recreate project
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root
@@ -0,0 +1,409 @@
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<?php
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namespace App\Models;
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use CodeIgniter\Model;
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class TeacherClassModel extends Model
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{
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protected $table = 'teacher_class';
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protected $primaryKey = 'id';
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protected $allowedFields = [
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'teacher_id',
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'class_section_id',
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'school_year',
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'position', // NEW
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'updated_by',
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'updated_at',
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'created_at'
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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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protected $returnType = 'array';
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protected $useSoftDeletes = false;
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protected $skipValidation = false;
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/** Request-lifetime memo cache */
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protected array $assignedCache = [];
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protected array $assignedBySectionCache = [];
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protected $validationRules = [
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'teacher_id' => 'required|integer',
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'class_section_id' => 'required|integer',
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'school_year' => 'required|string|max_length[9]',
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'position' => 'required|in_list[main,ta]',
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];
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protected $validationMessages = [
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'teacher_id' => [
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'required' => 'The teacher ID is required.',
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'integer' => 'The teacher ID must be an integer.',
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],
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'class_section_id' => [
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'required' => 'The class section ID is required.',
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'integer' => 'The class section ID must be an integer.',
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],
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'school_year' => [
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'required' => 'The school year is required.',
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'max_length' => 'The school year cannot exceed 9 characters.',
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],
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'position' => [
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'required' => 'The position (main or ta) is required.',
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'in_list' => 'The position must be either "main" or "ta".',
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],
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];
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public function getClassSectionIdByUserId($user_id)
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{
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$result = $this->where('teacher_id', $user_id)->first();
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if (!$result) {
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log_message('error', "No class section found for user ID: $user_id");
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return null;
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}
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return $result;
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}
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public function getClassAssignmentsByUserId(int $userId, ?string $schoolYear = null, ?string $semester = null): array
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{
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$builder = $this->db->table('teacher_class tc')
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->select([
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'cs.class_section_name',
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'cs.id AS class_section_pk',
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'cs.class_section_id',
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'c.id AS class_id',
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'c.class_name',
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'tc.teacher_id',
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'tc.position',
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'tc.school_year',
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])
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->join('classSection cs', 'tc.class_section_id = cs.class_section_id', 'inner')
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->join('classes c', 'cs.class_id = c.id', 'left')
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->where('tc.teacher_id', $userId)
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->where('tc.class_section_id IS NOT NULL', null, false)
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->orderBy('cs.class_section_name', 'ASC');
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if ($schoolYear) $builder->where('tc.school_year', $schoolYear);
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$rows = $builder->get()->getResultArray();
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$out = [];
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foreach ($rows as $r) {
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$out[] = [
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'class_section_pk' => (int)$r['class_section_pk'],
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'class_section_id' => (int)$r['class_section_id'],
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'class_section_name' => $r['class_section_name'],
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'class_id' => isset($r['class_id']) ? (int)$r['class_id'] : null,
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'class_name' => $r['class_name'] ?? null,
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'teacher_id' => (int)$r['teacher_id'],
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'teacher_role' => ucfirst($r['position']), // "Main" or "Ta"
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'school_year' => $r['school_year'],
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'semester' => $semester,
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];
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}
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return $out;
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}
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public function getClassSectionsByTeacherId($teacherId)
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{
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$builder = $this->db->table('teacher_class')
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->select('classSection.class_section_name, teacher_class.teacher_id, teacher_class.position')
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->join('classSection', 'teacher_class.class_section_id = classSection.class_section_id')
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->where('teacher_class.teacher_id', $teacherId)
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->where('teacher_class.class_section_id IS NOT NULL', null, false);
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$result = $builder->get()->getResultArray();
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if ($result) {
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$sectionNames = array_map(fn($row) => $row['class_section_name'], $result);
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$position = $result[0]['position'] ?? '';
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return [
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'role' => ucfirst($position),
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'class_section_name' => implode(', ', $sectionNames)
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];
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} else {
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return ['role' => '', 'class_section_name' => 'No class assigned'];
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}
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}
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public function getClassByTeacherId($teacherId)
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{
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$builder = $this->db->table('teacher_class')
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->select('classSection.class_section_id, classSection.class_section_name')
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->join('classSection', 'teacher_class.class_section_id = classSection.class_section_id')
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->where('teacher_class.teacher_id', $teacherId)
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->where('teacher_class.class_section_id IS NOT NULL', null, false);
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return $builder->get()->getResultArray() ?? [];
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}
