Refactor wholesale prices relationships in Product, ProductVariation, and VariationAttribute models to use morphMany for polymorphic associations

This commit updates the wholesalePrices method in the Product, ProductVariation, and VariationAttribute models to utilize morphMany, allowing for a more flexible relationship with the WholeSalePrice model. Additionally, the WholeSalePrice model is modified to implement a morphTo relationship, enhancing the polymorphic functionality. The obsolete migration for the whole_sale_prices table has been removed to reflect these changes.

Author: Level237

app/Models/Product.php

@@ -123,8 +123,8 @@ public function getVariations()
     });
 }
 
-    public function wholesalePrices(): HasMany
+    public function wholesalePrices()
     {
-        return $this->hasMany(WholeSalePrice::class);
+        return $this->morphMany(WholeSalePrice::class, 'priceable');
     }
 }

app/Models/ProductVariation.php

@@ -5,6 +5,7 @@
 use App\Models\Product;
 use App\Models\AttributeValue;
 use App\Models\VariationImage;
+use App\Models\WholeSalePrice;
 use App\Models\VariationAttribute;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\HasMany;
@@ -39,5 +40,10 @@ public function images(): HasMany
     {
         return $this->hasMany(VariationImage::class);
     }
+
+    public function wholesalePrices()
+    {
+        return $this->morphMany(WholeSalePrice::class, 'priceable');
+    }
 
 }

app/Models/VariationAttribute.php

@@ -3,6 +3,7 @@
 namespace App\Models;
 
 use App\Models\AttributeValue;
+use App\Models\WholeSalePrice;
 use App\Models\ProductVariation;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
@@ -33,4 +34,9 @@ public function attributeValue(): BelongsTo
     {
         return $this->belongsTo(AttributeValue::class);
     }
+
+     public function wholesalePrices()
+    {
+        return $this->morphMany(WholeSalePrice::class, 'priceable');
+    }
 }

app/Models/WholeSalePrice.php

@@ -2,17 +2,23 @@
 
 namespace App\Models;
 
-use App\Models\Product;
+use App\Models\WholeSalePrice;
 use Illuminate\Database\Eloquent\Model;
-use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 
 class WholeSalePrice extends Model
 {
     use HasFactory;
 
-     public function product(): BelongsTo
+     protected $fillable = [
+        'min_quantity',
+        'wholesale_price',
+        'priceable_id',
+        'priceable_type',
+    ];
+
+      public function priceable()
     {
-        return $this->belongsTo(Product::class);
+        return $this->morphTo();
     }
 }

…31357_create_whole_sale_prices_table.php …82104_create_whole_sale_prices_table.phpdatabase/migrations/2025_08_22_131357_create_whole_sale_prices_table.php renamed to database/migrations/2025_09_05_182104_create_whole_sale_prices_table.php database/migrations/2025_08_22_131357_create_whole_sale_prices_table.php renamed to database/migrations/2025_09_05_182104_create_whole_sale_prices_table.php

@@ -1,9 +1,8 @@
 <?php
 
-use App\Models\Product;
-use Illuminate\Support\Facades\Schema;
-use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
 
 return new class extends Migration
 {
@@ -14,13 +13,16 @@ public function up(): void
     {
         Schema::create('whole_sale_prices', function (Blueprint $table) {
             $table->id();
-            $table->foreignIdFor(Product::class)
-            ->constrained()
-            ->restrictOnDelete()
-            ->restrictOnUpdate();
+
+            $table->string('priceable_id');
+            $table->string('priceable_type');
+
             $table->string('min_quantity');
             $table->string("wholesale_price");
+
             $table->timestamps();
+
+            $table->index(['priceable_id', 'priceable_type']);
         });
     }