addgod / evaluator
Laravel package for symfony expression language component
v1.2.2
2020-01-13 08:30 UTC
Requires
- php: >=7.0
- orchestra/config: ~4.2.0
- orchestra/memory: ~4.0.0
- symfony/expression-language: ~5.0.2
Requires (Dev)
- mockery/mockery: ~1.3.1
- orchestra/testbench: ~3.0
- satooshi/php-coveralls: ~2.2.0
README
A Laravel package and Orchestra extension for symfony/expression-language component.
Installation
composer require addgod/evaluator
Setup
'providers' => [ Orchestra\Memory\MemoryServiceProvider::class, ];
Run migration
php artisan migrate
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);