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In Laravel applications, model relationships are crucial for structuring complex data and interactions between different entities. The Laravel-Elasticsearch integration supports a variety of relationship types, enabling Elasticsearch documents to relate to each other similarly to how models relate in traditional relational databases. This section provides a comprehensive guide on implementing Elasticsearch-to-Elasticsearch model relationships within a Laravel application.
Defining Relationships
Just like in a traditional Laravel Eloquent model, you can define belongsTo, hasMany, hasOne, morphOne, and morphMany relationships in models that use Elasticsearch as their data storage. Here’s a full example illustrating various relationship types in an Elasticsearch context:
Full example
Relationship Diagram
The models will define the following relationships:
Company Model
CompanyLog Model
Avatar Model
Photo Model
Example Usage
This process is exactly the same as defining relationships in traditional Laravel Eloquent models.
Important to note that these are not real joins as Elasticsearch does not support joins. Instead, the relationships are defined in the models themselves and are mapped and retrieved by separate queries internally.