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atLeastOneDefined.ts
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atLeastOneDefined.ts
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/*
* Copyright 2021 Byndyusoft
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import {
registerDecorator,
ValidationArguments,
ValidationOptions,
} from "class-validator";
import _ from "lodash";
export function AtLeastOneDefined<T>(
properties?: Array<Extract<keyof T, string>>,
validationOptions?: Omit<ValidationOptions, "each">,
): PropertyDecorator {
return function (target, propertyName): void {
registerDecorator({
name: "atLeastOneDefined",
target: target.constructor,
propertyName: propertyName as string,
constraints: properties,
options: validationOptions,
validator: {
validate(_value: unknown, args: ValidationArguments) {
const constraints = args.constraints as string[] | undefined;
if (_.isNil(constraints) || constraints.length === 0) {
return !_.isEmpty(args.object);
}
return constraints.some(
(key) =>
(args.object as Record<string, unknown>)[key] !== undefined,
);
},
defaultMessage(args: ValidationArguments): string {
const constraints = args.constraints as string[] | undefined;
return _.isNil(constraints) || constraints.length === 0
? "at least one property in $target must be defined"
: `at least one property in $target of ${constraints
.map((x) => `'${x}'`)
.join(", ")} must be defined`;
},
},
});
};
}