As I delve into the creation of my initial Angular application, I find myself faced with a series of errors appearing in the development mode console:
ERROR Error: "Cannot find control with unspecified name attribute"
ERROR Error: "Cannot find control with path: 'items -> name'"
ERROR Error: "Cannot find control with path: 'items -> height'"
Despite having consulted various Stack Overflow threads (such as this, this, this, and this), I remain unable to identify where I am going wrong. My lack of experience with Angular only adds to the challenge.
The TypeScript code for my component is detailed below:
import {Component, OnInit} from '@angular/core';
import {FormArray, FormBuilder, FormControl, FormGroup, Validators} from '@angular/forms';
@Component({
selector: 'app-pack-input',
templateUrl: './pack-input.component.html',
styleUrls: ['./pack-input.component.css']
})
export class PackInputComponent implements OnInit {
public boxForm: FormGroup;
constructor(private formBuilder: FormBuilder) { }
ngOnInit() {
this.boxForm = this.formBuilder.group({
items: this.formBuilder.array([this.createBox()])
});
}
createBox(): FormGroup {
return this.formBuilder.group({
name: ['', [Validators.required, Validators.minLength(3)]],
height: ['', [Validators.required, Validators.minLength(3)]],
width: ['', [Validators.required, Validators.minLength(3)]],
length: ['', [Validators.required, Validators.minLength(3)]],
weight: ['', [Validators.required, Validators.minLength(3)]]
});
}
get items(): FormArray {
return this.boxForm.get('items') as FormArray;
}
addItem(): void {
this.items.push(this.createBox());
}
public onSubmit(formValue: any) {
console.log(formValue);
}
}
Additionally, here is the HTML component code:
<div>
<div class="row">
<h3>Set the box size in meters</h3>
</div>
<form [formGroup]="boxForm" (ngSubmit)="onSubmit(boxForm.value)" >
<div class="row" formArrayName="items" *ngFor="let item of items.controls; let i = index;" [formGroupName]="i" style="margin-bottom: 10px">
<div class="form-group">
<div class="col-sm-5 form-group">
<label for="name">Name</label>
<input class="form-control" type="text" formControlName="name" placeholder="Name" />
</div>
<div class="col-sm-3 form-group">
<label for="name">Height</label>
<input class="form-control" type="text" formControlName="height" placeholder="Height" />
</div>
<div class="col-sm-3 form-group">
<label for="name">Width</label>
<input class="form-control" type="text" formControlName="width" placeholder="Width" />
</div>
<div class="col-sm-3 form-group">
<label for="name">Length</label>
<input class="form-control" type="text" formControlName="length" placeholder="Length"/>
</div>
<div class="col-sm-3 form-group">
<label for="name">Weight</label>
<input class="form-control" type="text" formControlName="weight" placeholder="Weight" />
</div>
<hr>
</div>
</div>
<button class="btn btn-success" type="submit" style="margin-right: 10px">Pack</button>
<button class="btn btn-primary" type="button" (click)="addItem()">New Box</button>
</form>
</div>
Upon thorough inspection, there does not appear to be any typographical errors within the formControlName="name" and
formControlName="height"I'm at a loss for what may be causing these issues. Any guidance would be greatly appreciated.