reconstruction of the project

app/Models/MidtermExam.php

@@ -7,10 +7,13 @@ use App\Models\BaseModel;
 class MidtermExam extends BaseModel
 {
     protected $table = 'midterm_exam';
-    protected $primaryKey       = 'id';
-    protected $useAutoIncrement = true;
-    protected $useSoftDeletes   = false;
-    protected $protectFields    = true;
+
+    /**
+     * CI: useTimestamps = false (even though created_at/updated_at columns exist).
+     * Keep it OFF to match behavior (you can still store created_at/updated_at manually).
+     */
+    public $timestamps = true;
+
     protected $fillable = [
         'student_id',
         'school_id',
@@ -24,46 +27,54 @@ class MidtermExam extends BaseModel
         'updated_at',
     ];
 
-    protected bool $allowEmptyInserts = false;
-    protected bool $updateOnlyChanged = true;
+    protected $casts = [
+        'student_id'       => 'integer',
+        'school_id'        => 'integer',
+        'class_section_id' => 'integer',
+        'updated_by'       => 'integer',
 
-    protected $casts = [];
-    protected $castHandlers = [];
+        // score can be decimal; change to 'integer' if it's whole number
+        'score'            => 'decimal:2',
 
-    // Dates
-    public $timestamps = true;
-    protected $dateFormat    = 'datetime';
-    const CREATED_AT = 'created_at';
-    const UPDATED_AT = 'updated_at';
-    protected $deletedField  = 'deleted_at';
+        'created_at'       => 'datetime',
+        'updated_at'       => 'datetime',
+    ];
 
-    // Validation
-    protected $validationRules      = [];
-    protected $validationMessages   = [];
-    protected $skipValidation       = false;
-    protected $cleanValidationRules = true;
-
-    // Callbacks
-    protected $allowCallbacks = true;
-    protected $beforeInsert   = [];
-    protected $afterInsert    = [];
-    protected $beforeUpdate   = [];
-    protected $afterUpdate    = [];
-    protected $beforeFind     = [];
-    protected $afterFind      = [];
-    protected $beforeDelete   = [];
-    protected $afterDelete    = [];
-
-    // Function to get the final exam score for a specific student, semester, and school year
-    public function getMidtermExamScore($studentId, $schoolYear)
+    /* Optional relationships */
+    public function student()
     {
-        // Query the final_score table for the final exam score based on student ID, semester, and school year
-        $result = $this->select('score')  // We only need the score
-                       ->where('student_id', $studentId)
-                       ->where('school_year', $schoolYear)
-                       ->first();  // Get the first matching result
-
-        // Return the score, or null if no result is found
-        return $result ? $result['score'] : null;
+        return $this->belongsTo(Student::class, 'student_id');
     }
-}
+
+    public function classSection()
+    {
+        return $this->belongsTo(ClassSection::class, 'class_section_id');
+    }
+
+    /**
+     * Equivalent of CI getMidtermExamScore()
+     */
+    public static function getMidtermExamScore(
+        int $studentId,
+        ?string $semester,
+        string $schoolYear,
+        ?int $classSectionId = null
+    ) {
+        $q = static::query()
+            ->select('score')
+            ->where('student_id', $studentId)
+            ->where('school_year', $schoolYear);
+
+        if ($semester !== null && $semester !== '') {
+            $q->where('semester', $semester);
+        }
+
+        if ($classSectionId !== null) {
+            $q->where('class_section_id', $classSectionId);
+        }
+
+        $row = $q->first();
+
+        return $row?->score;
+    }
+}