moleculer-orm-mongoose v0.1.0

moleculer-orm-mongoose

Mongoose wrapper for Moleculer.js Ecosystem. This Library implement Moleculer-orm pattern.

Features

• default CRUD actions
• cached actions
• pagination support
• fields filtering
• populating
• sorting
• entity lifecycle events for notifications
• fully customizable

Install

$ npm install moleculer-orm-mongoose --save

Usage

"use strict";

const { ServiceBroker } = require("moleculer");
const MongooseMixin = require("moleculer-orm-mongoose");

const broker = new ServiceBroker();

// Create a DB service for `user` entities
broker.createService({
    name: "users",
    mixins: [MongooseMixin],

    model : {
        name: "users",
        fields: {
            username: { type: String },
            name: { type: String },
            status: { type: Number }
        }
    },

    afterConnected() {
        // Seed the DB with ˙this.create`
    }
});

broker.start()

// Create a new user
.then(() => broker.call("users.create", {
    username: "john",
    name: "John Doe",
    status: 1
}))

// Get all users
.then(() => broker.call("users.find").then(console.log));

// List users with pagination
.then(() => broker.call("users.list", { page: 2, pageSize: 10 }).then(console.log));

// Get a user
.then(() => broker.call("users.get", { id: 2 }).then(console.log));

// Update a user
.then(() => broker.call("users.update", { id: 2, name: "Jane Doe" }).then(console.log));

// Delete a user
.then(() => broker.call("users.remove", { id: 2 }).then(console.log));

Settings

Actions

get

Return only one entity by ID or by the where param, if not found will throw a NotFoundError.

Parameters

Results

Type: Object, Array.<Object>

Found entity.

Throws

• NotFoundError - If entity not found.

Example

// Get a user by ID
broker.call("users.get", { id: 2 }).then(console.log);

// Get a user by username
broker.call("users.get", { where: { username: "john" } }).then(console.log);

// Get a user by ID with fields filter
broker.call("users.get", { id: 2, fields: ["username", "name"] }).then(console.log);

find

Find entities by query.

Parameters

Results

Type: Array.<Object>

List of found entities.

Example

// Find all users
broker.call("users.find").then(console.log);

// Find all users with fields filter
broker.call("users.find", { fields: ["username", "name"] }).then(console.log);

// Find all users with limit
broker.call("users.find", { limit: 10 }).then(console.log);

// Find all users with offset
broker.call("users.find", { offset: 10 }).then(console.log);

// Find all users with sort
broker.call("users.find", { sort: "name" }).then(console.log);

// Find all users with search
broker.call("users.find", { search: "john" }).then(console.log);

// Find all users with search
broker.call("users.find", { search: { username: "john" } }).then(console.log);

// Find all users with where
broker.call("users.find", { where: { status: 1 } }).then(console.log);

count

Get count of entities by query.

Parameters

Results

Type: Number

Count of found entities.

Example

// Count all users
broker.call("users.count").then(console.log);

// Count all users with search
broker.call("users.count", { search: "john" }).then(console.log);

// Count all users with search
broker.call("users.count", { search: { username: "john" } }).then(console.log);

// Count all users with where
broker.call("users.count", { where: { status: 1 } }).then(console.log);

list

List entities by filters and pagination results.

Parameters

Results

Type: Object

List of found entities and count with pagination info.

Example

// List all users
broker.call("users.list").then(console.log);

// List all users with fields filter
broker.call("users.list", { fields: ["username", "name"] }).then(console.log);

// List all users with page
broker.call("users.list", { page: 2 }).then(console.log);

// List all users with pageSize
broker.call("users.list", { pageSize: 10 }).then(console.log);

// List all users with sort
broker.call("users.list", { sort: "name" }).then(console.log);

// List all users with search
broker.call("users.list", { search: "john" }).then(console.log);

// List all users with search
broker.call("users.list", { search: { username: "john" } }).then(console.log);

create

Create a new entity.

Parameters

Results

Type: Object

Saved entity.

Example

// Create a new user
broker.call("users.create", { username: "john", name: "John Doe", status: 1 }).then(console.log);

insert

Create many new entities.

Parameters

Results

Type: Array.<Object>

Saved entities.

Example

// Create a new user
broker.call("users.insert", [
    { username: "john", name: "John Doe", status: 1 },
    { username: "jane", name: "Jane Doe", status: 1 }
]).then(console.log);

update

Update an entity by ID.

After update, clear the cache & call lifecycle events.

Parameters

Results

Type: Object

Updated entity.

Throws

• NotFoundError - If entity not found.

Example

// Update a user
broker.call("users.update", { id: 5, name: "John Doe" }).then(console.log);

remove

Remove an entity by ID.

Parameters

Results

Type: Number

Count of removed entities.

Throws

• NotFoundError - If entity not found.

Example

// Remove a user
broker.call("users.remove", { id: 5 }).then(console.log);

Methods

sanitizeParams

Sanitize context parameters at find action.

Parameters

Results

Type: Object

clearCache

Clear cached entities

Parameters

No input parameters.

Results

Type: Promise

toJSON

Transform the fetched documents

Parameters

Results

Type: Array, Object

_find

Find entities by query.

Parameters

Results

Type: Array.<Object>

List of found entities.

_count

Get count of entities by query.

Parameters

Results

Type: Number

Count of found entities.

_list

List entities by filters and pagination results.

Parameters

Results

Type: Object

List of found entities and count.

_create

Create a new entity.

Parameters

Results

Type: Object

Saved entity.

_insert

Create many new entities.

Parameters

Results

Type: Object, Array.<Object>

Saved entity(ies).

_get

Get entity by ID.

Parameters

Results

Type: Object, Array.<Object>

Found entity(ies).

_update

Update an entity by ID.

After update, clear the cache & call lifecycle events.

Parameters

Results

Type: Object

Updated entity.

_remove

Remove an entity by ID.

Parameters

Lifecycle entity events

There are 3 lifecycle entity events which are called when entities are manipulated.

broker.createService({
    name: "posts",
    mixins: [DbService],
    settings: {},

    afterConnected() {
        this.logger.info("Connected successfully");
    },

    entityCreated(json, ctx) {
        this.logger.info("New entity created!");
    },

    entityUpdated(json, ctx) {
        // You can also access to Context
        this.logger.info(`Entity updated by '${ctx.meta.user.name}' user!`);
    },

    entityRemoved(json, ctx) {
        this.logger.info("Entity removed", json);
    },    
});

Please note! If you manipulate multiple entities (updateMany, removeMany), the json parameter will be a Number instead of entities!

Extend with custom actions

Naturally you can extend this service with your custom actions.

const MongooseMixin = require("moleculer-orm-mongoose");

module.exports = {
    name: "posts",
    mixins: [MongooseMixin],
    
    model: {
        ...
    },

    actions: {
        // Increment `votes` field by post ID
        vote(ctx) {
            return this.model.updateById(ctx.params.id, { $inc: { votes: 1 } });
        },

        // List
        byName(ctx) {
            return this.find({
                where: {
                    name: ctx.params.name
                },
                limit: ctx.params.limit || 10,
                sort: "-createdAt"
            });
        }
    }
}

Remove default actions

According to moleculer documentation you can disable an action when override it with false

const MongooseMixin = require("moleculer-orm-mongoose");

module.exports = {
    name: "posts",
    mixins: [MongooseMixin],

    actions: {
        // Disable find default action
        find: false
    }
}

Test

$ npm test

In development with watching

$ npm run ci

License

The project is available under the MIT license.

Contact

Copyright (c) 2016-2022 MoleculerJS