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# File 'lib/paramore/extension.rb', line 11
def param_schema(accessor_name, parameter_configuration)
unless parameter_configuration.keys.size == 1
raise ArgumentError,
"Paramore: exactly one required attribute allowed! Given: #{parameter_configuration.keys}"
end
required_parameter_name = parameter_configuration.keys.first
types_definition = parameter_configuration.values.first
Paramore::Validate.run(types_definition) if types_definition.is_a?(Paramore::Field)
permitted_parameter_argument =
if types_definition.is_a?(Paramore::Field)
Paramore::PermittedParameterArgument.parse(types_definition)
else
types_definition
end
define_method(accessor_name) do |rails_parameters = params|
return instance_variable_get("@#{accessor_name}") if instance_variable_defined?("@#{accessor_name}")
if rails_parameters[required_parameter_name].nil? && types_definition.default
instance_variable_set("@#{accessor_name}", types_definition.default)
return instance_variable_get("@#{accessor_name}")
end
permitted_params = rails_parameters
.require(required_parameter_name)
.permit(permitted_parameter_argument)
parameter_values =
if types_definition.is_a?(Paramore::Field)
permitted_params.merge(
Paramore::CastParameters.run(types_definition, permitted_params)
).permit!
else
permitted_params.permit!
end
instance_variable_set("@#{accessor_name}", parameter_values)
end
end
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