@faable/faableql
v1.4.1
Published
<p align="center"> <a href="https://faable.com"> <img width=250 src="docs/faableql-logo.png" title="FaableQL"> </a> <p align="center">FaableQL is a query syntax with MongoDB support</p> </p>
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Readme
Usage
Convert the following FaableQL query status:published order:created
to a valid mongodb query.
const config = {...}
const fql = create_faableql(config)
const query = fql(`status:published type:article`)
results in.
{
"$and": [
{ "status": { "$eq": "published" } },
{ "type": { "$eq": "article" } }
]
}
Use cases:
- As a cli flag. ie:
mycli --filter status:published
- To filter results in a single query param. ie:
GET /publications?q=status:published
Install
With NPM:
npm install @faable/faableql
With Yarn:
yarn add @faable/faableql
Getting Started
Configure fields that can be queried in MongoDB:
const fields = [{ name: "label", db: "labels" }];
| param | description | | ----- | ----------------------------- | | name | field name in FaableQL string | | db | MongoDB field name |
Create fql
instance configured with defined fields.
import { create_faableql } from "@faable/faableql";
const fql = create_faableql(fields);
Convert a FaableQL
query to MongoDB
:
const query = "label:optimus label:prime";
// Process FaableQL query
const mongodb_query = fql(query);
mongodb_query
will be converted to:
{
"$and": [{ "labels": { "$eq": "optimus" } }, { "labels": { "$eq": "prime" } }]
}
use mongoose
to get results filtered by your query
const docs = await Model.find(mongodb_query);
Syntax
Query = FieldTerm { whitespace FieldTerm }
FieldTerm = name Operator value
Operators
Avaliable operators
| Operator | Description | MongoDB |
| -------- | ----------- | ---------------------------- |
| :
| Equal | {<db_field>:{$eq:<value>}}
|
| !:
| Not equal | {<db_field>:{$ne:<value>}}
|