I created a custom pipe module and imported it in my custom module,but it's not working
limit.pipe
import { Pipe, PipeTransform } from '#angular/core';
#Pipe({
name: 'limitTo'
})
export class RcycLimitPipe implements PipeTransform {
transform(value: any, args?: any): any {
let limit = args ? parseInt(args, 10) : 10;
let trail = '...';
return value.length > limit ? value.substring(0, limit) + trail : value;
}
}
limit.pipe.module
import { NgModule } from '#angular/core';
import { CommonModule } from '#angular/common';
import { RcycLimitPipe } from './rcyc-limit.pipe';
#NgModule({
imports: [
CommonModule
],
declarations: [
RcycLimitPipe
],
exports: [
RcycLimitPipe
]
})
export class RcycLimitPipeModule { }
then I imported it in my custom modules.
import { NgModule } from '#angular/core';
import { ChannelsComponent } from './rcyc-channels.component';
import { routing } from './rcyc-channels.routing';
import { CommonModule } from '#angular/common';
import { NgxCarouselModule } from "ngx-carousel";
import { RcycChannelsService } from "./rcyc-channels.service";
import { RcycLimitPipeModule } from "../../rcyc-pipes/rcyc-limit/rcyc-limit.module";
import { RcycDefaultImagePipeModule } from '../../rcyc-pipes/rcyc-default-image/rcyc-default-image.module';
#NgModule({
imports: [routing,CommonModule,NgxCarouselModule,RcycLimitPipeModule,RcycDefaultImagePipeModule],
declarations: [ChannelsComponent],
providers: [RcycChannelsService]
})
export class ChannelsModule {}
but it still showing an error by telling that 'the limit and the 'defaultimage' could not be found.
this is my error
what the issue is here?please help me
Do you really need a separate module for your pipe? After all, you are really just importing NgModule, CommonModule (which you also import in your main module) and RcycLimitPipe.
You could simply remove limit.pipe.module altogether, import RcycLimitPipe in your main module and add it to its declarations.
Related
I have a simple task I'm trying to accomplish. I've created a SharedModule with a component called InputComponent. I want to use this component in SigninComponent which is part of the AuthModule. I export the InputComponent from SharedModule and import the SharedModule into the AuthModule. However, when I use <app-input>, I get the following error:
src/app/auth/signin/signin.component.html:3:5 - error NG8001: 'app-input' is not a known element:
1. If 'app-input' is an Angular component, then verify that it is part of this module.
shared.module.ts
import { NgModule } from '#angular/core';
import { CommonModule } from '#angular/common';
import { InputComponent } from './input/input.component';
#NgModule({
declarations: [
InputComponent
],
imports: [
CommonModule
],
exports: [
InputComponent
]
})
export class SharedModule { }
input.component.ts
import { Component, OnInit, Input } from '#angular/core';
#Component({
selector: 'app-input',
templateUrl: './input.component.html',
styleUrls: ['./input.component.css']
})
export class InputComponent implements OnInit {
#Input() label?:string;
#Input() inputType?:string;
constructor() { }
ngOnInit(): void {
}
}
auth.module.ts
import { NgModule } from '#angular/core';
import { CommonModule } from '#angular/common';
import { SharedModule } from '../shared/shared.module';
import { SigninComponent } from './signin/signin.component';
import { SignupComponent } from './signup/signup.component';
import { SignoutComponent } from './signout/signout.component';
#NgModule({
declarations: [
SigninComponent,
SignupComponent,
SignoutComponent
],
imports: [
CommonModule,
SharedModule
]
})
export class AuthModule { }
signin.component.html
<h1>Sign In</h1>
<form>
<app-input inputType="email" label="Email Address"></app-input>
</form>
Any help would be greatly appreciated. I feel like I'm missing something small and just can't figure it out.
Extra note
I have other components within the same AuthModule (SignoutComponent for example), that will throw the same error if I try to use <app-signout>
Posting here just incase someone runs into something similar.