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public function getTeacherIdByClassSection(string $classSectionName, string $semester, string $schoolYear)
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{
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$db = \Config\Database::connect();
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$classSectionName = trim($classSectionName);
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if (strpos($classSectionName, ',') !== false) {
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$parts = array_filter(array_map('trim', explode(',', $classSectionName)));
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if (!empty($parts)) {
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$classSectionName = reset($parts); // pick the first section as primary
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}
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}
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if ($classSectionName === '') {
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return null;
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}
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$section = $db->table('classSection')
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->select('class_section_id')
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->where('class_section_name', $classSectionName)
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->get()
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->getRowArray();
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if (!$section) return null;
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$result = $db->table('teacher_class')
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->select('teacher_id')
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->where([
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'class_section_id' => $section['class_section_id'],
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'school_year' => $schoolYear,
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'position' => 'main'
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])
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->get()
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->getRowArray();
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return $result['teacher_id'] ?? null;
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}
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public function getMainTeacherBySection(string $classSectionName, string $semester, string $schoolYear): ?array
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{
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$db = \Config\Database::connect();
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// Adjust table/column names if yours differ (e.g., cs.id vs cs.class_section_id)
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$row = $db->table('classSection cs')
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->select('u.id AS teacher_id, u.firstname, u.lastname')
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->join('teacher_class tc', 'tc.class_section_id = cs.id', 'inner')
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->join('users u', 'u.id = tc.teacher_id', 'inner')
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->where('cs.class_section_name', $classSectionName)
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->where('tc.school_year', $schoolYear)
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->where('tc.position', 'main')
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->get()
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->getRowArray();
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return $row ?: null; // ['teacher_id' => ..., 'firstname' => ..., 'lastname' => ...] or null
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}
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/**
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* Return teacher + TAs for a class section in the current term.
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* Output:
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* [
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* 'teacher_id' => int|null,
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* 'teacher_name' => string, // 'N/A' if none found
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* 'tas' => [ ['id'=>int,'name'=>string], ... ],
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* ]
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*/
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public function getTeacherTABySection(int|string $classSectionId, string $semester, string $schoolYear): array
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{
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$db = \Config\Database::connect();
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// We can read everything straight from teacher_class; no need to join classSection.
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$rows = $db->table('teacher_class tc')
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->select('u.id AS user_id, u.firstname, u.lastname, u.gender, tc.position')
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->join('users u', 'u.id = tc.teacher_id', 'inner')
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->where('tc.class_section_id', $classSectionId)
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->where('tc.school_year', $schoolYear)
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// Prefer the most recent assignment and keep main/co-teachers ahead of assistants
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->orderBy("CASE WHEN LOWER(tc.position) IN ('main','teacher','main teacher') THEN 0 ELSE 1 END", 'ASC', false)
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->orderBy('COALESCE(tc.updated_at, tc.id)', 'DESC', false)
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->orderBy('tc.id', 'DESC')
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->get()
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->getResultArray();
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$teacherId = null;
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$teacherName = 'N/A';
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$teacherNames = [];
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$tas = [];
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$firstSeen = null; // fallback if no explicit "main"/"teacher"
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$taSeen = [];
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$mainSeen = [];
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$withPrefix = static function (array $row): string {
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$first = trim((string)($row['firstname'] ?? ''));
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$last = trim((string)($row['lastname'] ?? ''));
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$gender = strtolower(trim((string)($row['gender'] ?? '')));
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$name = trim($first . ' ' . $last);
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if ($name === '') return '';
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$prefix = ($gender === 'female') ? 'Sr ' : (($gender === 'male') ? 'Br ' : '');
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return trim($prefix . $name);
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};
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foreach ($rows as $r) {
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$full = $withPrefix($r);
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if ($full === '') continue;
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if ($firstSeen === null) {
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$firstSeen = ['id' => (int)$r['user_id'], 'name' => $full];
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}
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$pos = strtolower((string)($r['position'] ?? ''));
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// Treat either 'main' or legacy 'teacher' as the main teacher role.
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if (in_array($pos, ['main', 'teacher', 'main teacher'], true)) {
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$uid = (int)$r['user_id'];
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if (!isset($mainSeen[$uid])) {
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$teacherNames[] = $full;
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$mainSeen[$uid] = true;
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}
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if ($teacherId === null) {
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$teacherId = $uid;
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$teacherName = $full;
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}
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continue;
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}
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// Treat 'ta', 'assistant', 'teacher_assistant' (and similar) as TA roles.
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if (in_array($pos, ['ta', 'assistant', 'teacher_assistant'], true)) {
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$tid = (int)$r['user_id'];
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if (!isset($taSeen[$tid])) {
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$tas[] = ['id' => $tid, 'name' => $full];
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$taSeen[$tid] = true;
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}
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continue;
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}
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// Unknown/missing position: don't discard; we’ll use firstSeen as a fallback later.
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}
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// Fallback: if no explicit main teacher found, use the first record seen.
