Tashfin CRUD

A library for TashfinJS that returns the main crud functions using MongoDB as DB and Tatabot as validator.

Arguments

Tashfin CRUD takes 4 arguments:

• moduleName: String serving as collection name
• schema: Schema to use in validation
• db: MongoDB instance
• moduleOptions: An object containing these options:
  • listQuery: The MongoDB aggregation to use for GET_$root.
  • paranoid: Boolean. If true DELETE_root won't completely delete item. Instead it will set its trash property to true.

Return

Tashfin CRUD return 5 functions:

• GET_$root
• GET_root
• POST_root
• PUT_root
• DELETE_root

Installation

npm i -save tashfin-crud

Examples

Raw use

The simplest example:

First start by instantiate db and pass it to module in your main app file:

const { MongoClient } = require("mongodb");
const { listen } = require("tashfin");
const users = require("./app_modules/users");

mongoClient.connect(<DB_URL>, async (err, db) => {
  if (err) throw err;
  console.log("Connected successfully to database");

  const logRequest = true;
  const modules =  { users: users(db) };

  listen({modules, logRequest});
});

Then in your module file:

const tashfinCRUD = require("tashfin-crud");

// The schema is set in the file for example purpose, but it's better to put it in another 
// file, import it.
const schema = {
  "*name": "string",
  email: "email",
  age: { type: "integer", min: 13 },
  role: { type: "enum", values: ["admin", "follower"] }
}

module.exports = db => tashfinCRUD("users", schema, db);

Now, you should be able to use these routes:

• GET /users
• GET /users/123
• POST /users
• PUT /users/123
• DELETE /users/123

Custom Aggregation

If you want to set an aggregation for GET_$root, here is how you do:

your module file:

const tashfinCRUD = require("tashfin-crud");

// The schema is set in the file for example purpose, but it's better to put it in another 
// file, import it.
const schema = {
  "*name": "string",
  email: "email",
  age: { type: "integer", min: 13 },
  role: { type: "enum", values: ["admin", "follower"] }
}

const listQuery = [ //...My custom aggregation ];

module.exports = db => tashfinCRUD("users", schema, db, { listQuery });

Custom Functions

Since Tashfin CRUD just returns functions, you can return custom functions instead of the returned ones from the library.

Here is an example of custom PUT_root:

const tashfinCRUD = require("tashfin-crud");

// The schema is set in the file for example purpose, but it's better to put it in another 
// file, import it.
const schema = {
  "*name": "string",
  email: "email",
  age: { type: "integer", min: 13 },
  role: { type: "enum", values: ["admin", "follower"] }
}

const listQuery = [ //...My custom aggregation ];

module.exports = db => {

  const tashfinCRUDFunctions = tashfinCRUD("users", schema, db, listQuery);

  const DELETE_root = () => { statusCode: 403, content: "Here, we don't delete things" };

  return { ...tashfinCRUDFunctions, DELETE_root};
}