我正在用Laravel和Datatables做一个项目。我用的是雄辩。 数据表正确填充表，但是当我进行(数据表(搜索时，我收到错误：
下一页 Illuminate\Database\QueryException： SQLSTATE[42S22]： 列不是 找到：1054 "其中"中的未知列"sector.location.location_name" 条款'...
你能推荐一个解决方案吗？
表结构：
--change_logs表
id
username
sector_id
operation_id
layer_category_id
object_name
--部门表
id
sector_name
location_id
--位置表
id
location_name
在数据表中 Ajax 我使用
{数据："sector.location.location_name"，名称： ">sector.location.location_name"}，我收到错误"列不是 找到：1054 未知列">sector.location.location_name" 'where条款'">
如果我使用表的名称而不是这样的对象：
{data: 'sector.location.location_name', name: '**sectors.locations.location_name**'},
我仍然收到错误：
找不到列：1054 未知列 "where"子句中的">sectors.locations.location_name">
数据在数据表表中正确加载，但搜索不起作用
//changelogs.blade.php
var table = $('.data-table').DataTable({
processing: true,
serverSide: true,
ajax: "{{ route('change_logs.index') }}",
columns: [
//{data: 'DT_RowIndex', name: 'DT_RowIndex'},
{data: 'id', name: 'change_logs.id'},
{data: 'user.name', name: 'user.name'},
{data: 'user.username', name: 'user.username'},
{data: 'sector.location.location_name', name: 'sector.location.location_name'},
{data: 'sector.sector_name', name: 'sector.sector_name'},
{data: 'layer_category.layer.layer_name', name: 'layer_category.layer.layer_name'},
{data: 'layer_category.category_name', name: 'layer_category.category_name'},
{data: 'object_name', name: 'object_name'},
{data: 'operation.operation_name', name: 'operation.operation_name'},
{data: 'action', name: 'action', orderable: false, searchable: false},
]
});
//controller
$data = ChangeLog::with('user','sector','operation','layer_category' )->select('change_logs.*');
return Datatables::of($data)
//class ChangeLog
<?php
namespace App;
use IlluminateDatabaseEloquentModel;
class ChangeLog extends Model
{
protected $fillable = [
'username', 'sector_id','operation_id', 'layer_category_id', 'object_name'
];
protected $hidden = [
];
public function location()
{
return $this->belongsTo('AppLocation');
}
public function user()
{
//return $this->belongsTo('AppUser');
return $this->belongsTo('AppUser', 'username', 'username');
}
public function sector()
{
return $this->belongsTo('AppSector')->with('location');
}
public function operation()
{
return $this->belongsTo('AppOperation');
}
public function layer_category()
{
return $this->belongsTo('AppLayerCategory')->with('layer');
}
}
//class Sector
<?php
namespace App;
use IlluminateDatabaseEloquentModel;
class Sector extends Model
{
protected $fillable = [
'sector_name','location_id',
];
protected $hidden = [
];
public function location()
{
return $this->belongsTo('AppLocation');
}
}
//class Location
<?php
namespace App;
use IlluminateDatabaseEloquentModel;
class Location extends Model
{
protected $fillable = [
'location_name',
];
protected $hidden = [
];
public function sectors()
{
return $this->hasMany('AppSector');
}
}
您是否定义了将位置映射到扇区的关系？从您的表结构来看，一个位置可以有多个扇区，这就是我们在扇区中具有location_id的原因。因此，您应该在相应的模型中定义此关系。
应用\扇区.php
...
public function location() {
return $this->belongsTo('AppLocation');
}
应用\位置.php
...
public function location() {
return $this->hasMany('AppSector');
}