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Laravel Metadata - Metadata for all your models

Laravel Metadata let you store extra data using your model without adding any extra field to your model.

$user->saveMeta('age', 25); // storing
$user->saveMeta('dog_name', 'Buddy'); // storing

$age = $user->getMeta('age');


Install the package via composer:

composer require danielefavi/laravel-metadata

Then add in the config/app.php file the entry DanieleFavi\Metadata\MetaServiceProvider::class, in the providers section:

    'providers' => [
        // ...

Then run the migration:

php artisan migrate

How to use Laravel Metadata in your model

After installing the package you have to add the trait HasMetadata in your model.

For example

use DanieleFavi\Metadata\HasMetadata; // to add in your model

class User extends Authenticatable
    use HasFactory;
    use HasMetadata; // to add in your model
    // ...

Now your model has all the methods to handle the metadata.


Saving the metadata

Using the method saveMeta you can save (store or update) a metadata:

$user->saveMeta('phone_number', '111222333'); // storing a value
$user->saveMeta('color_preference', ['orange', 'yellow']); // storing an array

With saveMetas you can save multiple metadata at once:

    'phone_number' => '333222111',
    'color_preference' => ['red', 'green'],
    'address' => '29 Arlington Avenue',

Getting the metadata

The method getMeta retrieve the metadata for the given key:

$phoneNumber = $user->getMeta('phone_number'); // the value of $phoneNumber is '111222333'

// Default value in case the metadata has not been found (default: null)
$anotherMeta = $user->getMeta('another_meta', 10);

You can retrieve the metadata in bulk

// return an array key => value with the metadata specified for the given keys
$metas = $user->getMetas(['phone_number', 'address']);
// the value of the $metas is an array key => value:
// [
//     'phone_number' => '111222333',
//     'address' => '29 Arlington Avenue'
// ]

// return an array key => value containing all metadata of the user model
$metas = $user->getMetas();

Getting the meta object by key

If you need to get the metadata object (and not just the value as getMeta and getMetas) you can use the method getMetaObj:

$metaObj = $user->getMetaObj('address');

Deleting the metadata

// delete a single metadata

// delete multiple metadata
$user->deleteMeta(['phone_number', 'address']);

// delete all metadata

Getting the meta objects of the model

Getting the collection of metadata attached to the model:

$list = $user->metas;


Getting all the users that have the hair color brown or pink.

$users = User::metaWhere('hair_color', 'brown')
            ->orMetaWhere('hair_color', 'pink')

Getting all the users with the hair color brown or pink and with a dog named Charlie:

$users = User::metaWhere('dog_name', 'charlie')
            ->where(function($query) {
                return $query->metaWhere('hair_color', 'brown')
                    ->orMetaWhere('hair_color', 'pink');

Advanced Metadata Query

You can query the metadata using has, whereHas and with. For example:

$users = User::whereHas('metas', function($query) {
    $query->where('key', 'hair_color');
    $query->where('value', json_encode('blue')); // remember to json_encode the value!!!

Important: when doing your custom queries remember to JSON encode the metavalue because in the DB the metavalue is stored as JSON.
In the example above

Eager Loading the Metadata

Getting all the users with all their metadata:

$users = User::with('metas')->get();

Or lazy loading the metadata:

$user = User::find(1);