Why is my angular reactive form producing the following error: updateTreeValidity is not a function

  Kiến thức lập trình

When the form is initially accessed I get the following error:

ERROR TypeError: this.form._updateTreeValidity is not a function
_updateDomValue
ngOnChanges

For each character I enter into a field, I get this error:

ERROR TypeError: this.form.get is not a function
_setUpFormContainer
addFormGroup
ngOnInit

My form:

<form [formGroup]="checkoutForm" (ngSubmit)="placeOrder()">
    <section>
        <div class="row">
            <div class="col col-12 col-lg-8">
                <div formGroupName="deliveryAddress">
                    <div class="row mb-4">
                        <div class="col">
                            <label class="form-label">First Name</label>
                            <input id="firstName" class="form-control fw-bold" type="text" 
                                required formControlName="firstName"
                                (change)="saveToDataStore()">
                        </div>
                
                        <div class="col">
                            <label class="form-label">Last Name</label>
                            <input id="lastName" class="form-control fw-bold" type="text" 
                                required formControlName="lastName"
                                (change)="saveToDataStore()">
                        </div>
                
                
                        <div class="row mb-4">
                            <div class="col">
                                <label class="form-label">Phone Number</label>
                                <input id="phone" class="form-control fw-bold" type="phone" 
                                    required formControlName="phone"
                                    (change)="saveToDataStore()">
                            </div>
                        </div>
                        <div class="row mb-4">
                            <div class="col">
                                <label class="form-label">Delivery Address</label>
                                <input id="address1" class="form-control fw-bold" type="text" 
                                    required formControlName="address1"
                                    (change)="saveToDataStore()">
                            </div>
                        </div>
                        <div class="row mb-4">
                            <div class="col">
                                <label class="form-label">Delivery Address Line 2 (Optional)</label>
                                <input id="address2" class="form-control fw-bold" type="text" formControlName="address2"                                 
                                    (change)="saveToDataStore()">
                            </div>
                        </div>
                        <div class="row mb-4">
                            <div class="col">
                                <div class="form-check">
                                    <input id="useAsBillingAddress" class="form-check-input" type="checkbox"
                                        formControlName="useAsBillingAddress" (change)="saveToDataStore()">
                                    <label class="form-check-label" for="formCheck-1">Use as Billing
                                        Address</label>
                                </div>
                            </div>
                        </div>
                
                
                    </div>
                </div>
            
                <div formGroupName="applianceDelivery">
                    <div class="row">
                        <div class="col d-flex flex-column col-12 col-md-4">
                            <img src="assets/img/deliverytruck.png"
                                style="width: 64px;">
                            <div>
                                <small class="me-2">{{cart?.length}}</small>
                                <small>Item(s)</small>
                            </div>
                        </div>
                        <div class="col" style="font-size: 14px;">
                            <h6>Select Delivery Date</h6>
                            <input id="deliveryDate" class="form-control fw-bold mb-2" type="date" 
                                required formControlName="deliveryDate"
                                (change)="saveToDataStore()">
                
                            <small class="fw-normal" style="font-size: 14.3px;">We'll call or text (617)
                                567-7112 with your projected 4-hour delivery window one business day
                                before your scheduled delivery date. You may also receive an optional
                                customer service satisfaction survey.</small>
                            <p class="mt-4">Delivery Instructions:</p>
                            <textarea id="specialInstructions" class="form-control" 
                                formControlName="specialInstructions"
                                (change)="saveToDataStore()"></textarea>
                        </div>
                    </div>
                </div>
            
