withWhereHas(string $relation, Closure|null $callback = null, string $operator = '>=', int $count = 1) Add a relationship count / exists condition to the query with where clauses. from QueriesRelationships Builder|QueriesRelationships orWhereHas(string $relation, Closure|null $callback = ...
Dynamic properties are "lazy loading", meaning they will only load their relationship data when you actually access them. Because of this, developers often use eager loading to pre-load relationships they know will be accessed after loading the model. Eager loading provides a significant reduction ...
By default, Laravel will determine the relationship associated with the given model based on the class name of the model; however, you may specify the relationship name manually by providing it as the second argument to the whereBelongsTo method:...
$books = App\Book::all(); if ($someCondition) { $books->load('author', 'publisher'); }如果你想设置预加载查询的额外条件,则可以传递一个键值为你想要的关联的数组至 load 方法。这个数组的值应是用于接收查询 闭包 实例:$books->load(['author' => function ($query) { $query->orderBy('...
Tip #14 💡: Find Related IDs on a BelongsToMany Relationship Did you know that Laravel ships with the 'allRelatedId()' method to help you fetch all IDs for a belongsToMany relationship? Now you do 🚀 <?php class User extends Model { public function roles() { return $this->belongs...
Any previous relationship constraints that were applied before the model was serialized during the job queueing process will not be applied when the job is deserialized. Therefore, if you wish to work with a subset of a given relationship, you should re-constrain that relationship within your ...
To avoid this, eager load the author's relationship on posts as below. 1$posts = Post::all(); // Avoid doing this 2$posts = Post::with(['author'])->get(); // Do this instead Executing the above code will result in running the following queries. ...
Here i will give you very simple example of how to use withSum() and withCount() with laravel relationship eloquent. we will create Category and Product and how you can add relationship and get it.you can easily use withSum() and withCount() with laravel 6, laravel 7, laravel 8, ...
5. What is with() function in Laravel?Hide Answer The with() function in Laravel is used to eager load relationships for the retrieved models. It's typically used when retrieving models that have relationships with other models to avoid the N+1 query problem. The with() function can be ...
Add relationshiphttp://prettus.local/users?with=groups###Overwrite params nameYou can change the name of the parameters in the configuration file config/repository.phpCacheAdd a layer of cache easily to your repositoryCache UsageImplements the interface CacheableInterface and use CacheableRepository Tr...