CODEWITHSUNDEEP
javascriptangulartypescriptangular-tree-component
Prateek Choudhury
Prateek Choudhury

Reputation: 302

Angular Tree component not working

I installed and imported angular tree component and tried setting it up using the basic example provided following the steps in https://angular2-tree.readme.io/

But unfortunately I only see the root node and without expand. Posting the code can someone just see off the bat if anything is wrong? Please help me understand the error I oviously am not able to see.

Module:

import { NgModule } from '@angular/core';
import { TreeModule } from 'angular-tree-component';

@NgModule({
  imports: [
    TreeModule
  ],
  declarations: [],
  providers: []
})
export class CourseCreationModule { }

Component:

import { Component, OnInit } from '@angular/core';
import { Router, ActivatedRoute, Params } from '@angular/router';

@Component({
  selector: 'app-container',
  templateUrl: './container.component.html',
  styleUrls: ['./container.component.css']
})
export class ContainerComponent implements OnInit {
  tree: any;

  constructor() { }

  getCourseDetails() {
      this.createLessonTree();
  }

  createLessonTree() {
    this.tree = [
      {
        id: 1,
        name: 'root1',
        children: [
          { 
            id: 2, 
            name: 'child1'
          },
          { id: 3, 
            name: 'child2'
          }
        ]
      },
      {
        id: 4,
        name: 'root2',
        children: [
          { id: 5, name: 'child2.1' },
          {
            id: 6,
            name: 'child2.2',
            children: [
              { id: 7, name: 'subsub' }
            ]
          }
        ]
      }
    ];
  }

ngOnInit() {
this.route.params.subscribe(params => {
  this.courseId = params['id'];
  this.getCourseDetails();
});
}

HTML:

<tree-root [nodes]="tree"></tree-root>

Believe there are no sytax errors as I can see root1 and root2.

Thank you.

Upvotes: 4

Views: 4541

Answers (3)

Brueni92
Brueni92

Reputation: 137

If this issue occurs after migrating to @circlon/angular-tree-component, you should use @import '~@circlon/angular-tree-component/css/angular-tree-component.css' in your src/styles.css. See also: changelog

Upvotes: 0

Daniel Mariano
Daniel Mariano

Reputation: 61

Added @import '~angular-tree-component/dist/angular-tree-component.css'; to the src/styles.css file and worked.

Upvotes: 6

ronenmiller
ronenmiller

Reputation: 1137

I believe you need to call getCourseDetails() in your constructor or in ngOnInit() which should be implemented as the class declaration states.

Upvotes: 1

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