app/controllers/graphql_controller.rb
class GraphqlController < ApplicationController
def execute
variables = ensure_hash(params[:variables])
query = params[:query]
operation_name = params[:operationName]
context = {
# Query context goes here, for example:
# current_user: current_user,
}
result = SalmonRunSchema.execute(query, variables: variables, context: context, operation_name: operation_name)
render json: result
rescue StandardError => e
raise e unless Rails.env.development?
handle_error_in_development e
end
private
# Handle form data, JSON body, or a blank value
def ensure_hash(ambiguous_param)
case ambiguous_param
when String
ambiguous_param.present? ? ensure_hash(JSON.parse(ambiguous_param)) : {}
when Hash, ActionController::Parameters
ambiguous_param
when nil
{}
else
raise ArgumentError, "Unexpected parameter: #{ambiguous_param}"
end
end
def handle_error_in_development(error)
logger.error error.message
logger.error error.backtrace.join("\n")
render json: { error: { message: error.message, backtrace: error.backtrace }, data: {} }, status: :internal_server_error
end
end