Due to how I had routing setup, I was eagerly loading my Auth components. (not lazy loading) In order to get this to work, I needed to import my AuthModule to my AppModule.
I am creating my app project with ionic 4.
In the past, i.e. ionic 3, I can import TranslateModule.forChild() for every page module.ts. But with ionic 4, if two pages get loading TranslateModule.forChild(), it will cause Maximum call stack size exceeded. If I delete one of them, it will works fine without stack size but just that page cannot translate any more.
Actually, my ionic version is 5.4.6.
Here are my codes:
app.module.ts
import { NgModule } from '#angular/core';
import { BrowserModule } from '#angular/platform-browser';
import { RouteReuseStrategy } from '#angular/router';
import { IonicModule, IonicRouteStrategy } from '#ionic/angular';
import { SplashScreen } from '#ionic-native/splash-screen/ngx';
import { StatusBar } from '#ionic-native/status-bar/ngx';
import { AppComponent } from './app.component';
import { AppRoutingModule } from './app-routing.module';
import { TranslateModule, TranslateLoader } from '#ngx-translate/core';
import { TranslateHttpLoader } from '#ngx-translate/http-loader';
import { HttpClientModule, HttpClient } from '#angular/common/http';
export function createTranslateLoader(http: HttpClient) {
return new TranslateHttpLoader(http, './assets/i18n/', '.json');
}
#NgModule({
declarations: [AppComponent],
entryComponents: [],
imports: [
BrowserModule,
IonicModule.forRoot(),
AppRoutingModule,
HttpClientModule,
TranslateModule.forRoot({
loader: {
provide: TranslateLoader,
useFactory: (createTranslateLoader),
deps: [HttpClient]
}
}),
],
providers: [
StatusBar,
SplashScreen,
{ provide: RouteReuseStrategy, useClass: IonicRouteStrategy }
],
bootstrap: [AppComponent],
exports: [ TranslateModule ]
})
export class AppModule {}
**home.module.ts**
import { NgModule } from '#angular/core';
import { CommonModule } from '#angular/common';
import { IonicModule } from '#ionic/angular';
import { FormsModule } from '#angular/forms';
import { RouterModule } from '#angular/router';
import { HomePage } from './home.page';
import { TranslateModule } from '#ngx-translate/core';
#NgModule({
imports: [
CommonModule,
FormsModule,
IonicModule,
RouterModule.forChild([
{
path: '',
component: HomePage
}
]),
TranslateModule.forChild()
],
declarations: [HomePage]
})
export class HomePageModule {}
**auth.module.ts**
import { NgModule } from '#angular/core';
import { CommonModule } from '#angular/common';
import { FormsModule } from '#angular/forms';
import { IonicModule } from '#ionic/angular';
import { AuthPage } from './auth.page';
import {TranslateModule} from '#ngx-translate/core';
#NgModule({
imports: [
CommonModule,
FormsModule,
IonicModule,
TranslateModule.forChild()
],
declarations: [AuthPage]
})
export class AuthPageModule {}
I just pass the same issue and solved it, you should treat all your pages as LazyLoad just as you're actually doing in the home.module:
RouterModule.forChild([
{
path: '',
component: HomePage
}
]),
So in your auth.module the imports declaration must contain the RouterModule too:
RouterModule.forChild([
{
path: '',
component: AuthPage
}
])
...
That should do the trick and avoid the stack size exceeded. If you're using something as a SharedModule, I suggest you to add the TranslateModule in it to make it easier in your app structure:
import { TranslateModule } from '#ngx-translate/core';
#NgModule({
declarations: [],
imports: [
...
TranslateModule,
],
exports: [
...
TranslateModule,
]
})
export class SharedModule { }
Then in any of your next pages modules, just import the SharedModule and it's done:
imports: [
...
SharedModule,
]
Hope it helps!
