reconstruction of the project

app/Models/StudentAllergy.php

@@ -2,61 +2,118 @@
 
 namespace App\Models;
 
+use Illuminate\Database\Eloquent\Builder;
 use App\Models\BaseModel;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
 class StudentAllergy extends BaseModel
 {
     protected $table = 'student_allergies';
-    protected $primaryKey       = 'id';
+
+    /**
+     * CI: timestamps disabled
+     */
+    public $timestamps = false;
+
     protected $fillable = [
         'student_id',
         'allergy',
     ];
-    public $timestamps = false;
 
-    protected $validationRules = [
-        'student_id' => 'required|is_natural_no_zero',
-        'allergy'    => 'required|string|max_length[100]',
+    protected $casts = [
+        'student_id' => 'integer',
     ];
 
-    protected $validationMessages = [
-        'student_id' => [
-            'required'            => 'Student ID is required.',
-            'is_natural_no_zero' => 'Invalid Student ID.',
-        ],
-        'allergy' => [
-            'required'   => 'Allergy is required.',
-            'max_length' => 'Allergy must be 100 characters or fewer.',
-        ],
-    ];
-
-        /**
-     * Get all allergies for a given student.
-     *
-     * @param int $studentId
-     * @return array
+    /* ============================================================
+     * Relationships (optional)
+     * ============================================================
      */
-    public function getAllergiesByStudentId(int $studentId): array
+
+    public function student(): BelongsTo
     {
-        return $this->where('student_id', $studentId)
-                    ->findAll();
+        return $this->belongsTo(Student::class, 'student_id');
     }
 
-        /**
-     * Get allergies for multiple students.
-     *
-     * @param array $studentIds
-     * @return array grouped by student_id
+    /* ============================================================
+     * Scopes
+     * ============================================================
      */
-    public function getAllergiesByStudentIds(array $studentIds): array
+
+    public function scopeForStudent(Builder $q, int $studentId): Builder
     {
-        $rows = $this->whereIn('student_id', $studentIds)->findAll();
+        return $q->where('student_id', $studentId);
+    }
+
+    public function scopeForStudents(Builder $q, array $studentIds): Builder
+    {
+        $ids = array_values(array_unique(array_filter(array_map('intval', $studentIds))));
+        return empty($ids) ? $q->whereRaw('1=0') : $q->whereIn('student_id', $ids);
+    }
+
+    /* ============================================================
+     * CI-compatible methods
+     * ============================================================
+     */
+
+    /**
+     * Get all allergies for a given student.
+     * CI: getAllergiesByStudentId()
+     */
+    public static function getAllergiesByStudentId(int $studentId): array
+    {
+        return static::query()
+            ->forStudent($studentId)
+            ->orderBy('id', 'asc')
+            ->get()
+            ->all();
+    }
+
+    /**
+     * Get allergies for multiple students, grouped by student_id.
+     * CI: getAllergiesByStudentIds()
+     */
+    public static function getAllergiesByStudentIds(array $studentIds): array
+    {
+        $rows = static::query()
+            ->forStudents($studentIds)
+            ->orderBy('student_id', 'asc')
+            ->orderBy('id', 'asc')
+            ->get()
+            ->all();
 
         $grouped = [];
         foreach ($rows as $row) {
-            $grouped[$row['student_id']][] = $row;
+            // $row is a model instance; convert as needed
+            $sid = (int) $row->student_id;
+            $grouped[$sid][] = $row;
         }
 
         return $grouped;
     }
-}
+
+    /* ============================================================
+     * Validation rules helper (FormRequest/controller)
+     * Mirrors CI validation intent
+     * ============================================================
+     */
+
+    public static function rules(bool $updating = false): array
+    {
+        $req = $updating ? 'sometimes' : 'required';
+
+        return [
+            'student_id' => [$req, 'integer', 'min:1', 'exists:students,id'],
+            'allergy'    => [$req, 'string', 'max:100'],
+        ];
+    }
+
+    public static function messages(): array
+    {
+        return [
+            'student_id.required' => 'Student ID is required.',
+            'student_id.min'      => 'Invalid Student ID.',
+            'allergy.required'    => 'Allergy is required.',
+            'allergy.max'         => 'Allergy must be 100 characters or fewer.',
+        ];
+    }
+}