只有当存在post值时，如何在Laravel中使用闭包检查条件

我试图查询数据库并在闭包函数中进行筛选，我的模型（简化）如下所示：

table1  :   id, ho, hod_id

hodet   :   id, description, dept_id

departments :   id, name, deptcode

$ho

和

$deptcode

将通过post方法实现

如果没有post值，则需要返回所有数据。这很好用。虽然$ho有数据，但它运行良好。当deptcode有数据时，它也会返回不需要的数据。请纠正我

我的代码如下：

$hoaListQuery = table1::where ([["hod_id", ">", "0"]]);
        if($ho != "") {
            $hoaListQuery = $hoaListQuery->where('ho', 'like', '%'.$ho.'%');
        }
        $hoaListQuery = $hoaListQuery
            ->whereHas([
                "hodet" => function($inHodetQuery) use($deptcode)  {
                    $inHodetQuery->whereHas([
                        "departments" => function ($inDeptQuery) use($deptcode) {
                            $inDeptQuery->when($deptcode != "", function ($q) use($deptcode) {
                                return $q->where('deptcode', '=', $deptcode);
                            });
                            $inDeptQuery->select("id", "name", "deptcode");
                        }
                    ])->with([
                        "departments" => function ($inDeptQuery) use($deptcode) {
                            $inDeptQuery->when($deptcode != "", function ($q) use($deptcode) {
                                return $q->where('deptcode', '=', $deptcode);
                            });
                            $inDeptQuery->select("id", "name", "deptcode");
                        }
                    ])
                    ->select("id", "description", "dept_id");
                }
            ])
            ->with([
                "hodet" => function($inHodetQuery) use($deptcode)  {
                    $inHodetQuery->whereHas([
                        "departments" => function ($inDeptQuery) use($deptcode) {
                            $inDeptQuery->when($deptcode != "", function ($q) use($deptcode) {
                                return $q->where('deptcode', '=', $deptcode);
                            });
                            $inDeptQuery->select("id", "name", "deptcode");
                        }
                    ])->with([
                        "departments" => function ($inDeptQuery) use($deptcode) {
                            $inDeptQuery->when($deptcode != "", function ($q) use($deptcode) {
                                return $q->where('deptcode', '=', $deptcode);
                            });
                            $inDeptQuery->select("id", "name", "deptcode");
                        }
                    ])->select("id", "description", "dept_id");
                }
            ])
            ->select("id", "ho", "hod_id");
        $hoaList = $hoaListQuery->get();

---

提前感谢。

我通过如下更改代码解决了这个问题（whereHas用法在我的问题中是错误的。后来我发现）

    $hoaListQuery = table1::where ([["hod_id", ">", "0"]]);
    if($ho != "") {
        $hoaListQuery = $hoaListQuery->where('ho', 'like', '%'.$ho.'%');
    }
    $hoaListQuery = $hoaListQuery
        ->whereHas("hodet", function($inHodQuery) use($deptcode)  {
                $inHodQuery->whereHas("departments", function ($inDeptQuery) use($deptcode) {
                        $inDeptQuery->when($deptcode != "", function ($q) use($deptcode) {
                            return $q->where('deptcode', '=', $deptcode);
                        });
                    }
                )->with([
                    "departments" => function ($inDeptQuery) use($deptcode) {
                        $inDeptQuery->when($deptcode != "", function ($q) use($deptcode) {
                            return $q->where('deptcode', '=', $deptcode);
                        });
                    }
                ]);
            }
        )
        ->with([
            "hodet" => function($inHodQuery) use($deptcode)  {
                $inHodQuery->with([
                    "departments" => function ($inDeptQuery) use($deptcode) {
                        $inDeptQuery->when($deptcode != "", function ($q) use($deptcode) {
                            return $q->where('deptcode', '=', $deptcode);
                        })->select("id", "name", "deptcode");
                    }
                ])->select("id", "description", "dept_id");
            }
        ])
        ->select("id", "ho", "hod_id");
    $hoaList = $hoaListQuery->get();