                <div formGroupName="paymentMethod">
                    <div class="row">
                        <div class="row mb-4">
                            <div class="col">
                                <div class="form-check">
                                    <input class="form-check-input" type="radio" id="paymentType1" value="PayPal"
                                        formControlName="paymentType" (change)="saveToDataStore()">
                                    <label class="form-check-label" for="paymentType1" style="font-style: italic;">PayPal</label>
                                </div>
                                <div cl ass="form-check">
                                    <input class="form-check-input" type="radio" id="paymentType2"
                                        value="Credit Card" formControlName="paymentType" (change)="saveToDataStore()">
                                    <label class="form-check-label" for="paymentType2">Credit Card</label>
                                </div>
                            </div>
                        </div>
                        <div class="row mb-4">
                            <div class="col">
                                <div class="input-group">
                                    <span class="input-group-text ps-0">
                                        <i class="fa fa-credit-card-alt" style="font-size: 25px;"></i>
                                    </span>
                                    <input id="cardNumber" class="form-control fw-bold" type="text" 
                                        required formControlName="cardNumber"
                                        (change)="saveToDataStore()" placeholder="Enter credit card number">
                                    <button class="btn btn-primary d-none" type="button">Button</button>
                                </div>
                            </div>
                        </div>
                        <div class="row mb-4">
                            <div class="col col-12 col-lg-4">
                                <small>Expiration Month</small>
                                <select id="expMonth" class="form-select fw-bold" formControlName="expMonth" (change)="saveToDataStore()">
                                    <optgroup label="Month">
                                        <option *ngFor="let expMonth of expirationMonths"> {{expMonth}}
                                        </option>
                                    </optgroup>
                                </select>
                            </div>
                            <div class="col col-12 col-lg-4">
                                <small>Expiration Year</small>
                                <select id="expYear" class="form-select fw-bold" formControlName="expYear" (change)="saveToDataStore()">
                                    <optgroup label="Year">
                                        <option *ngFor="let expYear of expirationYears">
                                            {{expYear}}
                                        </option>
                                    </optgroup>
                                </select>
                            </div>
                            <div class="col col-12 col-lg-4">
                                <small>CVV (on back)</small>
                                <div class="input-group">
                                    <span class="input-group-text ps-0">
                                        <i class="fa fa-credit-card-alt" style="font-size: 25px;"></i>
                                    </span>
                                    <input id="CVV" class="form-control fw-bold" type="text" maxlength="3" formControlName="CVV"
                                        (change)="saveToDataStore()" placeholder="Enter CVV">
                
                                    <button class="btn btn-primary d-none" type="button">Button</button>
                                </div>
                            </div>
                            <div class="col col-12 mt-4">
                                <div class="form-check">                                 
                                    <input class="form-check-input" type="checkbox" id="saveAsDefaultCard" 
                                        formControlName="saveAsDefaultCard"
                                        (change)="saveToDataStore()">
                                    <label class="form-check-label" for="saveAsDefaultCard" style="font-size: 13px;">Save as my default credit
                                        card</label>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <div class="col col-12 col-md-4">
                <app-order-summary></app-order-summary>

                <section class="mt-5">
                    <button class="btn btn-primary w-100 primary-button" type="submit"
                        (click)="placeOrder()"
                        style="font-size: 20px;font-weight: bold;">Place Order</button>
                </section>
            </div>
        </div>
    </section>
</form>

The component:

import { Component } from '@angular/core';
import { FormControl, FormGroup, ReactiveFormsModule } from '@angular/forms';
import { Store } from '@ngrx/store';
import { ToastrService } from 'ngx-toastr';
import { OrderSummaryComponent } from '../order/order-summary/order-summary.component';
import { CommonModule } from '@angular/common';
import { storeCheckoutData } from '../checkout/checkout.actions';
import { CheckoutService } from '../checkout/checkout.service';

@Component({
  selector: 'app-checkout2',
  standalone: true,
  imports: [
    ReactiveFormsModule,
    CommonModule,
    OrderSummaryComponent
  ],
  templateUrl: './checkout2.component.html',
  styleUrl: './checkout2.component.scss'
})
export class Checkout2Component {
  checkoutForm: FormGroup = new FormGroup({});
  public cart;
  public checkoutData;
  public expirationMonths;
  public expirationYears;

  constructor(
    private store:Store<{cartReducers, checkoutReducers}>,
    private checkoutService:CheckoutService,
    private toastr: ToastrService,
  ){}

  ngOnInit() {
    this.initCheckoutForm();
    this.subscribeToRedux();        

