Laravel搜索的时候分页并携带参数

筛选分页每页的条数：

<select class="form-control" id="perPage" name="perPage">
    @foreach ( [10,20,30,50] as $e)
        <option value="{{$e}}" {{ $e==request("perPage") ? "selected" : "" }} >{{$e}}</option>
    @endforeach
</select>

路由：

    Route::get("customer/index/{customer_type?}", "CustomerController@index");

后端接口：

    public function index($customer_type = null) {
        $search = request("search");
        $perPage = request("perPage") ? request("perPage") : 10;
        $customer_type = $customer_type ? $customer_type : request("customer_type");
        $data = Customer::select(["id", "email", "user_name", "nick_name", "phone", "create_time"])
            ->where("customer_type", "=", $customer_type)
            ->where(function ($query) use ($search) {
                if ($search) {
                    $query->where("user_name", "like", "%" . $search . "%")
                        ->orWhere("nick_name", "like", "%" . $search . "%")
                        ->orWhere("phone", "like", "%" . $search . "%")
                        ->orWhere("email", "like", "%" . $search . "%");
                }
            })
            ->orderBy("create_time", "desc")
            ->paginate($perPage);
        //追加额外参数，例如搜索条件
        $appendData = $data->appends(array(
            "search" => $search,
            "customer_type" => $customer_type,
            "perPage" => $perPage,
        ));
        return view("admin/customerList", compact("data"));
    }

效果图：

前端完整代码：

@extends("admin.master")
@section("content")
<div class="wrapper wrapper-content animated fadeInRight">
    <div class="row">
        <div class="col-sm-12">
            <div class="ibox float-e-margins">
                <form class="form-inline" method="get" action="{{ url("/admin/customer/index",[request()->route("customer_type")])}}">
                  <div class="form-group" style="margin-left: 20px">
                    <label for="perPage">每页显示数：</label>
                    <select class="form-control" id="perPage" name="perPage">
                        @foreach ( [10,20,30,50] as $e)
                        <option value="{{$e}}" {{ $e==request("perPage") ? "selected" : "" }} >{{$e}}</option>
                        @endforeach
                    </select>
                </div>
                <div class="form-group" style="margin-left: 20px">
                    <label for="search">模糊搜索：</label>
                    <input type="text" name="search" style="width: 400px" class="form-control" id="search" placeholder="请输入机构名或者邮箱或者电话" value="{{request("search")}}">
                </div>
                <button type="submit" class="btn btn-primary" style="margin-left: 20px">开始搜索</button>
            </form>
            {{-- 表格内容 --}}
            <div class="ibox-content">
                <table class="table table-hover table-bordered table-condensed">
                    <thead>
                        <tr class="success">
                            <th class="text-center">用户ID</th>
                            <th class="text-center">用户电话</th>
                            <th class="text-center">用户邮箱</th>
                            <th class="text-center">用户名</th>
                            <th class="text-center">用户昵称</th>
                            <th class="text-center">注册时间</th>
                            <th class="text-center">操作</th>
                        </tr>
                    </thead>
                    @if ($data->total()>0)

                    <tbody>
                        @foreach ($data as $element)
                        {{-- {{dd($element)}} --}}
                        <tr class="gradeU {{ ($element["status"]==4)?"bg-danger":"" }}">
                            <td>{{$element->id}}</td>
                            <td class="center">{{$element->phone}}</td>
                            <td>{{$element->email}}</td>
                            <td>{{$element->user_name}}</td>
                            <td>{{$element->nick_name}}</td>
                            <td>{{$element->create_time}}</td>
                            <td>
                                <a class="btn btn-info" href="{{ url("admin/customer/getInfo",[$element->id] )}}">详细</a>
                                <a class="btn btn-success" href="{{ url("admin/customer/readCustomer",[$element->id] )}}">修改</a>
                                <a class="btn btn-danger" href="{{ url("admin/customer/softDeleteCustomer",[$element->id] )}}">删除</a>
                            </td>
                        </tr>
                        @endforeach
                    </tbody>
                </table>
                <div class="text-center">{!! $data->render() !!}</div>
                @else
                <tbody>
                    <tr ><td colspan="7"><div class="text-center"><h3>没有查到相关数据！</h3></div></td></tr>
                </tbody>
            </table>
            @endif
        </div>
    </div>
</div>
</div>
</div>
@endsection