So I have two components, ChartsComponent (renders charts) &
DataComponent (displays charts among other data, tables, etc).
The file system would be like:
app/charts/
app/entities/data/
ChartsComponent renders successfully when rendered into its own page with its own route. DataComponent works but can't render ChartsComponent through selector. Console displays no error at all. I tried to call ChartsComponent's selector in DataComponent like this:
data.component.html:
<chart-data></chart-data>
charts.component.html:
<div [chart]="chart1"></div>
charts.component.ts:
import { Component, OnInit} from '#angular/core';
import { Chart } from 'angular-highcharts';
//I'm loading data into the chart statically for trial
import { jsonData} from '../json-data/chart-data';
#Component({
selector: 'chart-data',
templateUrl: './charts.component.html'
})
export class ChartsComponent implements OnInit{
//Chart
chart1: Chart;
countries: any;
num: any;
chartData: any;
constructor() {
this.barChart();
}
ngOnInit(){}
barChart(){
this.chartData = jsonData;
this.chart1 = new Chart(this.chartData);
}
}
data.component.ts:
import { Component, OnInit, OnDestroy } from '#angular/core';
import { HttpResponse, HttpErrorResponse } from '#angular/common/http';
import { ActivatedRoute, Router } from '#angular/router';
import { DataService } from './provision.service';
import { ChartsComponent } from '../../charts/charts.component';
#Component({
selector: 'data-page',
templateUrl: './data.component.html'
})
export class DataComponent implements OnInit, OnDestroy {
}
charts.module.ts:
import { NgModule } from '#angular/core';
import { RouterModule } from '#angular/router';
import { ChartsComponent } from './';
#NgModule({
declarations: [
ChartsComponent
],
exports: [
ChartsComponent
]
})
export class ChartsModule {}
data.module.ts:
import { RouterModule } from '#angular/router';
import { ChartsModule } from '../../charts';
import { ChartsComponent } from '../../charts/charts.component';
import {
DataService,
DataComponent,
DataRoute
} from './';
#NgModule({
imports: [],
declarations: [DataComponent],
entryComponents: [
DataComponent,
ChartsComponent
],
providers: [
DataService
]
})
export class DataModule {}
charts/index.ts:
export * from './charts.component';
export * from './charts.module';
export * from './charts.route';
app.module.ts:
import './vendor.ts';
import { NgModule, Injector } from '#angular/core';
import { BrowserModule } from '#angular/platform-browser';
import { HTTP_INTERCEPTORS } from '#angular/common/http';
import { Ng2Webstorage, LocalStorageService, SessionStorageService } from 'ngx-webstorage';
import { EventManager } from 'ng-blahblah';
import { BrowserAnimationsModule } from '#angular/platform-browser/animations';
import { ChartModule } from 'angular-highcharts';
import { ChartsComponent } from './charts';
import { AuthInterceptor } from './blocks/interceptor/auth.interceptor';
import { AuthExpiredInterceptor } from './blocks/interceptor/auth-expired.interceptor';
import { ErrorHandlerInterceptor } from './blocks/interceptor/errorhandler.interceptor';
import { NotificationInterceptor } from './blocks/interceptor/notification.interceptor';
import { SharedModule, UserRouteAccessService } from './shared';
import { AppRoutingModule} from './app-routing.module';
import { HomeModule } from './home/home.module';
import { AdminModule } from './admin/admin.module';
import { AccountModule } from './account/account.module';
import { EntityModule } from './entities/entity.module';
import { PaginationConfig } from './blocks/config/uib-pagination.config';
import {
MainComponent,
NavbarComponent,
FooterComponent,
ProfileService,
PageRibbonComponent,
ActiveMenuDirective,
ErrorComponent
} from './layouts';
#NgModule({
imports: [
BrowserModule,
BrowserAnimationsModule,
AppRoutingModule,
SharedModule,
