ngx-bootstrap How to open a modal from another component?

Question

What I'm trying to do is open a modal from another component, however I keep getting this error TypeError: Cannot create property 'validator' on string 'test1' when component1.html loads because childModal is included. How can I get rid of these errors and implement this properly?

component1.html

<button type="button" class="btn btn-outline-primary btn-lg" (click)="modal.showModal()">Test
......
<child-modal #childModal ></child-modal>

component1.ts

 @ViewChild('childModal') childModal: ModalComponent;

modal.html

<div bsModal #childModal="bs-modal" class="modal fade" tabindex="-1" role="dialog>
    <div class="modal-dialog modal-lg">
      <div class="modal-content">
          <input type="text" formControl="test1">
          <input type="text" formControl="test2">
          </div>
     </div>
</div>   

modal.component.ts

constructor(private modalService: BsModalService) {
    this.form = new FormGroup({
      'test':                     new FormControl(),
      'test2':                    new FormControl()
      }) 
 }

Answer 1

If you're trying to open a Modal Component from another Component, then this is the right way to do it with ngx-bootstrap:

import { Component } from '@angular/core';
import { BsModalService } from 'ngx-bootstrap/modal';
import { BsModalRef } from 'ngx-bootstrap/modal/modal-options.class';

/* This is the Component from which we open the Modal Component */
@Component({
  selector: 'my-component',
  templateUrl: './service-component.html'
})
export class MyComponent {
  bsModalRef: BsModalRef;
  constructor(private modalService: BsModalService) {}

  public openModalWithComponent() {
    /* this is how we open a Modal Component from another component */
    this.bsModalRef = this.modalService.show(ModalContentComponent);
  }
}

/* This is the Modal Component */
@Component({
  selector: 'child-modal',
  template: `
    <div class="modal-header">
      <h4 class="modal-title pull-left">Title</h4>
      <button type="button" class="close pull-right" aria-label="Close" (click)="bsModalRef.hide()">
        <span aria-hidden="true">&times;</span>
      </button>
    </div>
    <div class="modal-body">
      ...
    </div>
    <div class="modal-footer">
      <button type="button" class="btn btn-default" (click)="bsModalRef.hide()">Close</button>
    </div>
  `
})
export class ChildModalComponent {
  constructor(public bsModalRef: BsModalRef) {}
}

template of the Component which is calling the Modal:

<button type="button" class="btn btn-primary" (click)="openModalWithComponent()">Create modal with component</button>

So you should NOT include the Modal Component in the template like this:

 <child-modal #childModal ></child-modal>

Official doc:

https://valor-software.com/ngx-bootstrap/#/modals#service-component