从数据库中查询多行，但仅在一行中将它们显示在gridview中

分类：编程问答

如何解决从数据库中查询多行，但仅在一行中将它们显示在gridview中

我有4张桌子

设备： 笔记本电脑：ID-PK，laptop_model，laptop_series，laptop_date_acq，状态；

显示：ID-PK，display_model，display_series，display_date_acq，状态；

电话：ID-PK，电话型号，电话系列，电话日期，状态；

UserEquipmentMapping：ID-PK，laptop_id（从表笔记本电脑到FK的ID），display_id（从表显示到FK的ID），phone_id（从表Phone的FK到ID），开始日期，结束日期。

对于每个用户，我正在使用start_date和end_date映射唯一的设备，因此，现在在userequipmentmapping / index中，我为一个用户获得了4行，如下所示：

USER_X-Display_model-NULL-NULL-START_DATE-END_DATE;

USER_X-Display_model-NULL-NULL-START_DATE-NULL;

USER_X-NULL-手机型号-NULL-START_DATE-NULL;

USER_X-NULL-NULL-笔记本电脑型号-START_DATE-NULL;

我希望我的grid_view中的一位用户使用没有end_date的设备。

USER_X-DISPLAY_MODEL-PHONE_MODEL-LAPTOP_MODEL（没有end_date的设备，因为带有end_date的设备不再可用），并且每个用户可以查看分配的所有设备，带有或不带有end_date。

作为yii2的初学者，任何指南都对您有很大帮助。预先谢谢你！

代码如下：

控制器：

<?php

namespace app\controllers;

use Yii;
use app\models\UserEquipmentMapping;
use app\models\UserequipmentmappingSearch;
use yii\web\Controller;
use yii\web\NotFoundHttpException;
use yii\filters\VerbFilter;
use app\models\User;
use app\models\Laptop;
use app\models\Phone;
use app\models\Display;
/**
 * UserequipmentmappingController implements the CRUD actions for UserEquipmentMapping model.
 */
class UserequipmentmappingController extends Controller
{
    /**
     * {@inheritdoc}
     */
    public function behaviors()
    {
        return [
            'verbs' => [
                'class' => VerbFilter::className(),'actions' => [
                    'delete' => ['POST'],],];
    }

    /**
     * Lists all UserEquipmentMapping models.
     * @return mixed
     */
    public function actionIndex()
    {
        $usermodel = new UserEquipmentMapping();
        
        $userquery = $usermodel->getUsers();
        
        $displaymodel = new UserEquipmentMapping();
        $displayquery = $displaymodel->getDisplays();
        
        $phonemodel = new UserEquipmentMapping();
        $phonequery = $phonemodel->getPhones();
        
        $laptopmodel = new UserEquipmentMapping();
        $laptopquery = $laptopmodel->getLaptops();
        #foreach($query as $q)
    #       print_r($q);
#       
#       die;
        
        $searchModel = new UserequipmentmappingSearch();
        $dataProvider = $searchModel->search(Yii::$app->request->queryParams);
                
        return $this->render('index',[
            'searchModel' => $searchModel,'dataProvider' => $dataProvider,'userquery' => $userquery,'displayquery' => $displayquery,'laptopquery'=> $laptopquery,'phonequery'=> $phonequery,]);
    }

    /**
     * Displays a single UserEquipmentMapping model.
     * @param integer $id
     * @return mixed
     * @throws NotFoundHttpException if the model cannot be found
     */
    public function actionView($id)
    {
        return $this->render('view',[
            'model' => $this->findModel($id),]);
    }

    /**
     * Creates a new UserEquipmentMapping model.
     * If creation is successful,the browser will be redirected to the 'view' page.
     * @return mixed
     */
    public function actionCreate()
    {
        $model = new UserEquipmentMapping();
        
        $usermodel = User::find()->all();
        $laptopmodel = Laptop::find()->all();
        $phonemodel = Phone::find()->all();
        $displaymodel = Display::find()->all();
        
        
        
        #die;
        #print_r(Yii::$app->request->post()); die;
        if ($model->load(Yii::$app->request->post()) && $model->validate()) {
            //code
            #foreach($laptopmodel as $m){
            #print_r($m->status );
            #print_r($model->load(Yii::$app->request->post()));
            #print_r($model);
            #print_r($model->laptop_id);
            #print_r($laptopmodel);
            #die;
            if($model->laptop_id)
            {
                $laptop = Laptop::findOne($model->laptop_id);
                $laptop->status = Laptop::STATUS_ASSIGNED;
                $laptop->save();
            }
            if($model->display_id)
            {
                $display = Display::findOne($model->display_id);
                $display->status = Display::STATUS_ASSIGNED;
                $display->save();
            }
            if($model->phone_id)
            {
                $phone = Phone::findOne($model->phone_id);
                $phone->status = Phone::STATUS_ASSIGNED;
                $phone->save();
            }
            $model->save();
            
            return $this->redirect(['index','id' => $model->id]);
        }

        return $this->render('create',[
            'model' => $model,'usermodel' => $usermodel,'laptopmodel' => $laptopmodel,'phonemodel' => $phonemodel,'displaymodel' => $displaymodel,]);
    }

