Drop unique constraint on 'cif' in debitures table

Remove the unique constraint on the 'cif' field in the debitures table and refactor the `UniqueCifExceptZero` validation rule to handle the uniqueness check more robustly. Also, add an unused import statement for `UniqueExcept` in `DebitureRequest`.

app/Http/Requests/DebitureRequest.php

@@ -4,6 +4,7 @@
 
     use Illuminate\Foundation\Http\FormRequest;
     use Modules\Lpj\Rules\UniqueCifExceptZero;
+    use Modules\Lpj\Rules\UniqueExcept;
 
     class DebitureRequest extends FormRequest
     {

app/Rules/UniqueCifExceptZero.php

@@ -8,18 +8,25 @@ use Modules\Lpj\Models\Debiture;
 
     class UniqueCifExceptZero implements ValidationRule
     {
+        protected $id;
+
         public function __construct($id = null)
         {
             $this->id = $id;
         }
 
-    public function validate($attribute, $value, $fail): void
+        /**
-    {
+         * Run the validation rule.
-        if (Debiture::where($attribute, $value)
+         */
-                 ->where('id', '!=', $this->id)
+        public function validate(string $attribute, mixed $value, Closure $fail)
-                 ->where($attribute, '!=', '0000000000')
+        : void {
-                 ->exists()) {
+            if ($value !== '0000000000' && $value !== null && Debiture::query()->where($attribute, $value)->when(
-            $fail('The :attribute field must be uniquse.'.$this->id);
+                        $this->id,
+                        function ($query) {
+                            $query->where('id', '!=', $this->id);
+                        },
+                    )->exists()) {
+                $fail('The :attribute field must be unique.');
             }
         }
     }

database/migrations/2024_11_01_023117_update_debitures_table.php

@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('debitures', function (Blueprint $table) {
+            $table->dropUnique(['cif']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('debitures', function (Blueprint $table) {
+            $table->string('cif')->unique()->change();
+        });
+    }
+};