Toggle the visibility of a modal in code across various components in an Angular 4 project using Typescript

As I was working on my university App, I encountered an issue while attempting to open a Bootstrap modal in code from a different component. Opening a component in code from the same component posed no problems for me as I use JQuery and it functions perfectly:

hideLoginModal(){
$('#myModal').modal('hide');
}

The scenario is that the modal should pop up and hide when clicking on a Navigation Bar button in NavigationComponent. The challenge lies in moving the "LoginModal" and all related login functions to the AccountComponent instead of having them stuck in NavigationComponent.

In my attempt to resolve this issue, I tried relocating the "LoginModal" HTML along with the hideLoginModal() function and other login functions to AccountComponent/AccountService. This way, in NavigationComponent, I could simply call accountService.openModal() or accountService.hideModal() upon clicking the "Login" button.

However, the problem arose when $('#myModal') in AccountComponent returned null when accessed in this manner. It led me to speculate that this issue is due to the fact that the HTMLs of AccountComponent are not initialized if you click on the "Login" button in NavigationComponent without entering or routing to the page beforehand (as accessing the AccountComponent view requires logging in first).

My understanding may be flawed, especially since I am new to learning TypeScript and Angular. Any insights or workarounds would be greatly appreciated. Can anyone provide assistance?

angulartypescriptmodal-dialogbootstrap-modal

Answer №1

To solve this issue, utilize ngBootstrap for your modal functionality. Below is an example of how I resolved a similar situation using my Modal component.

<div id="myModal" class="modal" role="dialog" [ngbCollapse]="showModal">
""
""
""
</div>

Within your TypeScript file, make sure to declare the following variable:

showModal = true;

If you wish to toggle the modal when a button is clicked, you can do so like this:

<button type="button" class="btn btn-success" data-dismiss="modal" (click)="toggleModal()">YES</button>

Create a function in your TypeScript file to handle the toggling of the modal:

toggleModal()
{
    this.showModal = !this.showModal;
}

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