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LoopBack project site - now with documentation!

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LoopBack community site, This website now includes the LoopBack documentation.

NOTE: The website is served from the


This repository is provided under the MIT License.


To preview the website locally:

  1. Install Ruby and Bundler if you don't have them already.

  2. Clone this repo (you might use the SSH URL instead of HTTPS).:

git clone
  1. cd
    to the repository directory and run the following command:
$ cd
$ bundle install

Bundler will look in the Gemfile for which gems to install. The

gem includes the same version of Jekyll and other dependencies as used by GitHub Pages, so that your local setup mirrors GitHub Pages as closely as possible.

Run and view site locally

Run Jekyll using the following command:

$ npm start

Then, load http://localhost:4001/ on your browser.

NOTE: The docs part will be at http://localhost:4001/doc. It's not yet linked from the main "overview" part of the site, but will be once we launch (RSN).


Jekyll uses a variant of Markdown known as Kramdown.

Jekyll uses the Liquid template engine for templating.

Incorporating external READMEs

The documentation incorporates README files from a number of LoopBack example repositories. We use the get-readmes utility to fetch the README files directly from GitHub. Here is how to update the READMEs

  1. npm install
    (first time/setup only)
  2. npm run fetch-readmes

From there, the README markdown files are incorporated into documentation articles using the standard Jekyll "include" syntax as follows (for example):

title: "Angular example app"
lang: en
layout: readme
source: loopback-example-angular
keywords: LoopBack
sidebar: lb2_sidebar
permalink: /doc/en/lb2/Angular-example-app.html
summary: A brief tutorial on creating an Angular client app using the Loopback AngularJS SDK.

{% include readmes/ %}

Incorporating updates from loopback-next

We use a node script

to copy over contents from loopback-next repository using
package. The script is responsible for copying over the markdown documentation and related tables, as well as the sidebar used for LoopBack 4 content. The changes are then picked up as part of Travis CI's builds along with README update scripts and deployed to GitHub Pages once successful. The
script is also run as part of the builds. If you'd like to make documentation changes for LoopBack 4, please do so on its own repository.

Linting Readmes

There is an additional

npm script
that "lints" the readmes for markdown formatting problems. It is currently "experimental", see this issue for more info.

You can run this script thus:

$ npm run lint-readmes Docs Search

Docs Search is powered by IBM Watson Discovery.

How it works

There are two parts of work to get this working:

  1. The Discovery service is one of the services provided by IBM Cloud. A collection is created with as the URL we'd like to sync.

  2. The IBM Cloud function is used for the search function calling the discovery service and parse the output in the form that the LoopBack web site understands.

Front End

Each documentation page has a search bar the top. The search will redirect the user to a

page to show the results. The results are retrieved from a IBM Cloud Function that acts as a proxy to protect Watson Discovery credentials. The search bar also contains a hidden form input that sets the
value and Watson Discovery filters content based on this value to return context aware results. Ex: Searching for the word
from a LoopBack 4 documentation page will return LoopBack 4 results. To search all documents you can search from the
page. Community Docs and Contribution docs are included in all results.

Cloud Function

The code for the Cloud function can be found here. It is deployed to the same account and must be edited directly in IBM Cloud (formerly BlueMix). The repository exists to document code changes and have peer reviews. Credentials for accessing the Cloud Function can be obtained from Diana Lau OR you can ask them to re-deploy changes.

Your own version

You can deploy the code on your own IBM Cloud account and upload the URL for Discovery in search.html.


This project uses DCO. Be sure to sign off your commits using the

flag or adding
Signed-off-By: Name
in the commit message.


git commit -s -m "feat: my commit message"

Also see the Contributing to LoopBack documentation to get you started.

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