forest-express-sequelize
Version:
Official Express/Sequelize Liana for Forest
51 lines (50 loc) • 1.6 kB
JavaScript
;
require("core-js/modules/es.array.iterator.js");
const _ = require('lodash');
const Operators = require('../utils/operators');
const orm = require('../utils/orm');
const {
ErrorHTTP422
} = require('./errors');
function HasManyDissociator(model, association, options, params, data) {
const OPERATORS = Operators.getInstance(options);
const isDelete = Boolean(params.delete);
this.perform = function () {
const associatedIds = _.map(data.data, function (value) {
return value.id;
});
return orm.findRecord(model, params.recordId).then(function (record) {
let removeAssociation = false;
if (isDelete) {
_.each(model.associations, function (innerAssociation, associationName) {
if (associationName === params.associationName) {
removeAssociation = innerAssociation.associationType === 'belongsToMany';
}
});
} else {
removeAssociation = true;
}
if (removeAssociation) {
return record[`remove${_.upperFirst(params.associationName)}`](associatedIds);
}
return null;
}).then(function () {
if (isDelete) {
const primaryKeys = _.keys(association.primaryKeys);
const [idField] = primaryKeys;
const condition = {
[idField]: {
[OPERATORS.IN]: associatedIds
}
};
return association.destroy({
where: condition
});
}
return null;
}).catch(function (error) {
throw new ErrorHTTP422(error.message);
});
};
}
module.exports = HasManyDissociator;