Oops! We encountered a TypeError at line 57 in the RegisterPage.html file. It seems that there is an issue with reading the property 'valid' of an undefined

An issue is arising while attempting to access a registration page... The error occurs when trying to navigate from the login page to the registration page Error:

RegisterPage.html:57 ERROR TypeError: Cannot read property 'valid' of undefined

Content in my register.component.html

    <form [formGroup]="registerForm" (submit)="register()">
      <ion-col>
        <ion-item class="boder-input">
          <ion-label position="floating">
            <ion-icon name="contact"></ion-icon> Name
          </ion-label>
          <ion-input type="text" formControlName="name"></ion-input>
        </ion-item>
      </ion-col>
      ...
    </form>

Content in my register.component.ts

import { Component, OnInit } from '@angular/core';
import { FormBuilder, FormGroup, Validators } from '@angular/forms';
import { AuthService } from '../services/auth.service';
import { Router } from '@angular/router';
import { resolve } from 'url';

@Component({
  selector: 'app-register',
  templateUrl: './register.page.html',
  styleUrls: ['./register.page.scss'],
})
export class RegisterPage implements OnInit {

  ...
}

Content in my register.module.ts

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import {  ReactiveFormsModule } from '@angular/forms';
import { Routes, RouterModule } from '@angular/router';

import { IonicModule } from '@ionic/angular';

import { RegisterPage } from './register.page';

const routes: Routes = [
  {
    path: '',
    component: RegisterPage
  }
];

@NgModule({
  imports: [
    CommonModule,
    IonicModule,
    ReactiveFormsModule,
    RouterModule.forChild(routes)
  ],
  declarations: [RegisterPage]
})
export class RegisterPageModule {}

I suspect that there may be an issue with reading form controls in the HTML. Any advice on how to resolve this issue would be greatly appreciated.

Answer №1

Replace form with registerForm

<ion-button type="submit" color="primary" [disabled]="!registerForm.valid" expand="block">Register</ion-button>

Answer №2

When working with your register.component.html file, make sure to update the form name group to registerForm from form within the [disabled] attribute of your button tag.


    <form [formGroup]="registerForm" (submit)="register()">
      <ion-col>
        <ion-item class="boder-input">
          <ion-label position="floating">
            <ion-icon name="contact"></ion-icon> Name
          </ion-label>
          <ion-input type="text" formControlName="name"></ion-input>
        </ion-item>
      </ion-col>
      <ion-col>
        <ion-item class="boder-input">
          <ion-label position="floating">
            <ion-icon name="mail"></ion-icon> Email
          </ion-label>
          <ion-input type="email" formControlName="email"></ion-input>
        </ion-item>
      </ion-col>
      <ion-col>
        <ion-item class="boder-input">
          <ion-label position="floating">
            <ion-icon name="logo-github"></ion-icon> Git
          </ion-label>
          <ion-input type="text" formControlName="git"></ion-input>
        </ion-item>
      </ion-col>
      <ion-col>
        <ion-item class="boder-input">
          <ion-label position="floating">
            <ion-icon name="key"></ion-icon> Password
          </ion-label>
          <ion-input type="password" formControlName="password"></ion-input>
        </ion-item>
      </ion-col>
      <ion-col>
        <ion-item class="boder-input">
          <ion-label position="floating">
            <ion-icon name="key"></ion-icon> Confirm Password
          </ion-label>
          <ion-input type="password" formControlName="pass"></ion-input>
        </ion-item>
      </ion-col>
      <ion-col>
        <ion-button type="submit" color="primary" [disabled]="!registerForm.valid" expand="block">Register</ion-button>
      </ion-col>
    </form>

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Binding an ID to an <ion-textarea> in Ionic 3

Can an ID be assigned to an ion-textarea? For example: <ion-textarea placeholder="Enter your thoughts" id="thoughtsBox"></ion-textarea> Thank you very much ...

Updating FormGroup Value in Angular When Value Changes

I am working on a project where I need to dynamically set a value for a formControl within a formGroup based on changes to another formControl in the same formGroup. However, when I attempted to implement this, I encountered an error stating: maximum call ...

The Typescript SyntaxError occurs when attempting to use an import statement outside of a module, typically within a separate file that contains

I am currently developing a Minecraft bot using the mineflayer library from GitHub. To make my code more organized and reusable, I decided to switch to TypeScript and ensure readability in my project structure (see image here: https://i.stack.imgur.com/znX ...

