Laravel实现搜索的时候分页并携带参数

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>

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

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'));
 }

@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] )}}" rel="external nofollow" >详细/a>
        a class="btn btn-success" href="{{ url('admin/customer/readCustomer',[$element->id] )}}" rel="external nofollow" >修改/a>
        a class="btn btn-danger" href="{{ url('admin/customer/softDeleteCustomer',[$element->id] )}}" rel="external nofollow" >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

form class="form-inline" method="get" action="{{ url('dataInfo/channel_form_data',request('id'))}}">
 div class="form-group" style="margin-left: 20px">
  label for="search">状态筛选：/label>
  select name="user_status" class="form-control">
   option>所有状态/option>
   @foreach ($user_status as $key=>$element)
   option value="{{$key}}" {{request('user_status')==$key?'selected':''}}>{{$element}}/option>
   @endforeach
  /select>
  label for="search">模糊搜索：/label>
  input type="text" name="search" style="width: 400px" class="form-control" id="search" placeholder="用户名或者邮箱" value="{{request('search')}}"> 
 /div>
 button type="submit" class="btn btn-primary" style="margin-left: 20px">开始搜索/button>
 a href="{{url('dataInfo/create_channel_user_data',request('id'))}}" rel="external nofollow" class="btn btn-primary" style="float:right;">新增渠道用户/a>
/form>