我使用TypeAhead的自动完整插件在我的主刀片中应用了搜索字段。
我的路线：
Route::get('search',array('as'=>'search','uses'=>'AutoCompleteController@search'));
Route::get('autocomplete',array('as'=>'autocomplete','uses'=>'AutoCompleteController@autocomplete'));
我的控制器：
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use App\Product;
class AutoCompleteController extends MainController {
public function search()
{
return view('master');
}
public function autocomplete(Request $request)
{
if( !empty(request('query'))){
$data = Product::select("title")
->where("title","LIKE","%{$request->input('query')}%")
->get();
$dataJson =$data->toJson();
return view('master', compact('dataJson'));
}else{
return view ('master');
}
}
}
我的主刀：
<head>
<meta charset="UTF-8">
<title>@if (!empty($title) )
{{ $title }}
@else
MySite
@endif</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">
<link href="{{ asset('css/style.css') }}" rel="stylesheet" type="text/css"/>
<link href="{{ asset('carousel.css') }}" rel="stylesheet"/>
<script>var BASE_URL = "{{ url('')}}/";</script>
</head>
<header>
<!-- NAVBAR
================================================== -->
<body>
<div class="navbar-wrapper">
<div class="container-fluid">
<nav class="navbar navbar-inverse navbar-static-top">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="{{ url('/')}}">MyHero</a>
</div>
<div id="navbar" class="navbar-collapse collapse" >
<ul class="nav navbar-nav">
@if( !empty($menu))
@foreach($menu as $item)
<li><a href="{{ url($item['url'])}}">{{ $item['link'] }}</a></li>
@endforeach
@endif
<li><a href="{{ url('shop')}}">Shop</a></li>
<li>
<a href="{{ url('shop/checkout')}}">
<img width="20" src="{{ asset('images/shopping-cart.png')}}">
<div id="total-cart">
@if(! Cart::isEmpty())
{{Cart::getTotalQuantity()}}
@endif
</div>
</a>
</li>
</ul>
<ul class="nav navbar-nav navbar-right">
@if(Session::has('user_id'))
<li><a href="{{ url('user/edit')}}">{{ Session::get('user_name') }}</a></li>
@if( Session::has('is_admin'))
<li><a href="{{ url('cms/dashboard')}}">CMS DASHBOARD</a></li>
@endif
<li><a href="{{ url('user/logout')}}">Logout</a></li>
@else
<li><a href="{{ url('user/signin')}}">Sign In</a></li>
<li><a href="{{ url('user/signup')}}">Sign Up</a></li>
@endif
</ul>
<div class="row">
<div class="container">
<form method="GET" action="" class="navbar-form navbar-right">
<div class="input-group">
<input type="text" name="find" class="typeahead form-control" aria-label="Search here..." placeholder="Search here..." autocomplete="off" value="">
<div class="input-group-btn">
<button type="submit" class="btn btn-default" style="height: 34px; width: 40px" ><i class="glyphicon glyphicon-search"></i></button>
</div>
</div>
</form>
</div>
</div>
</nav>
</div>
</div>
</header> <br><br><br><br>
@if($dataJson)
@foreach(json_decode($dataJson, true) as $value)
{{ $value['record1']['record 2'] }}
@endforeach
@endif
<div class="container" >@yield('carousel')</div> <br><br>
<main>
<div class="container">
@include ('inc.sm')
@include ('inc.errors')
@yield('content')
</div>
</main>
<br><br><br>
<footer>
<div class="container">
<hr>
<div class="row">
<div class="col-md-12" >
<p class="text-center" style="font-size: 18px;" >MyHero © {{ date('Y') }} </p>
</div>
</div>
</div>
</footer>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-3-typeahead/4.0.1/bootstrap3-typeahead.min.js"></script>
<script src="{{ asset('js/script.js') }}" type="text/javascript"></script>
<script type="text/javascript">
var path = "{{ route('autocomplete') }}";
$('input.typeahead').typeahead({
source: function (query, process) {
return $.get(path, { query: query }, function (data) {
return process(data);
});
}
});
</script>
尝试从搜索字段返回搜索结果时，我的主刀片视图中出现的错误为Undefined variable: dataJson。
我尝试做dd（）和print_r，但它没有响应。当我尝试从搜索字段返回搜索结果时，我在主刀片视图中得到的错误为Undefined variable: dataJson。
我尝试做dd（）和print_r，但没有响应。
答案 0 :(得分：0)
首先想法是返回变量，即使它是null或空。 （在控制器上）
else { return view ('master', ['dataJson' => false]);
但我觉得最好检查一下你的刀片上的变量是否为空
@if(!empty($dataJson))
答案 1 :(得分：0)
将@if($dataJson)更改为@if(isset($dataJson))
了解更多信息;点击此处：PHP: "Notice: Undefined variable", "Notice: Undefined index", and "Notice: Undefined offset"