@loudsrl/loopback-cascade-delete-mixin
Version:
Loopback cascade delete mixin
178 lines (133 loc) • 14.2 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
var _regenerator = require('babel-runtime/regenerator');
var _regenerator2 = _interopRequireDefault(_regenerator);
var _asyncToGenerator2 = require('babel-runtime/helpers/asyncToGenerator');
var _asyncToGenerator3 = _interopRequireDefault(_asyncToGenerator2);
var _promise = require('babel-runtime/core-js/promise');
var _promise2 = _interopRequireDefault(_promise);
var _debug2 = require('./debug');
var _debug3 = _interopRequireDefault(_debug2);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var debug = (0, _debug3.default)();
var idName = function idName(m) {
return m.definition.idName() || 'id';
};
var getIdValue = function getIdValue(m, data) {
return data && data[idName(m)];
};
var cascadeDeletes = function cascadeDeletes(modelId, Model, options) {
return _promise2.default.all(options.relations.map(function () {
var _ref = (0, _asyncToGenerator3.default)( /*#__PURE__*/_regenerator2.default.mark(function _callee2(relationData) {
var relation, relationForeignKey, relationDeepDelete, relationModel, relationKey, where, instancesToDelete;
return _regenerator2.default.wrap(function _callee2$(_context2) {
while (1) {
switch (_context2.prev = _context2.next) {
case 0:
relation = void 0;
relationForeignKey = void 0;
relationDeepDelete = void 0;
if (relationData instanceof Object) {
relation = relationData.name;
relationForeignKey = relationData.foreignKey;
relationDeepDelete = relationData.deepDelete;
} else relation = relationData;
if (relation) {
_context2.next = 6;
break;
}
throw new Error('Please, set relation name! loopback-cascade-mixin');
case 6:
debug('Relation ' + relation + ' model ' + Model.definition.name);
if (Model.relations[relation]) {
_context2.next = 10;
break;
}
debug('Relation ' + relation + ' not found for model ' + Model.definition.name);
throw new Error('Relation ' + relation + ' not found for model ' + Model.definition.name);
case 10:
relationModel = Model.relations[relation].modelTo;
relationKey = relationForeignKey || Model.relations[relation].keyTo;
if (Model.relations[relation].modelThrough) {
relationModel = Model.relations[relation].modelThrough;
}
if (relationModel.definition.properties[relationKey]) {
_context2.next = 15;
break;
}
throw new Error('Bad relation key name! \n ' + Model.definition.name + ' - ' + relationModel.definition.name + ' \n loopback cascade-delete-mixin');
case 15:
where = {};
where[relationKey] = modelId;
if (!(relationDeepDelete || relationDeepDelete && options.deepDelete)) {
_context2.next = 24;
break;
}
_context2.next = 20;
return relationModel.find({ where: where });
case 20:
instancesToDelete = _context2.sent;
instancesToDelete.forEach(function () {
var _ref2 = (0, _asyncToGenerator3.default)( /*#__PURE__*/_regenerator2.default.mark(function _callee(instance) {
return _regenerator2.default.wrap(function _callee$(_context) {
while (1) {
switch (_context.prev = _context.next) {
case 0:
_context.next = 2;
return instance.destroy();
case 2:
case 'end':
return _context.stop();
}
}
}, _callee, undefined);
}));
return function (_x2) {
return _ref2.apply(this, arguments);
};
}());
_context2.next = 26;
break;
case 24:
_context2.next = 26;
return relationModel.destroyAll(where);
case 26:
case 'end':
return _context2.stop();
}
}
}, _callee2, undefined);
}));
return function (_x) {
return _ref.apply(this, arguments);
};
}()));
};
exports.default = function (Model, options) {
Model.observe('before delete', function (ctx) {
var name = idName(Model);
var hasInstanceId = ctx.instance && ctx.instance[name];
var hasWhereId = ctx.where && ctx.where[name];
var hasMixinOption = options && Array.isArray(options.relations);
if (!(hasWhereId || hasInstanceId)) {
debug('Skipping delete for ', Model.definition.name);
return _promise2.default.resolve();
}
if (!hasMixinOption) {
debug('Skipping delete for', Model.definition.name, 'Please add mixin options');
return _promise2.default.resolve();
}
var modelInstanceId = getIdValue(Model, ctx.instance || ctx.where);
return cascadeDeletes(modelInstanceId, Model, options).then(function () {
debug('Cascade delete has successfully finished');
return true;
}).catch(function (err) {
debug('Error with cascading deletes', err);
return _promise2.default.reject(err);
});
});
};
module.exports = exports['default'];
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loopback-cascade-mixin');\n    }\n\n    debug(`Relation ${relation} model ${Model.definition.name}`);\n\n    if (!Model.relations[relation]) {\n      debug(`Relation ${relation} not found for model ${Model.definition.name}`);\n      throw new Error(`Relation ${relation} not found for model ${Model.definition.name}`);\n    }\n\n\n    let relationModel = Model.relations[relation].modelTo;\n    const relationKey = relationForeignKey || Model.relations[relation].keyTo;\n\n    if (Model.relations[relation].modelThrough) {\n      relationModel = Model.relations[relation].modelThrough;\n    }\n\n    if (!relationModel.definition.properties[relationKey]) {\n      throw new Error(`Bad relation key name! \n      ${Model.definition.name} - ${relationModel.definition.name} \n      loopback cascade-delete-mixin`);\n    }\n\n\n    const where = {};\n    where[relationKey] = modelId;\n\n    if (relationDeepDelete || (relationDeepDelete && options.deepDelete)) {\n      const instancesToDelete = await relationModel.find({ where });\n\n      instancesToDelete.forEach(async (instance) => {\n        await instance.destroy();\n      });\n    } else {\n      await relationModel.destroyAll(where);\n    }\n  }));\n\nexport default (Model, options) => {\n  Model.observe('after delete', (ctx) => {\n    const name = idName(Model);\n    const hasInstanceId = ctx.instance && ctx.instance[name];\n    const hasWhereId = ctx.where && ctx.where[name];\n    const hasMixinOption = options && Array.isArray(options.relations);\n\n    if (!(hasWhereId || hasInstanceId)) {\n      debug('Skipping delete for ', Model.definition.name);\n      return Promise.resolve();\n    }\n\n    if (!hasMixinOption) {\n      debug('Skipping delete for', Model.definition.name, 'Please add mixin options');\n      return Promise.resolve();\n    }\n\n    const modelInstanceId = getIdValue(Model, ctx.instance || ctx.where);\n\n    return cascadeDeletes(modelInstanceId, Model, options)\n      .then(() => {\n        debug('Cascade delete has successfully finished');\n        return true;\n      })\n      .catch((err) => {\n        debug('Error with cascading deletes', err);\n        return Promise.reject(err);\n      });\n  });\n};\n"]}