HomeModule
EntityModule,
ChartModule
],
declarations: [
MainComponent,
NavbarComponent,
ErrorComponent,
PageRibbonComponent,
ActiveMenuDirective,
FooterComponent,
ChartsComponent
],
providers: [
ProfileService,
PaginationConfig,
UserRouteAccessService,
{
provide: HTTP_INTERCEPTORS,
useClass: AuthInterceptor,
multi: true,
deps: [
LocalStorageService,
SessionStorageService
]
},
{
provide: HTTP_INTERCEPTORS,
useClass: AuthExpiredInterceptor,
multi: true,
deps: [
Injector
]
},
{
provide: HTTP_INTERCEPTORS,
useClass: ErrorHandlerInterceptor,
multi: true,
deps: [
EventManager
]
},
{
provide: HTTP_INTERCEPTORS,
useClass: NotificationInterceptor,
multi: true,
deps: [
Injector
]
},
/*{
provide: NgbDateParserFormatter,
useFactory: () => { return new NgbDateMomentParserFormatter("DD-MM-YYYY") }
}*/
],
bootstrap: [ MainComponent ]
})
export class AppModule {}
I think that's all what's relevant, if someone could explain what's wrong, missing and why, it would be of great help. In the meanwhile I'll try to document myself better on the module/import system.
Ok so basically, the module.ts file in which you are going to import the ChartsComponent and the ChartModule (we are talking highcharts here) needs to also export ChartsComponent.
Import both, then under NgModule import ChartModule, and under declarations and exports tag ChartsComponent. On the destination data.module import ChartsComponent and tag it under NgModule - entryComponents. On the destination DataComponent import ChartsComponent.
I'm using Angular 4 with material. And I have main two components...
1) Login and 2) Dashboard
There are lazy loading components in dashboard like profile , employee etc...
I want to set header and for that I have used <mat-toolbar>
<mat-toolbar color="primary">
<mat-toolbar-row>
<span>My application</span>
<span class="example-spacer"></span>
<button mat-button>Logout</button>
</mat-toolbar-row>
</mat-toolbar>
and component file is this .
import { Component, OnInit } from '#angular/core';
#Component({
selector: 'app-header',
templateUrl: './header.component.html',
styleUrls: ['./header.component.css']
})
export class HeaderComponent implements OnInit {
constructor() { }
ngOnInit() {
}
}
To use this component in all dashboard I have create one shared module file.
In src/app/shared/modules/header/header.module.ts
import { NgModule } from '#angular/core';
import { CommonModule } from '#angular/common';
import { HeaderComponent } from
'../../../shared/components/header/header.component';
import { MaterialModule } from '../../../material.module';
#NgModule({
imports: [
CommonModule,
MaterialModule
],
declarations: [HeaderComponent],
exports:[HeaderComponent]
})
export class HeaderModule { }
I have import component in module file and put in exports so, I think I'm able to use header component.
Now I'm trying to use it in dashboard component.
import { NgModule } from '#angular/core';
import { CommonModule } from '#angular/common';
import { DashboardComponent } from './dashboard.component';
import { DashboardRoutingModule } from './dashboard-routing.module';
import { MaterialModule } from '../material.module';
import { HeaderModule } from '../shared/modules/header/header.module';
#NgModule({
imports: [
CommonModule,
DashboardRoutingModule,
MaterialModule,
HeaderModule
],
declarations: [DashboardComponent]
})
export class DashboardModule { }
I have also import module and set header component in entryComponetnt in app.module.ts file also...
app.module.ts
import { HeaderModule } from './shared/modules/header/header.module';
imports: [
FormsModule,
HeaderModule
],
entryComponents:[HeaderComponent]
The issue is I'm getting header when I go dashboard page. And also I'm not getting any error in console.
I just add my shared component's selector value in dashboard's html file.
<app-header></app-header>
It works for me!