    /**
     * Updates an existing UserEquipmentMapping model.
     * If update is successful,the browser will be redirected to the 'view' page.
     * @param integer $id
     * @return mixed
     * @throws NotFoundHttpException if the model cannot be found
     */
    public function actionUpdate($id)
    {
        $model = $this->findModel($id);
        $usermodel = User::find()->all();
        $laptopmodel = Laptop::find()->all();
        $phonemodel = Phone::find()->all();
        $displaymodel = Display::find()->all();
        
        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect(['view','id' => $model->id]);
        }

        return $this->render('update',]);
    }

    /**
     * Deletes an existing UserEquipmentMapping model.
     * If deletion is successful,the browser will be redirected to the 'index' page.
     * @param integer $id
     * @return mixed
     * @throws NotFoundHttpException if the model cannot be found
     */
    public function actionDelete($id)
    {
        $this->findModel($id)->delete();

        return $this->redirect(['index']);
    }

    /**
     * Finds the UserEquipmentMapping model based on its primary key value.
     * If the model is not found,a 404 HTTP exception will be thrown.
     * @param integer $id
     * @return UserEquipmentMapping the loaded model
     * @throws NotFoundHttpException if the model cannot be found
     */
    protected function findModel($id)
    {
        if (($model = UserEquipmentMapping::findOne($id)) !== null) {
            return $model;
        }

        throw new NotFoundHttpException('The requested page does not exist.');
    }
}

型号：

<?php

namespace app\models;

use Yii;
use app\models\User;
use app\models\UserQuery;
use yii\db\ActiveQuery;
/**
 * This is the model class for table "user_equipment_mapping".
 *
 * @property int $id
 * @property int $user_id
 * @property int|null $laptop_id
 * @property int|null $phone_id
 * @property int|null $display_id
 * @property string|null $start_date
 * @property string|null $stop_date
 *
 * @property Display $display
 * @property Laptop $laptop
 * @property Phone $phone
 * @property User $user
 */
class UserEquipmentMapping extends \yii\db\ActiveRecord
{
    /**
     * {@inheritdoc}
     */
    public static function tableName()
    {
        return 'user_equipment_mapping';
    }

    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            [['user_id'],'required'],[['user_id','laptop_id','phone_id','display_id'],'integer'],[['start_date','stop_date'],'safe'],[['display_id'],'exist','skipOnError' => true,'targetClass' => Display::className(),'targetAttribute' => ['display_id' => 'id']],[['laptop_id'],'targetClass' => Laptop::className(),'targetAttribute' => ['laptop_id' => 'id']],[['phone_id'],'targetClass' => Phone::className(),'targetAttribute' => ['phone_id' => 'id']],[['user_id'],'targetClass' => User::className(),'targetAttribute' => ['user_id' => 'id']],];
    }

    /**
     * {@inheritdoc}
     */
    public function attributeLabels()
    {
        return [
            'id' => 'ID','user_id' => 'User ID','laptop_id' => 'Laptop ID','phone_id' => 'Phone ID','display_id' => 'Display ID','start_date' => 'Start Date','stop_date' => 'Stop Date',];
    }

    /**
     * Gets query for [[Display]].
     *
     * @return \yii\db\ActiveQuery|DisplayQuery
     */
    public function getDisplay()
    {
        return $this->hasOne(Display::className(),['id' => 'display_id']);
    }

    /**
     * Gets query for [[Laptop]].
     *
     * @return \yii\db\ActiveQuery|LaptopQuery
     */
    public function getLaptop()
    {
        return $this->hasOne(Laptop::className(),['id' => 'laptop_id']);
    }

    /**
     * Gets query for [[Phone]].
     *
     * @return \yii\db\ActiveQuery|PhoneQuery
     */
    public function getPhone()
    {
        return $this->hasOne(Phone::className(),['id' => 'phone_id']);
    }

    /**
     * Gets query for [[User]].
     *
     * @return \yii\db\ActiveQuery|UserQuery
     */
    public function getUser()
    {
        return $this->hasOne(User::className(),['id' => 'user_id']);
    }
    
    
    public function getUsers()
    {
        return $this->hasMany(User::className(),['user_id','id']);
    }

    public function getLaptops()
    {
        return $this->hasMany(Laptop::className(),['laptop_id','id']);
    }
    
    public function getDisplays()
    {
        return $this->hasMany(Display::className(),['dislpay_id','id']);
    }
    
    public function getPhones()
    {
        return $this->hasMany(Phone::className(),['phone_id','id']);
    }
    
