现在我使用这个查询来显示下面的结果 查询:
$data['faculty'] = Faculty::select('faculties.id', 'faculties.faculty', 'faculties.slug', 'faculties.status','s.semester','fs.faculty_id')
->join('faculty_semester as fs', 'faculties.id', '=', 'fs.faculty_id')
->join('semesters as s', 's.id', '=', 'fs.semester_id')
->orderBy('faculties.faculty', 'asc')
->get();
显示结果
1 BBA FIRST SEM
2 BBA SECOND SEM
3 BBA FOURTH SEM
4 BBA THIRD SEM
5 BBS SECOND YEAR
6 BBS FIRST YEAR
但我想在组中显示。 如何在 Laravel 上构建组查询以显示结果下方
1 BBA FIRST SEM,
SECOND SEM
THIRD SEM
FOURTH SEM
2 BBS FIRST YEAR
SECOND YEAR
最佳答案
我建议使用预先加载,在模型中声明关系
https://laravel.com/docs/5.5/eloquent-relationships#eager-loading , 这样你就可以避免使用连接..
你试过吗?
$data['faculty'] = Faculty::select('faculties.id', 'faculties.faculty', 'faculties.slug', 'faculties.status','s.semester','fs.faculty_id')
->join('faculty_semester as fs', 'faculties.id', '=', 'fs.faculty_id')
->join('semesters as s', 's.id', '=', 'fs.semester_id')
->groupBy('faculties.faculty')
->get();
关于php - 如何在 Laravel 上构建合并和构建组查询?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47204453/