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Package laravel-watermelon
Short Description Easily set up a sync endpoint to support Watermelon DB in your Laravel projects.
License MIT
Informations about the package laravel-watermelon
Laravel Watermelon
This package provides a Watermelon DB backend sync implementation for Laravel. Watermelon DB is a robust local database synchronization tool to help develop offline-first application. One of the biggest hurdles is implementing the logic on your server to handle the synchronization process.
That's where this package comes in to provide a quick synchronization route you can get up and running in minutes.
This project is still in active development and does not support schema versions or migrations yet. Both of these are major parts of the Watermelon DB spec. Please expect large changes at least until those features are implemented.
Installation
Before getting started you'll need to install the package and publish the config file.
Usage
Once you've installed the package, you need to specify which models will be available through the synchronization
endpoint. Open up the config/watermelon.php
file and update the models
array. The key needs to be the name of table
used locally in your application, and the value must be classname of the related model.
You can also change the route to be something other than /sync
by editing the config file or setting the
WATERMELON_ROUTE
environment variable. You will have to ensure your application makes synchronization requests to
whatever route you specify.
By default, only your global middleware will be applied to the synchronization endpoint. This means that unless you changed
the default global middleware in your Laravel project the synchronization endpoint will be unauthenticated. If you want to
have access to the currently authenticated user you will need to add the web
middleware to the config file's
middleware
array. If you want to restrict access to the synchronization endpoint to authenticated users only, you can
add the auth
middleware in addition to the web
middleware. Of course, you can add any middleware you would like as
long as it's registered in your project.
Once you've specified which models should be available through the synchronization endpoint, you'll need to implement some functionality in the models to support being served as Watermelon change objects.
You will need to add a database column to all of your models to keep track of what the Watermelon ID is, called
watermelon_id
. The default IDs generated by Watermelon are alphanumeric strings, although you can change the type of
the column if you don't use the default IDs autogenerated by Watermelon. A unique index on the column is recommended,
and I like placing it directly after the id
column.
If you did not originally include the created_at
, updated_at
, and deleted_at
timestamp columns, you will also need
to add those columns. Please refer to the Laravel documentation for implementing the
timestamps and
soft deleting functionality.
The only thing you must change in your model class is to use the Watermelon
trait.
The attributes returned through the synchronization endpoint are whitelisted by default. Out of the box, only the
watermelon_id
will be returned (although it will be passed through the endpoint as just id
, this is intentional). To
include more attributes, you will need to add a watermelonAttributes
property to your class. These attributes will be
included alongside the Watermelon ID and can be updated by change objects posted to the synchronization endpoint.
If you need more control over the attributes returned you can override the entire toWatermelonArray
function.
Authorization
By default, all models will be accessible and able to be updated through the synchronization endpoint. This is obviously not ideal in most projects where you need control to authorize which models users can see and what they can update.
Scoping entire records
You can implement a query scope on your models by overriding the scopeWatermelon
function. This scope will be applied
before returning data to pull requests. This can be used, for example, to restrict records to only be retrievable by
users authorized to see them (to have access to the Auth::user()
like in this example, don't forget to add the web
and auth
middlewares as shown in the config example at the start of the Usage section).
Package Development
If you have PHP and Composer installed on your local machine you should be able to easily run the PHPUnit test suite.
If you prefer to run the tests within a Docker container, this project includes Laravel Sail.
To install the dependencies:
All versions of laravel-watermelon with dependencies
illuminate/database Version ^11.0
illuminate/http Version ^11.0
illuminate/routing Version ^11.0
illuminate/support Version ^11.0