Use whereHas for morphed relationships in Laravel

Usually, you cant say whereHas('contact') if contact is a morphTo relationship. This package aims to fix that.

Installation

You just require using composer and you're good to go!

composer require rackbeat/laravel-morph-where-has

The Service Provider is automatically registered.

Usage

1. Add possible variations in your model

The problem, is that the morph relationship can have a hard time determining how to handle the whereHas call.

Our solution, is that you define every possible morphed class. Like so:

<?php

class Invoice extends Model {
    // Old morph relation
    public function owner() {
        return $this->morphTo('owner'); 
    }
    
    // New solution
    public function customer() {
        return $this->morphTo('owner')->forClass(App\Customer::class);
    }
    
    public function supplier() {
        return $this->morphTo('owner')->forClass(App\Supplier::class);
    }
}

2. Use whereHas

Invoice::whereHas('supplier', function($query) {
    $query->whereName('John Doe');
})->get();

This will correctly query a relation with the type and any queries you've added.

Requirements

• PHP >= 7.1

Inspiration

Solution based upon work by github@thisdotvoid - modified to fix some common issues.