Laravel Datatables search on nested Relationship - laravel

Question

I'm currently using datatabels 7.0 and Laravel 5.4
data in my grid is showing correctly but when I want to search on nested relationship column I got below error:
SQLSTATE[42S22]: Column not found: 1054 Unknown column 'course_semester.semester.name' in 'where clause' (SQL: select count(*) as aggregate from (select '1' as `row_count` from `videos` where LOWER(`videos`.`id`) LIKE %%te%% and LOWER(`videos`.`name`) LIKE %%te%% and LOWER(`course_semester`.`semester`.`name`) LIKE %%te%%) count_row_table)
Here is my code
Controller
$videos = Video::with(['course_semester' => function ($query) {
return $query->with('course', 'semester');
}])->select('videos.*');
return Datatables::of($videos)
->addColumn('check', '<input type="checkbox" name="selected-videos" value="{{$id}}">')
->escapeColumns([])
->make(true);
Javascript
columns: [
{ data: 'check' , name: 'check',orderable: false, searchable: false },
{ data: 'id', name: 'videos.id' },
{ data: 'name', name: 'videos.name' },
{ data: 'course_semester.semester.name', name: 'course_semester.semester.name'},
{ data: 'course_semester.course.name', name: 'course_semester.course.name'},
{ data: 'status', name: 'videos.status' },
{ data: 'comment', name: 'videos.comment' },
{ data: 'video_date', name: 'videos.video_date' },
]
Can anyone help me and notice my problem?
Thanks in advance.

Answer 1

Because of using select() here, you do not load the relationship. Also, use dot syntax for nested eager loading:
$videos = Video::with(['course_semester', 'course_semester.course'])

Answer 2

1- dataTable function
public function dataTable($query)
{
return datatables()
->eloquent($query)
->addColumn('BulkSelection', function ($category)
{
->addColumn('company', function ($category)
{
return $category->company ? $category->company->name : 'No Company';
})
->rawColumns(['action', 'company', 'createdAt','BulkSelection']);
}
2- query function
public function query(Category $model)
{
return $model->with('company:id,name')->select('categories.*')->newQuery();
}
3- getColumns function
$getCols = [
'id',
'name',
'company'=> [
'data'=>'company',
'name'=>'company.name'
],
'createdAt' => [
'name'=>'created_at',
'searchable' => false
],
'action' => [
'exportable' => false,
'searchable'=>false,
'orderable' => false
]
];
return $getCols;

Answer 3

If you just need to load the data from relation tables, use the below code
$videos = Video::with('course_semester','course', 'semester')->select('videos.*');
return Datatables::eloquent($videos)
->addColumn('check', function(Video $v){
return '<input type="checkbox" name="selected-videos" value="{{$v->id}}">'
})
->rawColumns(['check'])
->make(true);
And in script, you can call relation values as ,
{data: 'course_semester.id'},
{data: 'course.name'},
{data: 'semester.name'},

Answer 4

$getCols = [
'title',
'Images' => [
'name'=>'images_count',
'data'=>'images_count',
'searchable'=>false
],
'price' => ['name'=>'start_price', 'data'=>'start_price'],
'reserve_price',
'Category' => [
'data'=>'show_category',
'name'=>'categories.name',
'searchable'=>false
],
'created_by' => [
'name'=>'user.name',
],
'createdAt' => [
'name'=>'created_at',
'searchable' => false
],
'action' => [
'exportable' => false,
'searchable'=>false,
'orderable' => false
]