elepunk / evaluator
Laravel package for symfony expression language component
v1.0.1
2015-02-24 06:56 UTC
Requires
- php: >=5.4
- orchestra/config: ~3.0
- orchestra/memory: ~3.0
- symfony/expression-language: ~2.6
Requires (Dev)
- mockery/mockery: ~0.9
- satooshi/php-coveralls: ~0.6
This package is not auto-updated.
Last update: 2024-11-19 03:30:56 UTC
README
A Laravel package and Orchestra extension for symfony/expression-language component.
Installation
Simpy update the composer.json
file and run composer install
.
"require": { "elepunk/evaluator": "1.0.*" }
Quick Installation
composer require "elepunk/evaluator=1.0.*"
Setup
If you are using Orchestra Platform, you can simply enable the extension or add the service provider. This will also load the Evaluator
alias automatically.
'providers' => [ 'Elepunk\Evaluator\EvaluatorServiceProvider' ];
Adapter
This package provide Orchesta Memory as the default driver.
How To Use
Evaluating an expression
$test = [ 'foo' => 10, 'bar' => 5 ]; echo Evaluator::evaluate('foo > bar', $test); //this will return true
You can also save the expression rule.
$test = [ 'foo' => 10, 'bar' => 5 ]; Evaluator::expression()->add('test', 'foo > bar'); echo Evaluator::evaluateRule('test', $test); //this will return true
For supported expressions, visit the Symfony Expression Language Component.
Condition
Let say we want to implement 10% tax to our collection.
$item = [ 'price' => 100 ]; $condition = [ 'target' => 'price', 'action' => '10%', 'rule' => 'price > 50' ]; Evaluator::expression()->add('tax', $condition); $calculated = Evaluator::condition('tax', $item);
Item with multiplier.
$item = [ 'price' => 50, 'quantity' => 2 ]; $condition = [ 'target' => 'price', 'action' => '10%', 'rule' => 'price > 50', 'multiplier' => 'quantity' ]; Evaluator::expression()->add('tax', $condition); $calculated = Evaluator::condition('tax', $item);