57 lines
1.4 KiB
PHP
57 lines
1.4 KiB
PHP
<?php
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namespace App\Modules\Academic\Models;
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use CodeIgniter\Model;
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class TeacherSubjectModel extends Model
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{
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protected $table = 'teacher_subjects';
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protected $primaryKey = 'id';
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protected $useAutoIncrement = true;
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protected $returnType = 'array';
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protected $useSoftDeletes = false;
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protected $protectFields = true;
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protected $allowedFields = [
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'teacher_user_id',
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'subject_id',
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];
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protected $useTimestamps = true;
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protected $createdField = 'created_at';
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protected $updatedField = 'updated_at';
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/**
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* Get subject IDs for a teacher.
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*
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* @param int $teacherId
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* @return array<int>
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*/
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public function getSubjectIdsForTeacher(int $teacherId): array
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{
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$rows = $this->select('subject_id')
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->where('teacher_user_id', $teacherId)
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->findAll();
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return array_map(static fn ($row) => (int) $row['subject_id'], $rows);
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}
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/**
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* Get mapping: subject_id => [teacher_user_id, ...].
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*
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* @return array<int, array<int>>
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*/
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public function getMapSubjectToTeacherIds(): array
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{
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$rows = $this->select('teacher_user_id, subject_id')->findAll();
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$map = [];
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foreach ($rows as $r) {
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$s = (int) $r['subject_id'];
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$t = (int) $r['teacher_user_id'];
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$map[$s][] = $t;
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}
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return $map;
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}
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}
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