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<?php |
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namespace App\Judite\Models; |
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use Illuminate\Support\Facades\DB; |
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use Illuminate\Database\Eloquent\Model; |
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use App\Exceptions\UserHasAlreadyAnInviteInGroupException; |
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class Invitation extends Model |
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{ |
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/** |
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* Get the student of this invitation. |
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* |
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* @return \Illuminate\Database\Eloquent\Relations\BelongsTo |
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*/ |
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public function student() |
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{ |
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return $this->belongsTo(Student::class); |
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} |
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/** |
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* Get the group of this invitation. |
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* |
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* @return \Illuminate\Database\Eloquent\Relations\BelongsTo |
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*/ |
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public function group() |
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{ |
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return $this->belongsTo(Group::class); |
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} |
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/** |
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* Scope a query to get the student amount of invitations in a given course. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param string $studentNumber |
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* @param int $courseId |
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* |
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* @return \Illuminate\Database\Eloquent\Builder |
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*/ |
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public function scopeOfStudentInCourse($query, $studentNumber, $courseId) |
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{ |
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return $query->where([ |
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['course_id', '=', $courseId], |
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['student_number', '=', $studentNumber], |
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]); |
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} |
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/** |
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* Saves new invitation. |
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* |
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* @param $studentNumber |
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* @param $groupId |
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* @param $courseId |
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* |
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* @throws \App\Exceptions\UserHasAlreadyAnInviteInGroupException |
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*/ |
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public function create($studentNumber, $groupId, $courseId) |
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{ |
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$invitation = DB::transaction(function () use ($studentNumber, $courseId) { |
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return Invitation::where([ |
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['student_number', $studentNumber], |
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['course_id', $courseId], |
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]); |
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}); |
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if ($invitation->exists()) { |
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throw new UserHasAlreadyAnInviteInGroupException(); |
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} |
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$this->save(); |
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} |
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} |
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Hackathonners /
swap
