我正在使用jQuery datatables插件并使用foreach循环添加列valores_receber(values_to_receive),这些循环执行总和但是以下面的代码中可以看到的单独方式。
public function anyDataReceber() {
$clientes = Partner::whereHas('faturamentos', function($q){
$q->where('status', '<>', 'CANCELADO');
})
->orWhereHas('faturamentosLivres', function ($q) {
$q->where('status','<>','CANCELADO');
})
->with('faturamentos')
->with('faturamentosLivres');
return Datatables::of($clientes)
->addColumn('valores_receber', function ($clientes) {
$total = 0;
foreach($clientes->faturamentos as $fatura1) {
if ($fatura1->status != 'CANCELADO') $total += $fatura1->total_usd - $fatura1->valor_pago;
}
foreach($clientes->faturamentosLivres as $fatura2) {
if ($fatura2->status != 'CANCELADO') $total += $fatura2->total_usd - $fatura2->valor_pago;
}
return number_format($total,2,',','.');
})
->addColumn('action', function ($clientes) {
$actions = '';
$actions = '<a href="/admin/financeiro-matriz/contas-receber/'.$clientes->id.'" class="btn btn-xs btn-primary"><i class="fa fa-eye"></i> Visualizar</a>';
return $actions;
})
->make(true);
}
这里的问题是数据表无法对列valores_receber进行排序,因为Eloquent的结果查询中不存在此列。
我研究了mySQL中的SUM()函数,但我无法使用Eloquent和表关系来构建解决方案。
我检查了以下答案,这些答案应该在正确的轨道上,但是使用的是普通的SQL而且从我研究的它需要某种连接或联合语句,但是如何在Eloquent中执行它?
因此,要使数据表能够对列valores_receber进行排序,我需要该列显示在某种Eloquent语句的结果中。
我想要实现的目标是:
编辑:我正在使用@ d1c1pl3建议的DB:raw(),但我仍然想知道使用Eloquent的优雅解决方案。接下来是我的丑陋尝试,使用原始查询并且基于这个答案:https://stackoverflow.com/a/7432219/2465086
public function anyDataReceber() {
// 1 - getting all IDs of clients that have faturamentos or faturamentosLivres
$clientes = Partner::whereHas('faturamentos', function($q){
$q->where('status', '<>', 'CANCELADO');
})
->orWhereHas('faturamentosLivres', function ($q) {
$q->where('status','<>','CANCELADO');
})
->with('faturamentos')
->with('faturamentosLivres')
->pluck('id')
->toArray();
// 2 - Converting to string for use in the query
$ids = implode(',',$clientes);
// 3 - the ugly query that I want to do using Eloquent. It filters by the status and filters by clients´ ids returned before. It is not appealing either because it uses subselects and a join
$result = DB::select(DB::raw(
'SELECT partners.client, cliente_id, (SUM(t.total_usd) - SUM(t.valor_pago)) AS valores_receber
FROM (SELECT cliente_id, total_usd, valor_pago FROM faturamentos WHERE status <> "CANCELADO" AND cliente_id IN ('.$ids.')
UNION ALL
SELECT cliente_id, total_usd, valor_pago FROM faturamentos_livres WHERE status <> "CANCELADO" AND cliente_id IN ('.$ids.')) t
JOIN partners ON partners.id= cliente_id
GROUP BY cliente_id'
));
// 4 - converting to Collection because the Datatables class expects it
$result = collect($result);
// 5 - The return is the only part that is easy to read and feels like it is in the right track
return Datatables::of($result)
->editColumn('valores_receber', function ($result) {
return number_format($result->valores_receber,2,',','.');
})
->addColumn('action', function ($result) {
$actions = '';
$actions = '<a href="/admin/financeiro-matriz/contas-receber/'.$result->cliente_id.'" class="btn btn-xs btn-primary"><i class="fa fa-eye"></i> Visualizar</a>';
return $actions;
})
->make(true);
}