Creating multiple instances of a service in Angular 2 using various factories

Alright, here's the situation: I have a service that is nearly identical except for some initialization variables, making it an ideal case for using a factory. My struggle lies in utilizing multiple services within the same component or module, each ...

Unique HTML Element: the approval attribute

Encountering a challenge with a Custom HTML Element integration within Angular. When inserting the custom html element like this: <custom-element *ngIf="something == false" application-name="CUSTOM_NAME" another-attribute="SOME_LINK"> < ...

Ensure that the types of objects created by spreading are checked

When we spread two different types of objects to compose a new object in TypeScript, the type-checking is not automatically enforced. So how can we make sure that TypeScript performs the necessary checking? type TypeA = { id: number; } type TypeB = { ...

How to link an image from a location outside the src folder in an Angular project

I am currently working on an online store project, and I have a specific issue with my image files being stored outside the src folder. The path to the images is within the flowersApp folder under img Is there a way for me to access these images from this ...

Issue with form using "target=_blank" to open PDF in web application home screen not functioning properly

I am encountering an issue in my Angular application where a form with target="_blank" successfully returns a PDF upon submission, but when accessed from the homescreen icon of the web-app in Android/Chrome, the new window opens blank without displaying th ...

Angular 10: How to Retrieve NgForm from Projected Content

Imagine I have a component structured like this: <app-my-typical-form> <app-child-in-content></app-child-in-content> </app-my-typical-form> where the code for my-typical-form.component.html is as follows: <form #f="ngForm"&g ...

Is there a way to halt the current traversal of visitEachChild in TypeScript Transformer API?

While navigating through each child node of a parent node using visitEachChild, is there a way to stop the process when I no longer wish to visit the subsequent child nodes? For example: Parent node Node 1 Node 2 <-- My target point. Node 3 Node 4 Nod ...

Having trouble with Angular router.navigate not functioning properly with route guard while already being on a component?

I am currently troubleshooting an issue with the router.navigate(['']) code that is not redirecting the user to the login component as expected. Instead of navigating to the login component, I find myself stuck on the home component. Upon adding ...

Locate and embed within a sophisticated JSON structure

I have an object structured as follows: interface Employee { id: number; name: string; parentid: number; level: string; children?: Employee[]; } const Data: Employee[] = [ { id:1, name: 'name1', parentid:0, level: 'L1', children: [ ...

Issues encountered while attempting to update data in angular2-datatable

Once the datatable has been rendered, I am facing an issue where I cannot update the data. I'm utilizing angular2-datatable. In my appcomponent.html file: If I try to update 'data2' in my appcomponent.ts file as shown below: this.httpserv ...

Locating a specific entry in a custom object array based on a property

Currently working on an Angular 2 app using Typescript and encountering a challenge. There is a service that retrieves an array of questions structured like this: export class Question { constructor(public id: number, public quest ...

What is the best way to input variables specified in script setup for conducting unit tests?

In my component, I am utilizing a reactive state that is defined within the script setup section: const state = reactive({ hello: 'world' }) This state can be accessed in tests in this manner: wrapper.vm.state.hello = 'mad-world' ...

What is the best way to prevent users from entering a zero in the first position of a text box using JavaScript

Although I am aware this may be a duplicate issue, the existing solution does not seem to work for me. The field should accept values like: valid - 123,33.00, 100,897,99, 8000 10334 9800,564,88.36 invalid - 001, 0 ...

Discovering the name of an object property by locating its corresponding id

I am working with a basic JSON data structure where I need to retrieve the name from an object by comparing its ID. For example, if I have the number 2, I need to check if it matches any object's ID. If the ID is equal to 2, then I must fetch the corr ...

Exploring Query String Retrieval and Data Fetching in Ionic 2 using Angular 4's $

I am struggling to find the information I need, so I'm reaching out for help on how to send a request to a JSON api with parameters encoded in JavaScript. It is crucial that the parameters are properly encoded because the query could contain special ...

Challenges in integrating a PrimeNG Angular2 component with DynamicDialogRef, as well as the difficulties encountered when attempting to do

I am currently working on implementing a component that utilizes dynamic dialog and requires a direct usage. In the DynamicDialog example, there is a constructor in the car demo list component. constructor(private carService: CarService, public ref: Dynami ...

Using solely the directory to import index.ts

When attempting to import a module called index.ts from a directory by only specifying the directory name and not the module name itself, I encountered a TS2307 error stating "Cannot find module". Here is a snippet from ./src/main.ts: 'use strict&ap ...