loopback-extra-filters
This package is designed to provide filter alternatives under the loopback query data.
The extra filters do not change queries generated by loopback-datasource-juggler, but are applied to the resulting object.
Install
// server/boot/extra-filters.js
'use strict';
const Boot = require('loopback-extra-filters/lib/boot');
module.exports = function(server) {
Boot.apply(server);
};Filters
- has - Check if you have the property.
- notHas - Check if you do not have the property.
- isEmpty -Check if array property is empty
- isNotEmpty - Check if array property is not empty.
Examples
- Filter:
// Product has category (Ex.: relation belongsTo)
{
"include": {
"relation": "category",
},
"isHas": "category" //or ["category", ...]
}
// Product has no category (Ex.: relation belongsTo)
{
"include": {
"relation": "category",
},
"isHas": "category" //or ["category", ...]
}
// Product without items (Ex.: relation hasMany)
{
"include": {
"relation": "items",
},
"isEmpty": "items" //or ["items", ...]
}
// Product with items (Ex.: relation hasMany)
{
"include": {
"relation": "items",
},
"isNotEmpty": "items" //or ["items", ...]
}