇒ Object 



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# File 'lib/graphiti_gql/active_resource.rb', line 125

def page_info
  underscore(data[data.keys.first][:pageInfo])
end

#query ⇒ Object

barf



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# File 'lib/graphiti_gql/active_resource.rb', line 130

def query
  return @query if @query

  name = Schema.registry.key_for(@resource)
  sortvar = "$sort: [#{name}Sort!]," if @resource.sorts.any?
  filter_bang = "!" if @resource.grouped_filters.any? || @resource.filters.values.any? { |f| f[:required] }
  filtervar = "$filter: #{name}Filter#{filter_bang}," if @resource.filters.any?

  if !(fields = @params[:fields])
    fields = []
    @resource.attributes.each_pair do |name, config|
      (fields << name) if config[:readable]
    end
  end

  q = %|
    query #{name} (
      #{filtervar}
      #{sortvar}
      $first: Int,
      $last: Int,
      $before: String,
      $after: String,
    ) {
      #{@resource.graphql_entrypoint} (
        #{ 'filter: $filter,' if filtervar }
        #{ 'sort: $sort,' if sortvar }
        first: $first,
        last: $last,
        before: $before,
        after: $after,
      ) {
        edges {
          node {|

  fields.each do |name|
    next if name.is_a?(Hash)
    q << %|
            #{name.to_s.camelize(:lower)}|
  end

  if @params[:include]
    includes = Array(@params[:include])
    # NB HASH (?)
    includes.each do |inc|
      sideload = @resource.sideload(inc.to_sym)
      if sideload.nil?
        raise "Passed option \"include: #{inc}\" but #{@resource} does not have an association with that name!"
      end
      to_one = [:belongs_to, :has_one, :polymorphic_belongs_to].include?(sideload.type)
      indent = "    " if !to_one

      edge_fields = []
      runtime_sideload_fields = @params[:fields].find { |f| f.is_a?(Hash) && f.key?(inc.to_sym) }
      if runtime_sideload_fields
        runtime_sideload_fields = runtime_sideload_fields.values
        edge_fields = runtime_sideload_fields.find { |f| f.is_a?(Hash) && f.key?(:edge) }
        runtime_sideload_fields = runtime_sideload_fields.reject { |f| f.is_a?(Hash) }
        edge_fields = edge_fields[:edge] if edge_fields
      end

      q << %|
            #{inc.to_s.camelize(:lower)} {|
      if !to_one
        q << %|
              edges {|

        edge_fields.each do |ef|
          q << %|
                #{ef.to_s.camelize(:lower)}|
        end

        q << %|
                node {|
      end

      sideload_fields = runtime_sideload_fields
      if sideload_fields.blank?
        sideload_fields = @resource.sideload(inc.to_sym).resource.attributes.select { |_, config| config[:readable] }.map(&:first)
      end
      sideload_fields = sideload_fields.map { |sf| sf.to_s.camelize(:lower) }
      sideload_fields |= [:__typename]
      sideload_fields.each do |name|
        q << %|
              #{indent}#{name}|
      end

      if to_one
        q << %|
            }|
      else
        q << %|
                }
              }
            }|
      end
    end
  end

    q << %|
            }
          }|
  if @with_pagination
    q << %|
          pageInfo {
            startCursor
            endCursor
            hasNextPage
            hasPreviousPage
          }|
  end

  if @params[:stats]
    q << %|
        stats {|
    @params[:stats].each_pair do |name, calculations|
      q << %|
          #{name.to_s.camelize(:lower)} {|
      Array(calculations).each do |calc|
        q << %|
            #{calc.to_s.camelize(:lower)}|
      end

      q << %|
          }|
    end
    q << %|
        }|
  end

  q << %|
      }
    }
  |

  q
end

#response ⇒ Object 



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# File 'lib/graphiti_gql/active_resource.rb', line 97

def response
  @response ||= run!
end

#run!(symbolize_keys: true) ⇒ Object 



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# File 'lib/graphiti_gql/active_resource.rb', line 70

def run!(symbolize_keys: true)
  result = GraphitiGql.run(query, @params, @ctx)
  result = result.deep_symbolize_keys if symbolize_keys
  @response = result
  result
end

#stats ⇒ Object 



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# File 'lib/graphiti_gql/active_resource.rb', line 121

def stats
  underscore(data[data.keys.first][:stats])
end