  }

  private subscribeToRedux = () => {

    const cartReducers$ = this.store.select((state) => {
      return state.cartReducers;
    });

    cartReducers$.subscribe((cartReducers:any) => {
      this.cart = cartReducers.cart;
     console.log('CheckoutComponent.cart', this.cart)
    });

    const checkoutReducers$ = this.store.select((state) => {
      return state.checkoutReducers;
    });

    checkoutReducers$.subscribe((checkoutReducers:any) => {

      if(Object.keys(checkoutReducers?.checkoutData).length > 0) {
        this.checkoutData = JSON.parse(JSON.stringify(checkoutReducers.checkoutData));

  
        this.checkoutForm = {...this.checkoutData}

        // console.log('this.checkoutData 2', this.checkoutData);
      console.log('ChecoutComponent.checkoutForm 2', this.checkoutForm);
      }
  
  
      this.expirationMonths = checkoutReducers.expirationMonths;
      this.expirationYears = checkoutReducers.expirationYears;
      console.log('CheckoutComponent.checkoutData', this.checkoutData)
      console.log('CheckoutComponent.expirationMonths', this.expirationMonths)
      console.log('CheckoutComponent.expirationYears', this.expirationYears)
    });
  }

  private initCheckoutForm = () => {
    this.checkoutForm = new FormGroup({
      deliveryAddress: new FormGroup({ 
        firstName: new FormControl(''),
        lastName: new FormControl(''),
        phone: new FormControl(''),
        address1: new FormControl(''),
        address2: new FormControl(''),
        useAsBillingAddress: new FormControl(''),
      }),
      applianceDelivery: new FormGroup({ 
          deliveryDate: new FormControl(''),
          specialInstructions: new FormControl(''),
      }),
      paymentMethod: new FormGroup({ 
          paymentType: new FormControl(''),
          cardNumber: new FormControl(''),
          expMonth: new FormControl(''),
          expYear: new FormControl(''),
          CVV: new FormControl(''),
          defaultCreditCard: new FormControl(''),
    })
    });

    console.log('this.checkoutForm', this.checkoutForm.value);
  }

  public saveToDataStore = () => {
     this.store.dispatch(storeCheckoutData({checkoutData: this.checkoutData}))
  }

  public placeOrder = () => {    
    const hdepot = localStorage.getItem('hdepot');
    let token = null;

    if(hdepot) {
      token = JSON.parse(hdepot).user.token;
    }

    console.log('token', token)

    if(!token) {
      this.toastr.warning('Please sign in to place an order.', '');
      return;
    }    

    const items = [];

    for(let item of this.cart) {
      items.push (
         {
          product: item.product._id,
          quantity: item.quantity,
          color: item.color,
          size: item.size
        }
      )
    }

    this.checkoutData = {...this.checkoutForm}
    this.checkoutData.items = items;
    console.log('CheckoutComponent.checkoutData 2', this.checkoutData)
    this.checkoutService.placeOrder(this.checkoutData)
  }
}

1

You must have strict mode turned off, given all the untyped variables. You’re issue is that you reassign checkoutForm to a value that is another type other than FormGroup. That is why the errors are complaining about missing functions.

This issue I spotted occurs in the following snippet:

checkoutReducers$.subscribe((checkoutReducers:any) => {
  if(Object.keys(checkoutReducers?.checkoutData).length > 0) {
    this.checkoutData = JSON.parse(JSON.stringify(checkoutReducers.checkoutData));
    // 👇 checkoutData IS NOT a ForGroup! 👇 
    this.checkoutForm = {...this.checkoutData}
    // console.log('this.checkoutData 2', this.checkoutData);
    console.log('ChecoutComponent.checkoutForm 2', this.checkoutForm);
  }
  /* ... */
}

You probably meant to do something like this.checkoutForm.setValue(this.checkoutData);

Your code is probably not in a state where you can quickly turn on more robust type checking. At the very least consider the following:

  • Make checkoutForm readonly so that it isn’t accidently reassigned again.
  • Set the value of checkoutForm when it is initialized. There’s nothing gained by waiting for the OnInit lifecycle event and you never intentionally reassign the value anywhere else.

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