vdlp / eloquent-model-cloner
Clone eloquent models and relations
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Requires
- php: ^7.4 || ^8.0
This package is auto-updated.
Last update: 2024-11-17 23:52:12 UTC
README
This package was inspired by https://github.com/BKWLD/cloner and modified to also work with OctoberCMS installations.
A trait for Laravel Eloquent models that lets you clone a model and it's relationships, including files. Even to another database.
Installation
To get started with the Eloquent Model Cloner, use Composer to add the package to your project's dependencies:
composer require vdlp/eloquent-model-cloner
Usage
Your model should now look like this:
class Article extends Eloquent { use \Vdlp\EloquentModelCloner\Cloneable; }
You can clone an Article model like so:
$clone = Article::first()->duplicate();
Cloning Relationships
Lets say your Article
has many Photos
(a one to many relationship) and can have more than one Authors
(a many to many relationship). Now, your Article
model should look like this:
class Article extends Eloquent { use \Vdlp\EloquentModelCloner\Cloneable; protected $cloneableRelations = ['photos', 'authors']; public function photos() { return $this->hasMany('Photo'); } public function authors() { return $this->belongsToMany('Author'); } }
The $cloneableRelations
informs the Cloneable
as to which relations it should follow when cloning.
Now when you call Article::first()->duplicate()
, all of the Photo
rows of the original will be copied and associated with the new Article
.
And new pivot rows will be created associating the new Article
with the Authors
of the original (because it is a many to many relationship, no new Author
rows are created).
Furthermore, if the Photo
model has many of some other model, you can specify $cloneableRelations
in its class and Cloner
will continue replicating them as well.
Customizing the cloned attributes
By default, Cloner
does not copy the id
(or whatever you've defined as the key
for the model) field; it assumes a new value will be auto-incremented.
It also does not copy the created_at
or updated_at
.
You can add additional attributes to ignore as follows:
class Photo extends Eloquent { use \Vdlp\EloquentModelCloner\Cloneable; protected $cloneExemptAttributes = ['uid', 'source']; public function article() { return $this->belongsTo('Article'); } public function onCloning($src, $child = null) { $this->uid = str_random(); if ($child) { echo 'This was cloned as a relation!'; } echo 'The original key is: ' . $src->getKey(); } }
The $cloneExemptAttributes
adds to the defaults.
If you want to replace the defaults altogether, override the trait's getCloneExemptAttributes()
method and return an array.
Also, note the onCloning()
method in the example.
It is being used to make sure a unique column stays unique.
The Cloneable
trait adds to no-op callbacks that get called immediately before a model is saved during a duplication and immediately after: onCloning()
and onCloned()
.
The $child
parameter allows you to customize the behavior based on if it's being cloned as a relation or direct.
In addition, Cloner fires events during cloning and when the model has been cloned, see:
\Vdlp\EloquentModelCloner\Events\Cloned
\Vdlp\EloquentModelCloner\Events\Cloning
The event payload contains the clone and the original model instances.