Client Side JSON to HTML in Angular 2 #3143 | Support Center

btg created 7 years ago

Hello,

I'm trying to get information contained in a JSON document to display information as a module on a dashboard on the Angular 2 project. I can get code to compile, but I don't know where I'm going wrong to get it to display. Can anyone help me? :)

info-json.component.html

<div [@routerTransition]>

  <div class="card">
    <div class="header" *ngFor="let item of data">
      <h4 class="title" ng-model="item.name">{{item.name}}</h4>
      <p class="category" ng-model="item.city">{{item.city}}</p>
    </div>
    <p>Description.</p>
  </div>

</div>

info-json.component.ts

import { Component, Injector, AfterViewInit } from '@angular/core';
import { AppComponentBase } from '@shared/common/app-component-base';
import { appModuleAnimation } from '@shared/animations/routerTransition';
import { Http } from '@angular/http';


@Component({
    templateUrl: './info-json.component.html',
    animations: [appModuleAnimation()]
})
export class InfoJsonComponent extends AppComponentBase implements AfterViewInit {


    constructor(
        injector: Injector,
        private _http : Http
    ) {
        super(injector);
    }

    public data: any[];

    ngAfterViewInit(): void {


        this._http.get("app/data/data.json")
            .subscribe((data) => {
                setTimeout(() => {
                    this.data = data.json();
                }, 1000);
            });
    }

}

dashboard.component.html

<div ng-include="'info-json.component.html'"></div>

main.module.ts

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';

import { DashboardComponent } from './dashboard/dashboard.component';

import { ModalModule, TabsModule, TooltipModule } from 'ngx-bootstrap';
import { AppCommonModule } from '@app/shared/common/app-common.module';
import { UtilsModule } from '@shared/utils/utils.module';
import { MainRoutingModule } from './main-routing.module';

import { InfoJsonComponent } from './dashboard/info-json.component';

@NgModule({
    imports: [
        CommonModule,
        FormsModule,
        HttpModule,
        ModalModule,
        TabsModule,
        TooltipModule,
        AppCommonModule,
        UtilsModule,
        MainRoutingModule
    ],
    declarations: [
        DashboardComponent,
        CreateSlideModalComponent,
        InfoJsonComponent

    ]
})
export class MainModule { }

6 Answer(s)

0

alirizaadiyahsi created 7 years ago

Hi,

Is there error message anywhere? Can you provide us if there is an error message in your browser dev-console?
0

btg created 7 years ago

<cite>alirizaadiyahsi: </cite> Hi,

Is there error message anywhere? Can you provide us if there is an error message in your browser dev-console?

No errors at all in the console. NG Live Development server compiles successfully. The HTML component doesn't show on the dashboard though.
0
ismcagdas created 7 years ago
Support Team
Hi,

As far as I know, ng-include is for AngularJS and it is not available in angular 2. You need to set a selector for your component like this:

@Component({ selector: 'info-json', templateUrl: './info-json.component.html', animations: [appModuleAnimation()] })

Then, you can use it in your other view like this:

<info-json></info-json>

Thanks.
0

btg created 7 years ago

Aaah, I knew it was something I had overlooked. That fixed the display issue, but now I get an error that the resource cannot be found. Any thoughts on this, or should I open a new topic?

btg created 7 years ago

<cite>btg: </cite> Aaah, I knew it was something I had overlooked. That fixed the display issue, but now I get an error that the resource cannot be found. Any thoughts on this, or should I open a new topic?

I should be more specific. It seems as though my AJAX request is not able to find the file (easily fixable), but it the bigger issue is the information in the JSON is not accessible I guess. Do I need to run everything through the database, even if I just want to use a standable JSON from a feed??

The error in console is:

platform-content.js:682 post-publish handshake listeners already initialized
jquery-migrate.min.js:2 JQMIGRATE: Migrate is installed, version 3.0.0
2zone.js:2176 OPTIONS http://localhost:8080/assets/json/data.json 405 (Method Not Allowed)
scheduleTask @ zone.js:2176
ZoneDelegate.scheduleTask @ zone.js:384
onScheduleTask @ zone.js:274
ZoneDelegate.scheduleTask @ zone.js:378
Zone.scheduleTask @ zone.js:209
Zone.scheduleMacroTask @ zone.js:232
(anonymous) @ zone.js:2200
send @ VM10989:3
(anonymous) @ http.es5.js:1254
Observable._trySubscribe @ Observable.js:57
Observable.subscribe @ Observable.js:45
MapOperator.call @ map.js:54
Observable.subscribe @ Observable.js:42
CatchOperator.call @ catch.js:79
Observable.subscribe @ Observable.js:42
MapOperator.call @ map.js:54
Observable.subscribe @ Observable.js:42
CatchOperator.call @ catch.js:79
Observable.subscribe @ Observable.js:42
webpackJsonp.1241.InfoComponent.ngAfterViewInit @ info-json.component.ts:28
callProviderLifecycles @ core.es5.js:11045
callElementProvidersLifecycles @ core.es5.js:11020
callLifecycleHooksChildrenFirst @ core.es5.js:11004
checkAndUpdateView @ core.es5.js:12026
callViewAction @ core.es5.js:12333
execComponentViewsAction @ core.es5.js:12279
checkAndUpdateView @ core.es5.js:12024
callViewAction @ core.es5.js:12333
execEmbeddedViewsAction @ core.es5.js:12305
checkAndUpdateView @ core.es5.js:12019
callViewAction @ core.es5.js:12333
execComponentViewsAction @ core.es5.js:12279
checkAndUpdateView @ core.es5.js:12024
callViewAction @ core.es5.js:12333
execEmbeddedViewsAction @ core.es5.js:12305
checkAndUpdateView @ core.es5.js:12019
callViewAction @ core.es5.js:12333
execComponentViewsAction @ core.es5.js:12279
checkAndUpdateView @ core.es5.js:12024
callWithDebugContext @ core.es5.js:13006
debugCheckAndUpdateView @ core.es5.js:12546
ViewRef_.detectChanges @ core.es5.js:10115
(anonymous) @ core.es5.js:5052
ApplicationRef_.tick @ core.es5.js:5052
(anonymous) @ core.es5.js:4932
ZoneDelegate.invoke @ zone.js:365
onInvoke @ core.es5.js:4125
ZoneDelegate.invoke @ zone.js:364
Zone.run @ zone.js:125
NgZone.run @ core.es5.js:3994
next @ core.es5.js:4932
schedulerFn @ core.es5.js:3828
SafeSubscriber.__tryOrUnsub @ Subscriber.js:236
SafeSubscriber.next @ Subscriber.js:185
Subscriber._next @ Subscriber.js:125
Subscriber.next @ Subscriber.js:89
Subject.next @ Subject.js:55
EventEmitter.emit @ core.es5.js:3814
NgZone.checkStable @ core.es5.js:4090
NgZone.setHasMicrotask @ core.es5.js:4174
onHasTask @ core.es5.js:4137
ZoneDelegate.hasTask @ zone.js:418
ZoneDelegate._updateTaskCount @ zone.js:438
Zone._updateTaskCount @ zone.js:262
Zone.runTask @ zone.js:182
drainMicroTaskQueue @ zone.js:591
ZoneTask.invoke @ zone.js:464
dashboard:1 XMLHttpRequest cannot load http://localhost:8080/assets/json/data.json. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:4200' is therefore not allowed access. The response had HTTP status code 405.

0

ismcagdas created 7 years ago
Support Team

Hi,

According to latest error message

Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:4200' is therefore not allowed access. The response had HTTP status code 405.

This is a cross origin request error. Do you get this error on development or production ?

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