Issues with Ionic 3 Directive Not Functioning

Question

Issues with Ionic 3 Directive Not Functioning

Struggling to create a custom directive in Ionic that won't resize automatically? I can't figure out what's going wrong.

Here's the code snippet from my project, which is an Ionic 3 app with Angular 4:

import { Directive, HostListener, ElementRef } from '@angular/core';

@Directive({
  selector: '[auto-resize-text-input]' // Attribute selector
})
export class AutoResizeTextInput {
  constructor(public elem: ElementRef) {
    console.log('Hello AutoResizeTextInput Directive');
  }

  @HostListener('input', ['$event.target']) onInput() {
    this.resizeTextOnInput();
  }

  private resizeTextOnInput() {
    this.elem.nativeElement.style.overflow = 'hidden';
    this.elem.nativeElement.style.height = 'auto';
    this.elem.nativeElement.style.height = this.elem.nativeElement.scrollHeight + "px";
  }
}

In need of assistance. Can someone please help me figure this out?

angular typescript ionic2

Answer 1

Answer №1

Encountering a similar issue, I found that the directive was not being acknowledged by the application without generating any error messages. To resolve this, I relocated the directive from the main module's declarations to the page module's declarations, where the directive is actually utilized. This adjustment successfully eliminated the problem for me.

Answer 2

Encountering a similar issue, I found that the directive was not being acknowledged by the application without generating any error messages. To resolve this, I relocated the directive from the main module's declarations to the page module's declarations, where the directive is actually utilized. This adjustment successfully eliminated the problem for me.

Answer 3

Answer №2

If you found yourself in a situation like mine where you needed to implement this Directive across various components, here’s how I tackled it.

To start, create a shared DirectiveModule named directives.module.ts within the same directory as your app.module.ts file. Make sure to include the Directive you wish to use under both declarations:[] and exports:[]:

import { NgModule } from '@angular/core';
import { SomeDirective } from './some.directive';

@NgModule({
  declarations: [SomeDirective],
  exports: [SomeDirective]
})
export class DirectivesModule {}

Next, import the shared directive module into any modules where you require its functionality:

import { NgModule } from '@angular/core';
import { IonicPageModule } from 'ionic-angular';
import { SomePage } from './some';
import { DirectivesModule } from '../../app/directives.module';

@NgModule({
  declarations: [
    DashboardPage
  ],
  imports: [
    IonicPageModule.forChild(SomePage),
    DirectivesModule
  ]
})
export class SomePageModule {}

I searched everywhere but couldn’t find the solution I needed – hopefully, this guide proves helpful to someone else in need.

Answer 4

If you found yourself in a situation like mine where you needed to implement this Directive across various components, here’s how I tackled it.

To start, create a shared DirectiveModule named directives.module.ts within the same directory as your app.module.ts file. Make sure to include the Directive you wish to use under both declarations:[] and exports:[]:

import { NgModule } from '@angular/core';
import { SomeDirective } from './some.directive';

@NgModule({
  declarations: [SomeDirective],
  exports: [SomeDirective]
})
export class DirectivesModule {}

Next, import the shared directive module into any modules where you require its functionality:

import { NgModule } from '@angular/core';
import { IonicPageModule } from 'ionic-angular';
import { SomePage } from './some';
import { DirectivesModule } from '../../app/directives.module';

@NgModule({
  declarations: [
    DashboardPage
  ],
  imports: [
    IonicPageModule.forChild(SomePage),
    DirectivesModule
  ]
})
export class SomePageModule {}

I searched everywhere but couldn’t find the solution I needed – hopefully, this guide proves helpful to someone else in need.

Answer 5

Answer №3

When relocating your directive file to the components folder, follow these steps:

1. Simply move your file from components/your-directive to directives/your-directive 2. After moving the file, remember to rebuild it. Best of luck!

Answer 6

When relocating your directive file to the components folder, follow these steps:

1. Simply move your file from components/your-directive to directives/your-directive 2. After moving the file, remember to rebuild it. Best of luck!

Answer 7

Answer №4

Perhaps this advice could be beneficial:

Incorporate directives.module.ts into both the app.module.ts and components.module.ts if you are implementing directives within a component. Alternatively, you can simply import it directly into the app.module.ts to utilize your directive on a page.

Answer 8

Perhaps this advice could be beneficial:

Incorporate directives.module.ts into both the app.module.ts and components.module.ts if you are implementing directives within a component. Alternatively, you can simply import it directly into the app.module.ts to utilize your directive on a page.

Issues with Ionic 3 Directive Not Functioning

Answer №1

Answer №2

Answer №3

Answer №4

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