    
    
    
    /**
     * {@inheritdoc}
     * @return UserEquipmentMappingQuery the active query used by this AR class.
     */
    public static function find()
    {
        return new UserEquipmentMappingQuery(get_called_class());
    }
}

索引：

<?php

use yii\helpers\Html;
use yii\grid\GridView;

/* @var $this yii\web\View */
/* @var $searchModel app\models\UserequipmentmappingSearch */
/* @var $dataProvider yii\data\ActiveDataProvider */

$this->title = 'User Equipment Mappings';
$this->params['breadcrumbs'][] = $this->title;
?>
<div class="user-equipment-mapping-index">

    <h1><?= Html::encode($this->title) ?></h1>

    <p>
        <?= Html::a('Create User Equipment Mapping',['create'],['class' => 'btn btn-success']) ?>
    </p>

    <?php // echo $this->render('_search',['model' => $searchModel]); ?>
    
    
    
    
    <?= GridView::widget([
        'dataProvider' => $dataProvider,'filterModel' => $searchModel,'formatter' => [
            'class' => 'yii\i18n\Formatter','nullDisplay' => '-','columns' => [
            #['class' => 'yii\grid\SerialColumn'],#'id',#'user.username',['attribute' => 'user','label' => 'Username','value' => 'user.username'
                #},#'laptop.laptop_model',['attribute' => 'laptop','label' => 'Laptop Series','value' => 'laptop.laptop_series'
                #},#'laptop_id',#'phone.phone_model',['attribute' => 'phone','label' => 'Phone Series','value' => 'phone.phone_series'
                #},#'phone_id',#'display.display_model',['attribute' => 'display','label' => 'Display Series','value' => 'display.display_series'
                #},#'display_id','start_date','stop_date',['class' => 'yii\grid\ActionColumn','header' => "Actions"],]); ?>


</div>

表格：

<?php

use yii\helpers\Html;
use yii\widgets\ActiveForm;
use yii\helpers\ArrayHelper;
use app\models\User;
use kartik\date\DatePicker;
use yii\web\View;
use yii\web\JqueryAsset;
use app\models\Laptop;
use app\models\Display;
use app\models\Phone;

$userData=ArrayHelper::map($usermodel,'id','username');
$laptopData=ArrayHelper::map($laptopmodel,'laptop_series');
$phoneData=ArrayHelper::map($phonemodel,'phone_series');
$displayData=ArrayHelper::map($displaymodel,'display_series');

$availablelaptopData = ArrayHelper::map(Laptop::find()->where(['status' => 'Available'])->all(),'laptop_series');
$availablephoneData = ArrayHelper::map(Phone::find()->where(['status' => 'Available'])->all(),'phone_series');
$availabledisplayData = ArrayHelper::map(Display::find()->where(['status' => 'Available'])->all(),'display_series');

?>
        
<div class="user-equipment-mapping-form">

    <?php $form = ActiveForm::begin(); ?>
        
    
        
    <?=$form->field($model,'user_id')->dropDownList($userData,['prompt'=>'Select...']);?>
    
    <?=$form->field($model,'laptop_id')->dropDownList($availablelaptopData,['prompt'=>'Select...']);?>    

    <?=$form->field($model,'phone_id')->dropDownList($availablephoneData,['prompt'=>'Select...']);?>

    <?=$form->field($model,'display_id')->dropDownList($availabledisplayData,['prompt'=>'Select...']);?>

    

    <?=$form->field($model,'start_date')->widget(DatePicker::classname(),[
        'language' => 'en','value' => date('yyyy/mm/dd',strtotime('+7 days')),'readonly' => true,#'disabled' => true,#'size' => 'lg',#'type' => DatePicker::TYPE_COMPONENT_APPEND,'options' => ['placeholder' => 'Selectati data'],'pluginOptions' => [
            #'orientation' => 'top right','format' => 'yyyy/mm/dd','todayHighlight' => true,'todayBtn' => true,'autoclose'=>true,]
    ]);?>

    <?=$form->field($model,'stop_date')->widget(DatePicker::classname(),]
    ]);?>





    
    
    <div class="form-group">
        <?= Html::submitButton('Save',['class' => 'btn btn-success']) ?>
    </div>

    <?php ActiveForm::end(); ?>

</div>

版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 dio@foxmail.com 举报，一经查实，本站将立刻删除。

