71 lines
2.1 KiB
PHP
71 lines
2.1 KiB
PHP
<?php
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namespace App\Models;
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use Illuminate\Database\Eloquent\Factories\HasFactory;
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use Illuminate\Database\Eloquent\Model;
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use Illuminate\Database\Eloquent\Relations\BelongsTo;
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use Illuminate\Database\Eloquent\Relations\BelongsToMany;
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use Illuminate\Database\Eloquent\Relations\HasMany;
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use Illuminate\Database\Eloquent\SoftDeletes;
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class StudyGroup extends Model
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{
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use HasFactory, SoftDeletes;
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protected $fillable = [
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'leader_id',
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'name',
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];
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public function isLeader(Student $student): bool
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{
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return $this->leader_id === $student->id;
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}
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public function courses(): BelongsToMany
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{
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return $this->belongsToMany(Course::class, 'study_group_courses');
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}
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public function leader(): BelongsTo
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{
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return $this->belongsTo(Student::class, 'leader_id');
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}
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public function members(): HasMany
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{
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return $this->hasMany(StudyGroupMember::class);
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}
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public function students(): BelongsToMany
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{
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return $this->belongsToMany(Student::class, 'study_group_members');
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}
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public static function getBusyStudentIdsForCourses(array $courseIds, ?int $excludeGroupId = null): array
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{
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$busyMemberIds = StudyGroupMember::whereHas(
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'studyGroup',
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function ($q) use ($courseIds, $excludeGroupId) {
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if ($excludeGroupId) {
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$q->where('study_groups.id', '!=', $excludeGroupId);
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}
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$q->whereHas('courses', function ($cq) use ($courseIds) {
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$cq->whereIn('courses.id', $courseIds);
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});
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}
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)->pluck('student_id')->toArray();
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$busyLeaderIds = static::query()
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->when($excludeGroupId, fn ($q) => $q->where('id', '!=', $excludeGroupId))
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->whereHas('courses', function ($cq) use ($courseIds) {
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$cq->whereIn('courses.id', $courseIds);
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})
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->pluck('leader_id')
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->toArray();
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return array_unique(array_filter(array_merge($busyMemberIds, $busyLeaderIds)));
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}
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}
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