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if ($teacherId === null && $firstSeen !== null) {
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$teacherId = $firstSeen['id'];
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$teacherName = $firstSeen['name'];
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$teacherNames[] = $firstSeen['name'];
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}
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// Ensure uniqueness/cleaning
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$teacherNames = array_values(array_unique(array_filter(array_map('trim', $teacherNames))));
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return [
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'teacher_id' => $teacherId,
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'teacher_name' => $teacherName,
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'teacher_names' => $teacherNames,
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'tas' => $tas,
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];
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}
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public function assignTeacherToClass($teacherId, $classSectionId, $semester, $schoolYear, $position = 'main')
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{
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if (!in_array($position, ['main', 'ta'])) {
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throw new \InvalidArgumentException('Position must be either "main" or "ta"');
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}
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$existing = $this->where([
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'teacher_id' => $teacherId,
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'class_section_id' => $classSectionId,
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'school_year' => $schoolYear,
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'position' => $position
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])->first();
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if ($existing) {
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return $this->update($existing['id'], ['updated_at' => utc_now()]);
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}
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return $this->insert([
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'teacher_id' => $teacherId,
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'class_section_id' => $classSectionId,
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'school_year' => $schoolYear,
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'position' => $position,
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'created_at' => utc_now(),
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'updated_at' => utc_now()
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]);
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}
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public function findAll($limit = 0, $offset = 0)
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{
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return parent::findAll($limit, $offset);
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}
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public function getAssignedClassSections(int $teacherId, string $schoolYear, string $semester)
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{
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return $this->select('teacher_class.class_section_id, teacher_class.position, classSection.class_section_name')
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->join('classSection', 'classSection.id = teacher_class.class_section_id')
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->where('teacher_class.teacher_id', $teacherId)
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->where('teacher_class.school_year', $schoolYear)
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->findAll();
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}
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/**
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* Get assigned teachers (with names) for ONE section code + term.
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* Returns rows: class_section_id, teacher_id, position, firstname, lastname
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*/
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public function assignedForSectionTerm(int $sectionCode, string $semester, string $schoolYear): array
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{
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$key = $sectionCode . '|' . $semester . '|' . $schoolYear;
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if (isset($this->assignedCache[$key])) {
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return $this->assignedCache[$key];
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}
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$rows = $this->db->table('teacher_class tc')
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->select('tc.class_section_id, tc.teacher_id, tc.position, u.firstname, u.lastname')
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->join('users u', 'u.id = tc.teacher_id', 'left')
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->where('tc.class_section_id', $sectionCode) // SECTION CODE
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->where('tc.school_year', $schoolYear)
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->orderBy("FIELD(tc.position, 'main','ta')", '', false) // main → ta
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->orderBy('u.firstname', 'ASC')
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->get()->getResultArray();
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return $this->assignedCache[$key] = $rows;
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}
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/**
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* Convenience: same as above but keyed by teacher_id.
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* Returns: [teacher_id] => row
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*/
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public function assignedMapForSectionTerm(int $sectionCode, string $semester, string $schoolYear): array
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{
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$out = [];
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foreach ($this->assignedForSectionTerm($sectionCode, $semester, $schoolYear) as $r) {
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$out[(int)$r['teacher_id']] = $r;
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}
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return $out;
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}
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/**
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* Batch helper for a whole term (optionally filtered to some sections).
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* Returns: [sectionCode] => [rows...]
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*/
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public function assignedBySectionForTerm(string $semester, string $schoolYear, ?array $onlySectionCodes = null): array
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{
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$cacheKey = ($onlySectionCodes ? implode(',', array_map('intval', $onlySectionCodes)) : '*') . '|' . $semester . '|' . $schoolYear;
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if (isset($this->assignedBySectionCache[$cacheKey])) {
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return $this->assignedBySectionCache[$cacheKey];
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}
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$qb = $this->db->table('teacher_class tc')
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->select('tc.class_section_id, tc.teacher_id, tc.position, u.firstname, u.lastname')
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->join('users u', 'u.id = tc.teacher_id', 'left')
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->where('tc.school_year', $schoolYear)
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->orderBy('tc.class_section_id', 'ASC')
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->orderBy("FIELD(tc.position, 'main','ta')", '', false)
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->orderBy('u.firstname', 'ASC');
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if (!empty($onlySectionCodes)) {
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$qb->whereIn('tc.class_section_id', array_map('intval', $onlySectionCodes));
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}
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$rows = $qb->get()->getResultArray();
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$out = [];
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foreach ($rows as $r) {
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$code = (int)$r['class_section_id'];
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$out[$code][] = $r;
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}
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return $this->assignedBySectionCache[$cacheKey] = $out;
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}
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}
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