如何在 Angular 8 中使用基于 API 的数据生成动态选项卡

How to generate dynamic tab with data based on API in Angular8

我有以下 JSON 回复。

根据 JSON 的响应,我正在创建动态选项卡,并且在每个选项卡中我想根据下面提到的条件推送 formArray。

**在下面的回复中,

const myObj = [
          {
            'TabName': 'Test1',
            'otherDetails': [
              {
                'processTechType': 'Continuous'
              },
              {
                'processTechType': 'Batch',
              },
            ]
          },
          {
            'TabName': 'Test2',
            'otherDetails': [
              {
                'processTechType': 'Batch'
              }
            ]
          }
        ];

对于 Ex - TabName Test1 和 TabName Test2 是我动态显示的选项卡名称。现在在 Test1 选项卡中,我想推送 formArray Continuous 和 formArray Batch 这两种形式。因为在 Test1 选项卡中,我有连续和批处理的 processTechType 数组。所以它将在 Test1 选项卡中显示这两种形式。

Ex - 2 -- 现在在 Test2 选项卡中,我只想推送 formArray 批处理表单。因为在 Test2 选项卡中,我在 otherDetails 对象中有 processTechType 批处理。所以它只会在Test2 Tab中显示Batch形式。

我的意思是,每次它都会检查响应中的 Tabname 和 otherDetails 键,并仅在特定选项卡上显示基于 processTechType 数组键的表单。

我有以下代码。但它在所有选项卡中推送两种形式,而不是在特定选项卡上。例如 - 从我的代码中,它在 Test1 和 Test2 选项卡中显示一次 Continuous formArray 和 Batch formArray 两次。

预期输出 -

在Test1选项卡中,它会推送一个Continuous和一个Batch表单。

在Test2 Tab中,只会显示push batch form

任何人都可以帮助我让我的代码工作以获得预期的输出。

getMakeLineData() {
    
    var otherDetails = myObj.filter(m => m.otherDetails).map(m => m.otherDetails);
    this.makeLineData = myObj;
    if (otherDetails) {
      otherDetails.forEach(element => {       
        for (var i of element) {
          if (i.processTechType === 'Continuous') {
            this.addQuantity();
          }
          else if (i.processTechType === 'Batch')  {
            this.addBatch();
          } 
        }
      });      
    } 
}

createContinuousForm() {
    return this.fb.group({
      designProcess: ['', [Validators.required]]
    });
  }
  createBatchForm() {
    return this.fb.group({
      avgBCT: ['', [Validators.required]]
    });
  } 
  continuousType(): FormArray {
    return this.dataCollectionForm.get("continuousType") as FormArray;
  }

  batchType(): FormArray {
    return this.dataCollectionForm.get("batchType") as FormArray;
  }

  addQuantity() {
    this.continuousType().push(this.createContinuousForm());

  }
  addBatch() {
    this.batchType().push(this.createBatchForm());
  }

HTML模板

<div class="tabGroupDiv row">
    <div class="lossLinesDiv">     
      <mat-tab-group class="lossMatGrpCls" mat-align-tabs="left">
        <mat-tab *ngFor="let lineData of makeLineData">
          <ng-template mat-tab-label>
                <button class="validatorTabBgClr">{{lineData.makeLineName}}</button>
          </ng-template>
          <form [formGroup]="dataCollectionForm" (ngSubmit)="onSubmit()">
            <!-- <--continuous Form start here -->  
            <div class="admin-console-main-wrapper" formArrayName="continuousType">
              <div class="content-wrapper" *ngFor="let lineItem of continuousType().controls; let i=index"
                [formGroupName]="i">
              
                <div class="row list-wrapper">
                  <div class="col-xs-3 col-md-3 deo-dv-list-wrapper">
                    <h5 class="topbar-items-text">Design Process Capacity (Tonnes)</h5>
                    <mat-form-field appearance="outline">
                      <input matInput type="text" class="line-fte-input smed-input" placeholder="Design Process Capacity"
                        formControlName="designProcess">
                    </mat-form-field>
                    <mat-error *ngIf="lineItem?.controls?.designProcess?.hasError('required')">
                      Field is required
                    </mat-error>
                  </div>
                </div>              
              </div>
            </div>  
            <!-- <--continuous Form start here -->
  
            <!-- <--Batch Form start here -->
            <div class="admin-console-main-wrapper" formArrayName="batchType">
              <div class="content-wrapper" *ngFor="let lineBatchItem of batchType().controls; let i=index"
                [formGroupName]="i">               
  
                <div class="row list-wrapper">
                  <div class="col-xs-3 col-md-3 deo-dv-list-wrapper">
                    <h5 class="topbar-items-text">Average BCT (mins)</h5>
                    <mat-form-field appearance="outline">
                      <input matInput type="text" class="line-fte-input smed-input" placeholder="Average BCT"
                        formControlName="avgBCT">
                    </mat-form-field>
                  </div>                 
                </div>
              </div>
            </div>  
            <!-- <--Batch Form ends here -->
          </form>
        </mat-tab>
      </mat-tab-group>
    </div>
  </div>

您的对象对于关系选项卡和 FormArrays 来说很复杂,因此,假设您有一个更舒适的对象。有的喜欢

[{tabName:'Tab 1',continuousType:0,batchType:0},
 {tabName:'Tab 2',continuousType:1,batchType:-1}]

看到你用“-1”表示标签没有这种类型的形式

为此创建一个函数 thah return 这个更舒适的数组

  tabsConfig(obj:any){
    const tab=[];
    let continuousType=0;
    let batchType=0;
    obj.forEach((x,index)=>{
      tab[index]={tabName:x.TabName,continuousType:-1,batchType:-1}
      x.otherDetails.forEach(y=>{
        if (y.processTechType=='Continuous')
            tab[index].continuousType=continuousType++
            if (y.processTechType=='Batch')
            tab[index].batchType=batchType++
      })
    })
    return tab
  }

现在您可以使用变量来存储配置

this.tabs=this.tabConfig(this.myObj)

然后你就可以

this.tabs.forEach(x=>{
   if (x.continuousType!=-1)
     this.continuousType.push(this.createContinuousForm())
   if (x.batchType!=-1)
     this.batchType.push(this.createBatchForm())
})

并且,如果您有两个辅助表单,return FormArrays

的 formGroup
getContinuousForm(index:number){
   return (this.dataCollectionForm.get("continuousType") as FormArray)
          .at(index) as FormGroup
}

getBatchForm(index:number){
   return (this.dataCollectionForm.get("batchType") as FormArray)
          .at(index) as FormGroup
}

您已准备好创建迭代“制表符”数组的 mat-tab

<mat-tab-group >
   <mat-tab *ngFor="let tab of tabs;let i=index">
          <ng-template mat-tab-label>
                <button >{{tab.tabName}}</button>
          </ng-template>
          <form *ngIf="tab.continuousType!=-1
             [formGroup]="getContinuousForm(tab.continuousType)">
             ....
          </form>
          <form *ngIf="tab.batchType!=-1
             [formGroup]="getBatchForm(tab.batchType)">
             ....
          </form>
    </mat-tab>
</mat-tab-group>