62 lines
1.9 KiB
Ruby
62 lines
1.9 KiB
Ruby
class GraphqlController < ApplicationController
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attr_accessor :query_variables, :query_string
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skip_before_action :verify_authenticity_token
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skip_authorization_check
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class QueryStringError < StandardError; end
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def query
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begin
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# ------------------------------------------------------------------------
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api_types_creator = GraphQL::ApiTypesCreator.new(API_TYPE_DEFINITIONS)
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created_api_types = api_types_creator.create
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query_type_creator = GraphQL::QueryTypeCreator.new(created_api_types)
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query_type = query_type_creator.create
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consul_schema = GraphQL::Schema.define do
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query query_type
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max_depth 12
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resolve_type -> (object, ctx) do
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type_name = object.class.name # look up types by class name
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ConsulSchema.types[type_name]
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end
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end
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# ------------------------------------------------------------------------
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set_query_environment
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response = consul_schema.execute query_string, variables: query_variables
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render json: response, status: :ok
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rescue GraphqlController::QueryStringError
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render json: { message: 'Query string not present' }, status: :bad_request
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rescue GraphQL::ParseError
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render json: { message: 'Query string is not valid JSON' }, status: :bad_request
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end
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end
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private
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def set_query_environment
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set_query_string
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set_query_variables
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end
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def set_query_string
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if request.headers["CONTENT_TYPE"] == 'application/graphql'
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@query_string = request.body.string # request.body.class => StringIO
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else
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@query_string = params[:query]
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end
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if query_string.nil? then raise GraphqlController::QueryStringError end
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end
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def set_query_variables
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if params[:variables].nil?
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@query_variables = {}
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else
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@query_variables = params[:variables]
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end
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end
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end
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