实战：新闻缩略图模块
1.控制器类代码
<?php
namespace app\admin\controller;
use app\admin\controller\Common;
use app\admin\model\NewsModel;
use app\admin\model\NewsPicModel;
use think\facade\Request;
use think\facade\Session;
class NewsPic extends Common
{
public function index()
{
// 实例化模型
$newPic = new NewsPicModel();
$pics = $newPic->order('id', 'desc')->paginate(6);
$this->view->pics = $pics;
//渲染新闻缩略图列表
return $this->fetch();
}
public function add()
{
//查询所有新闻的数据
$news = NewsModel::all();
//将数据赋值给模板
$this->view->news = $news;
//渲染新闻缩略图添加界面
return $this->fetch();
}
public function upload()
{
//获取上传图片的信息
$file = Request::file('file');
// 验证图片并移动到指定目录
if ($info = $file->validate(['ext' => 'jpg,jpeg,png,gif'])->move('upload')) {
$fileName = '/upload/' . $info->getSaveName();
return json([1, '上传成功', 'data' => $fileName]);
} else {
// 返回上传失败错误信息
return $file->getError();
}
}
public function DoAdd()
{
// 获取提交的数据
$data = Request::param();
$data['time'] = time();
$data['username'] = Session::get('username');
$newPic = new NewsPicModel();
if ($newPic->save($data)) {
return ['res' => 1, 'msg' => '发布成功！'];
} else {
return ['res' => 0, 'msg' => '发布失败！'];
}
}
public function del()
{
$picId = Request::param('id');
$newPic = new NewsPicModel();
if ($newPic->destroy($picId)){
return ['res' => 1, 'msg' => '删除成功！'];
}else {
return ['res' => 0, 'msg' => '删除失败！'];
}
}
}
2.模型类代码
<?php
namespace app\admin\model;
use \think\Model;
class NewsPicModel extends Model
{
protected $table='news_pic';
protected $pk='id';
}
3.视图类代码
（1）增加页面add.html
<!doctype html>
<html lang="en">
{include file="/public/header"}
<body>
<div class="x-body">
<form class="layui-form">
<div class="layui-form-item">
<label for="news_id" class="layui-form-label">
<span class="x-red">*</span>选择新闻
</label>
<div class="layui-input-inline">
<select name="news_id" id="news_id">
{volist name="news" id="new"}
<option value="{$new.id}">{$new.title}</option>
{/volist}
</select>
</div>
</div>
<div class="layui-form-item">
<label class="layui-form-label">新闻图片</label>
<div class="layui-input-block">
<button type="button" class="layui-btn" id="upload" >图片上传</button>
<div class="layui-upload-list" id="thumbnail"></div>
</div>
</div>
<div class="layui-form-item">
<label for="L_repass" class="layui-form-label">
</label>
<button class="layui-btn" lay-filter="add" lay-submit="">
增加
</button>
</div>
</form>
</div>
<script src="/static/admin/lib/layui/layui.js"></script>
<script>
layui.use(['form', 'layer','upload'], function () {
$ = layui.jquery;
var form = layui.form
, layer = layui.layer;
var $ = layui.jquery,
upload = layui.upload;
upload.render({
elem: '#upload',
url: "{:url('upload')}",
multiple: true,
before: function(obj){
//预读本地文件示例，不支持ie8
obj.preview(function(index, file, result){
$('#thumbnail').append('<img src="'+ result +'" alt="'+ file.name +'" class="layui-upload-img">')
});
},
done: function(res){
//上传完毕
$('#thumbnail').append('<input type="hidden" name="pic" id="pic" value="'+res.data +'" />')
}
});
//监听提交
form.on('submit(add)', function(data){
console.log(data);
//发异步，把数据提交给php
$.post('{:url(\'DoAdd\')}',{
'news_id':$('#news_id').val(),
'pic':$('#pic').val()
},function (data) {
if (data.res == 1){
layer.alert(data.msg, {icon: 6},function () {
// 获得frame索引
var index = parent.layer.getFrameIndex(window.name);
//关闭当前frame
parent.layer.close(index);
});
}else{
layer.alert(data.msg, {icon: 6},function () {
// 获得frame索引
var index = parent.layer.getFrameIndex(window.name);
//关闭当前frame
parent.layer.close(index);
});
}
})
return false;
});
});
</script>
</body>
</html>
(2)详情页index.html
<!doctype html>
<html lang="en">
{include file="/public/header"}
<body>
<div class="x-nav">
<span class="layui-breadcrumb">
<a href="">首页</a>
<a href="">演示</a>
<a>
<cite>导航元素</cite></a>
</span>
<a class="layui-btn layui-btn-small" style="line-height:1.6em;margin-top:3px;float:right" href="javascript:location.replace(location.href);" title="刷新">
<i class="layui-icon" style="line-height:30px">ဂ</i></a>
</div>
<div class="x-body">
<xblock>
<button class="layui-btn" onclick="x_admin_show('添加用户','{:url(\'NewsPic/add\')}')"><i class="layui-icon"></i>添加</button>
<span class="x-right" style="line-height:40px">共有数据：88 条</span>
</xblock>
<table class="layui-table">
<thead>
<tr>
<th>图片ID</th>
<th>所属新闻</th>
<th>图片</th>
<th>发布管理员</th>
<th>发布日期</th>
<th >操作</th>
</tr>
</thead>
<tbody>
{volist name="pics" id="pic"}
<tr>
<td>{$pic.id}</td>
<td>{:GetTitle($pic.news_id)}</td>
<td><img src="{$pic.pic}"></td>
<td>{$pic.username}</td>
<td>{$pic.time|date="Y-m-d"}</td>
<td class="td-manage">
<a title="删除" onclick="member_del(this,'{$pic.id}')" href="javascript:;">
<i class="layui-icon"></i>
</a>
</td>
</tr>
{/volist}
</tbody>
</table>
<div class="page">
<div>
</div>
</div>
</div>
<script>
layui.use('laydate', function(){
var laydate = layui.laydate;
//执行一个laydate实例
laydate.render({
elem: '#start' //指定元素
});
//执行一个laydate实例
laydate.render({
elem: '#end' //指定元素
});
});
/*用户-删除*/
function member_del(obj,id){
layer.confirm('确认要删除吗？',function(index){
//发异步删除数据
$.get('{:url(\'del\')}','id='+id,function (data) {
if (data.res==1){
$(obj).parents("tr").remove();
layer.msg('已删除!',{icon:1,time:1000});
}
})
});
}
</script>
</body>
</html>
4.运行结果
