What are the potential pitfalls of using static methods like findFirst() in PHP models, and how can they lead to unnecessary dependencies?

Using static methods like findFirst() in PHP models can lead to unnecessary dependencies because they tightly couple the model class with the database connection or query builder. This can make the code harder to test and maintain, as any changes to the database implementation would require modifications in the model class. To solve this issue, it's better to inject the database connection or query builder as a dependency in the model's constructor or methods. 

class User {
    protected $db;

    public function __construct($db) {
        $this->db = $db;
    }

    public function findFirst($id) {
        // Use $this->db to query the database
    }
}

Keywords

static methods findFirst() PHP models unnecessary dependencies

Related Questions