@loopback/repository
Version:
Define and implement a common set of interfaces for interacting with databases
73 lines • 4.05 kB
JavaScript
;
// Copyright IBM Corp. and LoopBack contributors 2018,2020. All Rights Reserved.
// Node module: @loopback/repository
// This file is licensed under the MIT License.
// License text available at https://opensource.org/licenses/MIT
Object.defineProperty(exports, "__esModule", { value: true });
exports.referencesMany = void 0;
const core_1 = require("@loopback/core");
const decorators_1 = require("../../decorators");
const relation_decorator_1 = require("../relation.decorator");
const relation_types_1 = require("../relation.types");
/**
* Decorator for referencesMany
* @param targetResolver - A resolver function that returns the target model for
* a referencesMany relation
* @param definition - Optional metadata for setting up a referencesMany relation
* @param propertyDefinition - Optional metadata for setting up the property
* @returns A property decorator
*/
function referencesMany(targetResolver, definition, propertyDefinition) {
return function (decoratedTarget, decoratedKey) {
var _a, _b, _c;
const propType = (_a = core_1.MetadataInspector.getDesignTypeForProperty(decoratedTarget, decoratedKey)) !== null && _a !== void 0 ? _a : propertyDefinition === null || propertyDefinition === void 0 ? void 0 : propertyDefinition.type;
if (!propType) {
const fullPropName = core_1.DecoratorFactory.getTargetName(decoratedTarget, decoratedKey);
throw new Error(`Cannot infer type of model property ${fullPropName} because ` +
'TypeScript compiler option `emitDecoratorMetadata` is not set. ' +
'Please enable `emitDecoratorMetadata` or use the third argument of ' +
'`@referencesMany` decorator to specify the property type explicitly.');
}
const sourceKeyType = core_1.MetadataInspector.getDesignTypeForProperty(targetResolver().prototype, (_b = definition === null || definition === void 0 ? void 0 : definition.keyTo) !== null && _b !== void 0 ? _b : 'id');
if (!sourceKeyType) {
const fullPropName = core_1.DecoratorFactory.getTargetName(targetResolver().prototype, (_c = definition === null || definition === void 0 ? void 0 : definition.keyTo) !== null && _c !== void 0 ? _c : 'id');
throw new Error(`Cannot infer type of model property ${fullPropName} because ` +
'TypeScript compiler option `emitDecoratorMetadata` is not set. ' +
'Please enable `emitDecoratorMetadata` or use the second argument of ' +
'`@referencesMany` decorator to specify the property type explicitly.');
}
const propMeta = Object.assign({},
// properties provided by the caller
propertyDefinition,
// properties enforced by the decorator
{
type: propType,
itemType: sourceKeyType,
// TODO(bajtos) Make the foreign key required once our REST API layer
// allows controller methods to exclude required properties
// required: true,
});
(0, decorators_1.property)(propMeta)(decoratedTarget, decoratedKey);
// @referencesMany() is typically decorating the foreign key property,
// e.g. customerIds. We need to strip the trailing "Ids" suffix from the name.
const relationName = decoratedKey.replace(/Ids$/, 's');
const meta = Object.assign(
// default values, can be customized by the caller
{
keyFrom: decoratedKey,
name: relationName,
},
// properties provided by the caller
definition,
// properties enforced by the decorator
{
type: relation_types_1.RelationType.referencesMany,
targetsMany: true,
source: decoratedTarget.constructor,
target: targetResolver,
});
(0, relation_decorator_1.relation)(meta)(decoratedTarget, decoratedKey);
};
}
exports.referencesMany = referencesMany;
//# sourceMappingURL=references-many.decorator.js.map