ipdate

database/migrations/2026_01_27_172000_add_foreign_keys_to_order_table.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        // 1. Modify columns to match referenced types (unsignedBigInteger) and make them nullable
+        Schema::table('order', function (Blueprint $table) {
+            $table->unsignedBigInteger('customer_id')->nullable()->default(null)->change();
+            $table->unsignedBigInteger('user_id')->nullable()->default(null)->change();
+            $table->unsignedBigInteger('discount_id')->nullable()->default(null)->change();
+            $table->unsignedBigInteger('invoice_id')->nullable()->default(null)->change();
+        });
+
+        // 2. Convert default 0 values to null to ensure foreign key integrity
+        DB::table('order')->where('customer_id', 0)->update(['customer_id' => null]);
+        DB::table('order')->where('user_id', 0)->update(['user_id' => null]);
+        DB::table('order')->where('discount_id', 0)->update(['discount_id' => null]);
+        DB::table('order')->where('invoice_id', 0)->update(['invoice_id' => null]);
+
+        // 3. Add foreign key constraints
+        Schema::table('order', function (Blueprint $table) {
+            $table->foreign('customer_id')->references('id')->on('customer')->onDelete('set null');
+            $table->foreign('user_id')->references('id')->on('user')->onDelete('set null');
+            $table->foreign('discount_id')->references('id')->on('discount')->onDelete('set null');
+            $table->foreign('invoice_id')->references('id')->on('invoice')->onDelete('set null');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('order', function (Blueprint $table) {
+            // Drop foreign keys
+            $table->dropForeign(['customer_id']);
+            $table->dropForeign(['user_id']);
+            $table->dropForeign(['discount_id']);
+            $table->dropForeign(['invoice_id']);
+
+            // Revert columns to previous state (integers/bigInteger with default 0)
+            // Note: This matches the original migration definitions
+            $table->bigInteger('customer_id')->default(0)->nullable(false)->change();
+            $table->integer('user_id')->default(0)->nullable(false)->change();
+            $table->integer('discount_id')->default(0)->nullable(false)->change();
+            $table->integer('invoice_id')->default(0)->nullable(false)->change();
+        });
+        
+        // Restore 0 values where null (optional, but keeps consistency with down())
+        DB::table('order')->whereNull('customer_id')->update(['customer_id' => 0]);
+        DB::table('order')->whereNull('user_id')->update(['user_id' => 0]);
+        DB::table('order')->whereNull('discount_id')->update(['discount_id' => 0]);
+        DB::table('order')->whereNull('invoice_id')->update(['invoice_id' => 0]);
+    }
+};