如何在formArray中設置值

Question

我有一個formgroup命名輸入窗體，有一個formarray的主題。我想使用動態創建的過濾列表來更改輸入字段的值。

過濾功能工作正常：

filtertopic(idx: number) { 
    const test = this.topics.value[idx].topic; 
    if (test !== "") { 
    this.onderdeel = "topics"; 
    this.queryselector = idx; 
    this.filteredList = this.Topics.filter(function(el) { 
     return el.toLowerCase().indexOf(test.toLowerCase()) >-1; 
    }.bind(this)); 
    } else { this.filteredList = []; 
    } 
    } 

但功能handleBlur改變輸入字段中的值不起作用

handleBlur() { 
    console.log(this.selectedIdx); 
    if (this.selectedIdx > -1) { 
     if (this.onderdeel =="topics") { 
     this.topics.value[this.queryselector].topic.setValue(this.filteredList[this.selectedIdx]); 
     } else { 
     this.query = this.filteredList[this.selectedIdx]; 
     } 
    } 
    this.filteredList = []; 
    this.selectedIdx = -1; 
} 

我認爲它與

做

this.topics.value [this.queryselector] .topic.setValue（this.filteredList [this.selectedIdx]）;

設置formcontrol值。有人知道解決方案嗎？

Answer 1

this.yourdataobject.forEach(task => { 
     this.formcontrolname.push(
     this.fb.group({ 
      name: [task.name, Validators.required] 
     }) 
    ); 
    });