相关推荐

导入项目后报错问题
依赖报错 idea导入项目后依赖报错，解决方案：https://blog.csdn.net/weixin_42420249/article/details/81191861 依赖版本报错：更换其他版本 无法下载依赖可参考：https://blog.csdn.net/weixin_42628809/a
idea不能识别yaml文件
使用mybatis plus常见错误
错误1：代码生成器依赖和mybatis依赖冲突 启动项目时报错如下 2021-12-03 13:33:33.927 ERROR 7228 [ main] o.s.b.d.LoggingFailureAnalysisReporter : *************************** APPL
gradle常见问题与错误
错误1：gradle项目控制台输出为乱码 # 解决方案：https://blog.csdn.net/weixin_43501566/article/details/112482302 # 在gradle-wrapper.properties 添加以下内容 org.gradle.jvmargs=-Df
Mybatis Plus传入参数0不起作用
错误还原：在查询的过程中，传入的workType为0时，该条件不起作用 &lt;select id=&quot;xxx&quot;&gt; SELECT di.id, di.name, di.work_type, di.updated... &lt;where&gt; &lt;if test=&qu
linux中make编译源码包失败
报错如下，gcc版本太低 ^ server.c:5346:31: 错误：‘struct redisServer’没有名为‘server_cpulist’的成员 redisSetCpuAffinity(server.server_cpulist); ^ server.c: 在函数‘hasActiveC
微服务启动错误：Command line is too long. Shorten command line for
解决方案1 1、改项目中.idea/workspace.xml配置文件，增加dynamic.classpath参数 2、搜索PropertiesComponent，添加如下 &lt;property name=&quot;dynamic.classpath&quot; value=&quot;tru
vue常见错误
删除根组件app.vue中的默认代码后报错：Module Error (from ./node_modules/eslint-loader/index.js): 解决方案：关闭ESlint代码检测，在项目根目录创建vue.config.js，在文件中添加 module.exports = { lin
spark常见错误
查看spark默认的python版本 [root@master day27]# pyspark /home/software/spark-2.3.4-bin-hadoop2.7/conf/spark-env.sh: line 2: /usr/local/hadoop/bin/hadoop: No s
matplotlib报错：AttributeError: module 'backend_interagg' has no attribute 'FigureCanvas'. Did you mean: 'FigureCanvasAgg'?
使用本地python环境可以成功执行 import pandas as pd import matplotlib.pyplot as plt # 设置字体 plt.rcParams[&#39;font.sans-serif&#39;] = [&#39;SimHei&#39;] # 能正确显示负号 p
gitlab登录失败，报错：This challenge page was accidentally cached by an intermediary and is no longer available.
设置时间 控制面板
后端开发常见错误
错误1：Request method ‘DELETE‘ not supported 错误还原：controller层有一个接口，访问该接口时报错：Request method ‘DELETE‘ not supported 错误原因：没有接收到前端传入的参数，修改为如下 参考 错误2：cannot r
docker常见错误
错误1：启动docker镜像时报错：Error response from daemon: driver failed programming external connectivity on endpoint quirky_allen 解决方法：重启docker -&gt; systemctl r
idea常见错误
错误1：private field ‘xxx‘ is never assigned 按Altʾnter快捷键，选择第2项 参考：https://blog.csdn.net/shi_hong_fei_hei/article/details/88814070 错误2：启动时报错，不能找到主启动类 #
pip安装依赖失败
报错如下，通过源不能下载，最后警告pip需升级版本 Requirement already satisfied: pip in c:\users\ychen\appdata\local\programs\python\python310\lib\site-packages (22.0.4) Coll
maven常见错误
错误1：maven打包报错 错误还原：使用maven打包项目时报错如下 [ERROR] Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources (default-resources)
cloud项目中常见错误
错误1：服务调用时报错 服务消费者模块assess通过openFeign调用服务提供者模块hires 如下为服务提供者模块hires的控制层接口 @RestController @RequestMapping(&quot;/hires&quot;) public class FeignControl
springboot常见错误
错误1：运行项目后报如下错误 解决方案 报错2：Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project sb 解决方案：在pom.
springmvc拦截器中使用redisTemplate报空指针异常
参考 错误原因 过滤器或拦截器在生效时，redisTemplate还没有注入 解决方案：在注入容器时就生效 @Component //项目运行时就注入Spring容器 public class RedisBean { @Resource private RedisTemplate&lt;String
vite报错：npm ERR! command C:WINDOWSsystem32cmd.exe /d /s /c C:UsersychenAppDataLocalTempnpx-dde1c848.cmd
使用vite构建项目报错 C:\Users\ychen\work&gt;npm init @vitejs/app @vitejs/create-app is deprecated, use npm init vite instead C:\Users\ychen\AppData\Local\npm-
pythonJavaScriptjavaHTMLPHPreactjsC#AndroidCSSNode.jssqlrpython-3.xMysqLjQueryc++pandasFlutterangularIOSdjangolinuxswifttypescript路由器JSON路由器设置无线路由器h3c华三华三路由器设置华三路由器电脑软件教程arraysdocker软件图文教程Cvue.jslaravelspring-boot