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You may determine the morph 500 augmentin mg of a given model at runtime using the model's getMorphClass method. You may use the resolveRelationUsing my to define relations between Eloquent models at runtime. While not typically recommended for normal application development, взято отсюда may occasionally be useful when developing Laravel packages.

The resolveRelationUsing method accepts the desired relationship name as its first argument. The second argument passed to the method should be a closure that accepts читать больше model 500 augmentin mg and returns a valid Eloquent relationship definition.

Since all Eloquent relationships are defined via methods, you may call those methods to obtain an instance of the relationship without actually executing a query 500 augmentin mg load the related models. In addition, all types of Eloquent 500 augmentin mg also serve as query builders, mv you to continue to chain constraints onto the relationship query before finally executing the SQL query sugmentin your database.

As demonstrated in the example above, you are free to add additional читать статью to relationships when querying them. As you can see, the or clause instructs the query to return any 500 augmentin mg with augmentkn than 100 votes. Because of this, developers often use eager loading to pre-load relationships they know will be accessed after loading the model. Eager loading provides jg significant reduction in SQL queries that must be executed to load a model's relations.

When retrieving model records, you may wish to limit your results based on the existence of a relationship. For example, imagine you want to retrieve all blog posts that have at least one comment.

The relationships must exist within the same database. If you would like to query for a relationship's existence with a single, simple where condition attached to the relationship query, you may find it more convenient to use the whereRelation and 500 augmentin mg methods.

For example, привожу ссылку you want to retrieve all 500 augmentin mg posts that don't have any comments.

These methods accept the name of the relationship as their first argument. Next, the methods accept the names of the related models that you wish to include in the query. This will instruct Laravel to retrieve all of the possible polymorphic types from the database. To accomplish this, you may use the withCount method. In this example, let's assume that Photo and Post models may create ActivityFeed models.

We will assume the ActivityFeed model defines a "morph to" relationship named parentable that allows us to retrieve the parent Photo or Post model for a given ActivityFeed instance. Additionally, let's assume that Photo models "have many" Tag models and Post models "have many" Comment models.

Now, let's imagine we want to retrieve ActivityFeed instances and eager load the parentable parent gm for each ActivityFeed instance.

This means the relationship data is not actually loaded until you first access the property. However, Eloquent can "eager load" relationships at the augmentn you query the parent model.

So, if we have 25 books, the code a day to be alone would run 26 queries: one for the original book, and 25 additional queries to retrieve the author of each book.

Thankfully, we can use eager loading to reduce this operation to just two queries. Additionally, let's assume that Event models belong to a Calendar model, Photo models are associated with Tag models, and Post models belong to an Author model. Sometimes you might want перейти на страницу always load some relationships when retrieving a model.

If you are eager loading a morphTo relationship, Eloquent will run multiple queries to fetch each type of related model. Sometimes you may need to eager load a relationship after the parent model has already been retrieved. Therefore, if you would like, you may instruct Laravel to always prevent the lazy loading 500 augmentin mg relationships.

To accomplish this, you may invoke 500 augmentin mg preventLazyLoading method offered aumentin the base Eloquent model class. Typically, you augmentih call this method within the boot method of your application's AppServiceProvider class. The preventLazyLoading method accepts an optional boolean argument that indicates if lazy loading should be prevented. You may customize the behavior of lazy loading violations using the handleLazyLoadingViolationsUsing method.

For example, perhaps you need to add a new comment to a 500 augmentin mg. Instead, we 500 augmentin mg the comments method to obtain an instance of the relationship.

The difference between save and create is that save accepts 500 augmentin mg full Eloquent model instance while 500 augmentin mg accepts a plain PHP array. If 500 augmentin mg would like to assign a child model to a new parent model, you may use the associate method. In this example, the User model defines a belongsTo relationship to the Account model. For example, let's imagine a user can have жмите сюда roles and a role can have many users.

To remove a many-to-many relationship record, use the detach method. The sync method accepts an array of 500 augmentin mg to place on the intermediate table. Any IDs that are not in the given array will be removed from the intermediate table. If the given ID is currently attached, it will be detached. Eloquent makes managing and 500 augmentin mg нажмите сюда these relationships easy, and supports a variety of common relationships: One To One One To Many Many To Many Has One Through Has Many Through One To One (Polymorphic) One To Many (Polymorphic) Many To Many (Polymorphic) Become a Laravel Partner Laravel Partners are elite shops providing top-notch Laravel development and consulting.

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