I'm trying to use the Angular flash message module as shown in this post:
https://www.npmjs.com/package/angular-flash-message
However, I get this error:
> compiler.js:485 Uncaught Error: Template parse errors:
> 'flash-messages' is not a known element:
>
> 1. If 'flash-messages' is an Angular component, then verify that it is part of this module.
> 2. If 'flash-messages' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '#NgModule.schemas' of this component
> to suppress this message. ("<app-navbar></app-navbar><div
> class="container">[ERROR
> ->]<flash-messages></flash-messages><router-outlet></router-outlet> </div>"): ng:///AppModule/AppComponent.html#2:8
app.module.ts
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { FormsModule } from '#angular/forms';
import { Routes, RouterModule } from '#angular/router';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { NavbarComponent } from './components/navbar/navbar.component';
import { LoginComponent } from './components/login/login.component';
import { HomeComponent } from './components/home/home.component';
import { DashboardComponent } from './components/dashboard/dashboard.component';
import { ProfileComponent } from './components/profile/profile.component';
import { RegisterComponent } from './components/register/register.component';
import { ValidateService } from './services/validate.service';
import {FlashMessageModule} from 'angular-flash-message'
#NgModule({
declarations: [
AppComponent,
NavbarComponent,
LoginComponent,
HomeComponent,
DashboardComponent,
ProfileComponent,
RegisterComponent
],
imports: [
BrowserModule,
AppRoutingModule,
RouterModule,
FormsModule,
FlashMessageModule
],
providers: [ValidateService],
bootstrap: [AppComponent]
})
export class AppModule { }
app.component.html
<app-navbar></app-navbar>
<div class="container">
<flash-messages></flash-messages>
<router-outlet></router-outlet>
</div>
registration.component.ts
import { Component, OnInit } from '#angular/core';
import { FormsModule } from '#angular/forms';
import { ValidateService } from '../../services/validate.service';
import { FlashMessage } from 'angular-flash-message';
#Component({
selector: 'app-register',
templateUrl: './register.component.html',
styleUrls: ['./register.component.scss']
})
export class RegisterComponent implements OnInit {
name: String;
username: String;
email: String;
password: String;
constructor(
private validateService: ValidateService,
private flashMessage: FlashMessage
) { }
ngOnInit() {
}
onRegisterSubmit(){
const user = {
name: this.name,
username: this.username,
email: this.email,
password: this.password
}
//Required fields
if(!this.validateService.validateRegister(user)){
//fill in all fields
this.flashMessage.info("Incorrect!")
return false;
}
if(!this.validateService.validateEmail(user.email)){
//email incorrect
return false;
}
}
}
I'm trying to display a flash message after validating the user's input.
I'm new to Angular and MEAN apps and this is actually an app shown in a tutorial using Angular 2.
Can someone help me out? Thanks!
I'm not sure if the
import {FlashMessageModule} from 'angular-flash-message'
works properly. I would suggest using
import {FlashMessageModule} from 'angular2-flash-messages'`.
Their documentation is here: https://www.npmjs.com/package/angular2-flash-messages
I went through the angular-flash messages docs, angular2-flash-message docs (without the 's' at the end), and also angular2-flash-messages (with the 's' at the end), and the only one that worked for me was the last one.
Also, in addition to your imports, I've also found that it helps to make sure you have #angular/common installed, just in case:
npm install #angular/common --save
Hope this helps
ooh i think it shouldn't be
ERRONEOUS
imports: [
BrowserModule,
FormsModule,
RouterModule.forRoot(appRoutes),
AngularFireModule.initializeApp(fireBase),
FlashMessagesModule
],
it should be
imports: [
BrowserModule,
FormsModule,
RouterModule.forRoot(appRoutes),
AngularFireModule.initializeApp(fireBase),
FlashMessagesModule.forRoot()
],
I too had the same problem and solved it by adding FlashMessageModule.forRoot() in my imports