/Javascript/Ionic/Ionic ngfor in component

Ionic ngfor in component

I'm going crazy, i've created a new component and he's working fine. Now i would like to use this on two pages.

Then i've created a component module (/components/all-components.module.ts) like this :

import { NgModule } from '@angular/core';
import { TagsComponent } from './tags/tags.component';
import { IonicModule } from '@ionic/angular';


@NgModule({
  imports: [IonicModule],
  declarations: [
    TagsComponent
  ],
  exports: [
    TagsComponent
  ]
})

export class AllComponentsModule {}

I've added on app.module.ts the AllComponentsModule and on my 2 pages module i have added same.

Now, my component work fine when i'm displaying text or variable, my console.log return the data, but if i use *ngFor nothing appear.

Finally, here's my component

import { Component, OnInit, Input } from '@angular/core';

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

  @Input() userTags: any;

  constructor() {
  }

  ngOnInit() {
      console.log(this.userTags);
  }
}

And the view:

<p>hi</p>
<div *ngFor="let tag of userTags">
  <p>{{tag?.name}}</p>
</div>

Ok i don't understand why but if i use a module to store all of components. On my all-components.module.ts i have to put the CommonModule to interpret *ngFor, *ngIf, etc.

With CommonModule import all working fine !

Here's the code updated:

import { NgModule } from '@angular/core';
import { TagsComponent } from './tags/tags.component';
import { CommonModule } from "@angular/common";

@NgModule({
  imports: [CommonModule],
  declarations: [
    TagsComponent
  ],
  exports: [
    TagsComponent
  ]
})

export class AllComponentsModule {}

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