数据库
建表
DROP TABLE IF EXISTS `yr_cate`;
CREATE TABLE `yr_cate` (
`cateid` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '栏目id',
`catename` varchar(50) NOT NULL COMMENT '栏目名称',
`pid` int(10) NOT NULL,
`path` varchar(200) NOT NULL COMMENT '路径',
`level` int(10) NOT NULL COMMENT '级别',
`model` enum('5','4','3','2','1') NOT NULL COMMENT '1文章，2行情，3公告，4招标，5资料',
PRIMARY KEY (`cateid`)
) ENGINE=InnoDB AUTO_INCREMENT=30 DEFAULT CHARSET=utf8;
1.png
2.png
插入几条数据
-- ----------------------------
-- Records of yr_cate
-- ----------------------------
INSERT INTO `yr_cate` VALUES ('1', '行业动态', '0', '0,1', '1', '1');
INSERT INTO `yr_cate` VALUES ('2', '产业观察', '0', '0,2', '1', '1');
INSERT INTO `yr_cate` VALUES ('3', '行业新闻', '1', '0,1,3', '2', '1');
INSERT INTO `yr_cate` VALUES ('4', '协会新闻', '1', '0,1,4', '2', '1');
INSERT INTO `yr_cate` VALUES ('5', '名家专栏', '1', '0,1,5', '2', '1');
INSERT INTO `yr_cate` VALUES ('6', '企业新闻', '1', '0,1,6', '2', '1');
INSERT INTO `yr_cate` VALUES ('7', '行情价格', '0', '0,7', '1', '2');
INSERT INTO `yr_cate` VALUES ('8', '品种快讯', '7', '0,7,8', '2', '2');
INSERT INTO `yr_cate` VALUES ('17', '品种分析', '7', '0,7,17', '2', '1');
INSERT INTO `yr_cate` VALUES ('18', '价格指数', '7', '0,7,18', '2', '2');
INSERT INTO `yr_cate` VALUES ('20', '招标采购', '0', '0,20', '1', '4');
INSERT INTO `yr_cate` VALUES ('21', '中标公告', '20', '0,20,21', '2', '1');
INSERT INTO `yr_cate` VALUES ('22', '招标信息', '20', '0,20,22', '2', '4');
INSERT INTO `yr_cate` VALUES ('23', '资料库', '0', '0,23', '1', '5');
INSERT INTO `yr_cate` VALUES ('25', '名人名企', '0', '0,25', '1', '1');
INSERT INTO `yr_cate` VALUES ('27', '金融服务', '0', '0,27', '1', '1');
控制器
cate.php
order('cateid asc')->select();
$this->assign('cateslist',$cateslist);
return $this->fetch();
}
//添加分类
public function cateadd()
{
//查询已添加的分类数据
$cateslist=db('cate')->field(['*','concat(path,",",cateid)'=>'paths'])->order('paths asc')->select();
foreach($cateslist as $k=>$v){
$cateslist[$k]['catename']=str_repeat("|------", $v['level']).$v['catename'];
}
$this->assign('cateslist',$cateslist);
//添加分类数据
if(request()->isPost()){
$m=model('cate');
$data = [
'catename' => input('catename'),
'pid' => input('pid'),
'model' => input('model'),
];
if($data['pid'] == 0){
$data['level'] = 1;
$data['path'] = '0';
//验证数据
$validate = validate('Cate');
if(!$validate->scene('add')->check($data)){
$this->error($validate->getError());
}
if($m->save($data)){
$reId=$m->cateid;
if($reId){
$m->where('cateid',$reId)->update(['path'=> $data['path'].','.$reId]);
$this->success('更新成功','cate/cateslist');
}
}else {
$this->error('更新失败');
}
}else{
$cates=$m->find($data['pid']);
$data['path']=$cates['path'];
$data['level']= substr_count($data['path'],',') + 1;
//验证数据
$validate = validate('Cate');
if(!$validate->scene('add')->check($data)){
$this->error($validate->getError());
}
$re=$m->save($data);
if($re){
$reId=$m->cateid;
if($reId){
$m->where('cateid',$reId)->update(['path'=> $cates['path'].','.$reId]);
$this->success('更新成功','cate/cateslist');
}
}else {
$this->error('更新失败');
}
}
}
return $this->fetch();
}
public function cate_del(){
$id=$_GET['id'];
$m=model('cate');
$data=$m->where('pid','=',$id)->find();
if($data){
$str="该分类存在下级栏目，无法删除";
echo json_encode($str);
}else{
//$re=$m->delete($id);
$re=$m->destroy($id);
if($re){
echo 1;
}
}
}
//ajax获取分类信息
public function cate_ajax(){
$m=model('cate');
$data=$m->field(['cateid as id','catename as name','pid'])->select();
echo json_encode($data);
}
}
上文cateadd为添加分类处理方法，也有删除等方法。
模板文件
cate_add.html 添加分类view文件
添加产品分类
{include file="common/_footer" /}
cateslist.html 分类列表view文件
{include file="common/_meta" /}
产品分类
{include file="common/_header" /}
{include file="common/_menu" /}
*点击分类名称，可立即删除
{include file="common/_footer" /}