本文实例讲述了yii2使用dropdownlist实现地区三级联动功能的方法。分享给大家供大家参考，具体如下：
视图部分：
['index'], 'method' => 'get', 'options' => ['class' => 'form-inline'] ]); ?> field($model, 'cityName', ['options' => ['class' => 'form-group col-lg-2']])->dropDownList(ArrayHelper::map($cities, 'id', 'name'), ['prompt' => '请选择城市'])->label('请选择城市', ['class' => 'sr-only']) ?> field($model, 'areaName', ['options' => ['class' => 'form-group col-lg-2']])->dropDownList(ArrayHelper::map($areas, 'id', 'name'), ['prompt' => '请选择区县'])->label('请选择区县', ['class' => 'sr-only']) ?> field($model, 'communityName', ['options' => ['class' => 'form-group col-lg-2']])->dropDownList(ArrayHelper::map($communities, 'id', 'name'), ['prompt' => '请选择小区'])->label('请选择小区', ['class' => 'sr-only']) ?>'btn btn-primary']) ?>registerJs(' //市地址改变 $("#itemsearch-cityname").change(function() { //市id值 var cityid = $(this).val(); $("#itemsearch-areaname").html(""); $("#itemsearch-communityname").html(""); if (cityid > 0) { getArea(cityid); } }); //区地址改变 $("#itemsearch-areaname").change(function() { //区id值 var areaid = $(this).val(); $("#itemsearch-communityname").html(""); if (areaid > 0) { getCommunity(areaid); } }); //获取市下面的区列表 function getArea(id) { var href = "' . Url::to(['/service/base/get-area-list'], true). '"; $.ajax({ "type" : "GET", "url" : href, "data" : {id : id}, success : function(d) { $("#itemsearch-areaname").append(d); } }); } //获取区下面的小区列表 function getCommunity(id) { var href = "' . Url::to(['/service/base/get-community-list'], true) . '"; $.ajax({ "type" : "GET", "url" : href, "data" : {id : id}, success : function(d) { $("#itemsearch-communityname").append(d); } }); } //搜索小区 $("#search-community").click(function() { var word = $("#keyword").val(); var areaid = $("#itemsearch-areaname option:selected").val(); var href = "' . Url::to(['/service/base/search-community'], true) . '"; if (areaid > 0) { $.ajax({ "type" : "GET", "url" : href, "data" : {id : areaid, word : word}, success : function(d) { $("#itemsearch-communityname").html(d); } }); } }); '); ?>
模型部分：
就是我们常用的ajax请求,当然php中需要直接组合成这样的结构直接用,$form->field($model, $var)中的变量数据表中不一定有,得在模型中自己定义,并设置安全字段,而且搜索模型也可能需要修改成自己需要的样子,模型可能要这样：
class HuangYeError extends \yii\db\ActiveRecord
{
public $cityName;
public $areaName;
public $communityName;
public $group;
public $cate;
/**
* @inheritdoc
*/
public static function tableName()
{
return 'll_hy_huangye_error';
}
public static function getDb()
{
return Yii::$app->get('dbnhuangye');
}
}之前是多表,需要使用jjoinWith()连表,后来被我全部转化为单表了,多表实在是慢,能转化成单表就用单表吧：
class HuangYeErrorSearch extends HuangYeError
{
const PAGE_SIZE = 20;
public $communityName;
public $startTime;
public $endTime;
/**
* @inheritdoc
*/
public function rules()
{
return [
[['id', 'serviceid', 'userid', 'categoryid', 'communityid', 'sortorder', 'ctime', 'utime', 'status'], 'integer'],
[['username', 'name', 'logo', 'phone', 'address', 'content', 'error', 'communityName', 'startTime', 'endTime'], 'safe'],
];
}
/**
* @inheritdoc
*/
public function scenarios()
{
// bypass scenarios() implementation in the parent class
return Model::scenarios();
}
/**
* Creates data provider instance with search query applied
*
* @param array $params
*
* @return ActiveDataProvider
*/
public function search($params)
{
$query = HuangYeError::find();
//status == 9 删除状态
$condition = ' `status` != :status';
$p[':status'] = 9;
$query->where($condition, $p);
$dataProvider = new ActiveDataProvider([
'query' => $query,
'pagination' => [
'pageSize' => self::PAGE_SIZE,
],
]);
$this->load($params);
if (!$this->validate()) {
// uncomment the following line if you do not want to any records when validation fails
// $query->where('0=1');
return $dataProvider;
}
$query->andFilterWhere([
'userid' => $this->userid
]);
$query->andFilterWhere(['like', 'username', $this->username])
->andFilterWhere(['like', 'name', $this->name])
->andFilterWhere(['like', 'phone', $this->phone])
->andFilterWhere(['like', 'address', $this->address])
->andFilterWhere(['like', 'content', $this->content])
->andFilterWhere(['ll_hy_huangye_error.status' => $this->status])
->andFilterWhere(['ll_hy_huangye_error.categoryid' => $this->categoryid])
->andFilterWhere(['between', 'ctime', strtotime($this->startTime . '0:0:0'), strtotime($this->endTime . '23:59:59')])
->andFilterWhere(['like', 'error', $this->error]);
if (intval($this->communityName)) {
$query->andFilterWhere(['ll_hy_huangye_error.communityid' => intval($this->communityName)]);
}
$order = ' `ctime` DESC';
$query->orderBy($order);
return $dataProvider;
}
}控制器中写比较简单一点,直接调用就行了：
/**
* ajax请求小区
*
* @param $id
* @return string
*/
public function actionGetCommunityList($id)
{
$option = '';
$result = self::getCommunity($id);
if ($result) {
foreach ($result as $value) {
$option .= '';
}
} else {
$option .= '';
}
echo $option;
}希望本文所述对大家基于Yii框架的PHP程序设计有所帮助。
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