├── LICENSE ├── README.md ├── composer.json ├── composer.lock └── src └── AttributeEvents.php /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2020-2022 Jan-Paul Kleemans 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ![Laravel Attribute Events](/../gh-pages/attribute-events.svg#gh-light-mode-only) 2 | ![Laravel Attribute Events](/../gh-pages/attribute-events-dark.svg#gh-dark-mode-only) 3 | 4 |

5 | Build Status 6 | Last Updated 7 | Latest Stable Version 8 | License 9 |

10 | 11 | ```php 12 | class Order extends Model 13 | { 14 | protected $dispatchesEvents = [ 15 | 'status:shipped' => OrderShipped::class, 16 | 'note:*' => OrderNoteChanged::class, 17 | ]; 18 | } 19 | ``` 20 | 21 | Eloquent models fire several handy events throughout their lifecycle, like `created` and `deleted`. However, there are usually many more business meaningful events that happen during a model's life. With this library you can capture those, by mapping attribute changes to your own event classes. 22 | 23 | ## Installation 24 | ```bash 25 | composer require jpkleemans/attribute-events 26 | ``` 27 | 28 | ## How to use it 29 | Use the `Kleemans\AttributeEvents` trait in your model and add the attributes to the `$dispatchesEvents` property: 30 | 31 | ```php 32 | class Order extends Model 33 | { 34 | use AttributeEvents; 35 | 36 | protected $dispatchesEvents = [ 37 | 'created' => OrderPlaced::class, 38 | 'status:canceled' => OrderCanceled::class, 39 | 'note:*' => OrderNoteChanged::class, 40 | ]; 41 | } 42 | ``` 43 | 44 | The attribute events will be dispatched after the updated model is saved. Each event receives the instance of the model through its constructor. 45 | 46 | > For more info on model events and the `$dispatchesEvents` property, visit the Laravel Docs 47 | 48 | ## Listening 49 | Now you can subscribe to the events via the `EventServiceProvider` `$listen` array, or manually with Closure based listeners: 50 | 51 | ```php 52 | Event::listen(function (OrderCanceled $event) { 53 | // Restock inventory 54 | }); 55 | ``` 56 | 57 | Or push realtime updates to your users, using Laravel's broadcasting feature: 58 | 59 | ```js 60 | Echo.channel('orders') 61 | .listen('OrderShipped', (event) => { 62 | // Display a notification 63 | }) 64 | ``` 65 | 66 | ## JSON attributes 67 | For attributes stored as JSON, you can use the `->` operator: 68 | 69 | ```php 70 | protected $dispatchesEvents = [ 71 | 'payment->status:completed' => PaymentCompleted::class, 72 | ]; 73 | ``` 74 | 75 | ## Accessors 76 | For more complex state changes, you can use attributes defined by an accessor: 77 | 78 | ```php 79 | class Product extends Model 80 | { 81 | protected $dispatchesEvents = [ 82 | 'low_stock:true' => ProductReachedLowStock::class, 83 | ]; 84 | 85 | public function getLowStockAttribute(): bool 86 | { 87 | return $this->stock <= 3; 88 | } 89 | } 90 | ``` 91 | 92 | > You can also use the [new way of defining accessors](https://laravel.com/docs/9.x/releases#eloquent-accessors-and-mutators) introduced in Laravel 9. 93 | 94 | ## Learn more 95 | - [“Decouple your Laravel code using Attribute Events”](https://jpkleemans.medium.com/decouple-your-laravel-code-using-attribute-events-de8f2528f46a) by Jan-Paul Kleemans 96 | - [Laravel Docs on Model Events](https://laravel.com/docs/eloquent#events) 97 | 98 | ## Sponsors 99 | 100 | 101 | Nexxtmove Logo 102 | 103 | 104 | Thanks to Nexxtmove for sponsoring the development of this project. 105 | Your logo or name here? [Sponsor this project](https://github.com/sponsors/jpkleemans). 106 | 107 | ## License 108 | 109 | Code released under the [MIT License](https://github.com/jpkleemans/attribute-events/blob/master/LICENSE). 110 | -------------------------------------------------------------------------------- /composer.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "jpkleemans/attribute-events", 3 | "description": "🔥 Fire events on attribute changes of your Eloquent model", 4 | "homepage": "https://attribute.events/", 5 | "keywords": [ 6 | "laravel", 7 | "eloquent", 8 | "events", 9 | "attributes", 10 | "domain events", 11 | "model events", 12 | "ddd" 13 | ], 14 | "license": "MIT", 15 | "authors": [ 16 | { 17 | "name": "Jan-Paul Kleemans", 18 | "email": "jpkleemans@gmail.com" 19 | } 20 | ], 21 | "autoload": { 22 | "psr-4": { 23 | "Kleemans\\": "src/" 24 | } 25 | }, 26 | "autoload-dev": { 27 | "psr-4": { 28 | "Kleemans\\Tests\\": "tests/" 29 | } 30 | }, 31 | "require": { 32 | "php": "^7.3|^8.0" 33 | }, 34 | "require-dev": { 35 | "phpunit/phpunit": "^11.5", 36 | "illuminate/events": "^11.44", 37 | "illuminate/database": "^11.44", 38 | "friendsofphp/php-cs-fixer": "^3.75" 39 | }, 40 | "scripts": { 41 | "tests": "phpunit ./tests", 42 | "lint": "php-cs-fixer fix" 43 | } 44 | } 45 | -------------------------------------------------------------------------------- /src/AttributeEvents.php: -------------------------------------------------------------------------------- 1 | fireAttributeEvents(); 17 | }); 18 | 19 | static::retrieved(function ($model) { 20 | $model->syncOriginalAccessors(); 21 | }); 22 | 23 | static::saved(function ($model) { 24 | $model->syncOriginalAccessors(); 25 | }); 26 | } 27 | 28 | private function fireAttributeEvents(): void 29 | { 30 | foreach ($this->getAttributeEvents() as $change => $event) { 31 | [$attribute, $expected] = explode(':', $change); 32 | 33 | try { 34 | $value = $this->getAttribute($attribute); 35 | } catch (MissingAttributeException) { 36 | continue; 37 | } 38 | 39 | // Accessor 40 | if ($this->hasAccessor($attribute)) { 41 | if (!$this->isDirtyAccessor($attribute)) { 42 | continue; // Not changed 43 | } 44 | } 45 | 46 | // JSON attribute 47 | elseif (Str::contains($attribute, '->')) { 48 | [$attribute, $path] = explode('->', $attribute, 2); 49 | $path = str_replace('->', '.', $path); 50 | 51 | if (!$this->isDirtyNested($attribute, $path)) { 52 | continue; // Not changed 53 | } 54 | 55 | try { 56 | $value = Arr::get($this->getAttribute($attribute), $path); 57 | } catch (MissingAttributeException) { 58 | continue; 59 | } 60 | } 61 | 62 | // Regular attribute 63 | elseif (!$this->isDirty($attribute)) { 64 | continue; // Not changed 65 | } 66 | 67 | if ($this->shouldFireAttributeEvent($value, $expected)) { 68 | $this->fireModelEvent($change, false); 69 | } 70 | } 71 | } 72 | 73 | private function shouldFireAttributeEvent($value, $expected) 74 | { 75 | if ($expected === '*') { 76 | return true; 77 | } 78 | 79 | if ($value instanceof \UnitEnum) { 80 | return $value->name === $expected; 81 | } 82 | 83 | if ($expected === 'true') { 84 | return $value === true; 85 | } 86 | 87 | if ($expected === 'false') { 88 | return $value === false; 89 | } 90 | 91 | // Float 92 | if (is_numeric($expected) && Str::contains($expected, '.')) { 93 | return $value === (float) $expected; 94 | } 95 | 96 | // Int 97 | if (is_numeric($expected)) { 98 | return $value === (int) $expected; 99 | } 100 | 101 | return (string) $value === $expected; 102 | } 103 | 104 | private function syncOriginalAccessors(): void 105 | { 106 | foreach ($this->getAttributeEvents() as $change => $event) { 107 | [$attribute] = explode(':', $change); 108 | 109 | if (!$this->hasAccessor($attribute)) { 110 | continue; // Attribute does not have accessor 111 | } 112 | 113 | try { 114 | $value = $this->getAttribute($attribute); 115 | } catch (MissingAttributeException) { 116 | continue; 117 | } 118 | 119 | if ($value === null) { 120 | continue; // Attribute does not exist 121 | } 122 | 123 | $this->originalAccessors[$attribute] = $value; 124 | } 125 | } 126 | 127 | public function isDirtyAccessor(string $attribute): bool 128 | { 129 | if (!isset($this->originalAccessors[$attribute])) { 130 | return false; // Attribute does not have a original value saved 131 | } 132 | 133 | $originalValue = $this->originalAccessors[$attribute]; 134 | 135 | try { 136 | $currentValue = $this->getAttribute($attribute); 137 | } catch (MissingAttributeException) { 138 | return false; 139 | } 140 | 141 | return $originalValue !== $currentValue; 142 | } 143 | 144 | public function isDirtyNested(string $attribute, string $path): bool 145 | { 146 | $originalValue = Arr::get($this->getOriginal($attribute), $path); 147 | 148 | try { 149 | $currentValue = Arr::get($this->getAttribute($attribute), $path); 150 | } catch (MissingAttributeException) { 151 | return false; 152 | } 153 | 154 | if ($currentValue === null) { 155 | return false; 156 | } 157 | 158 | return $originalValue !== $currentValue; 159 | } 160 | 161 | /** 162 | * @return array 163 | */ 164 | private function getAttributeEvents(): iterable 165 | { 166 | foreach ($this->dispatchesEvents as $change => $event) { 167 | if (!Str::contains($change, ':')) { 168 | continue; // Not an attribute event 169 | } 170 | 171 | yield $change => $event; 172 | } 173 | } 174 | 175 | private function hasAccessor(string $attribute): bool 176 | { 177 | if ($this->hasGetMutator($attribute)) { 178 | return true; 179 | } 180 | 181 | // Check if `hasAttributeGetMutator` exists to maintain compatibility with versions before Laravel 9. 182 | if (method_exists($this, 'hasAttributeGetMutator') && $this->hasAttributeGetMutator($attribute)) { 183 | return true; 184 | } 185 | 186 | return false; 187 | } 188 | } 189 | --------------------------------------------------------------------------------