Module has no exported member 'http' [2305] - angular6

Hello I am trying to import http call from '#angular/common/http' and am getting error message that module has no exported member 'http'
Error:[ts] Module '"e:/car/node_modules/#angular/common/http"' has no exported member 'Http'. [2305]
import {
RouterModule
} from '#angular/router';
import {
BrowserModule
} from '#angular/platform-browser';
import {
NgModule
} from '#angular/core';
import {
AppRoutingModule
} from './app-routing.module';
import {
AppComponent
} from './app.component';
import {
HomeComponent
} from './home/home.component';
import {
HttpClientModule
} from '#angular/common/http';
#NgModule({
declarations: [
AppComponent,
HomeComponent,
],
imports: [
BrowserModule,
AppRoutingModule,
HttpClientModule,
RouterModule.forRoot([{
path: '',
component: HomeComponent
}])
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule {}
import {
Http
} from '#angular/common/http';
import {
Component,
OnInit
} from '#angular/core';
#Component({
selector: 'app-home',
templateUrl: './home.component.html',
styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {
constructor(private http: Http) {}
products = [];
fetchData = function() {
this.http.get('http://localhost:5555/products').subscribe(
(res: Response) => {
this.products = res.json();
}
);
};
ngOnInit() {
this.fetchData();
}
}
the below code is used for inserting json file which includes the details

HttpClientModule will inject HttpClient service not the Http.
Please use HttpClient in constructor injection in the HomeComponent.
constructor(private http: HttpClient) {}
For Reference created sample stackblitz code.

Related

Cannot use one of my element declared in my own library

I am trying to make a library that I can use a component from but angular says that the element I use is not recognized as an element. I am trying to export the VitalSignLinesListComponent.
The steps I follow are:
declare the component in the library module
export the component
in the library module
export the component in the public API
import the module from the library
place the element in the html
file
receive error
The error I am getting:
ERROR in src/app/app.component.html:2:1 - error NG8001:
'lib-vital-sign-lines-list' is not a known element: 1. If
'lib-vital-sign-lines-list' is an Angular component, then verify that
it is part of this module.
2. If 'lib-vital-sign-lines-list' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '#NgModule.schemas' of this component
to suppress this message.
COMPONENT:
#Component({
selector: 'lib-vital-sign-lines-list',
templateUrl: './vital-sign-lines-list.component.html',
styleUrls: ['./vital-sign-lines-list.component.css']
})
export class VitalSignLinesListComponent implements OnInit {
#Input()
idEdDossier: string;
}
LIBRARY MODULE:
import { NgModule } from '#angular/core';
import { VitalsignsComponent } from './vitalsigns.component';
import { BrowserModule } from '#angular/platform-browser';
import { HttpClientModule } from '#angular/common/http';
import { RouterModule, Routes } from '#angular/router';
import { ModalInputComponent } from './modal-input/modal-input.component';
import { VitalSignLinesListComponent } from './vital-sign-lines-list/vital-sign-lines-list.component';
import { NgSelectModule } from '#ng-select/ng-select';
import { FormsModule } from '#angular/forms';
import { EcareLibModule } from 'ecarelib'
import { NgbModule } from '#ng-bootstrap/ng-bootstrap';
import { ComboBoxComponent } from './combo-box/combo-box.component';
import { ComboBoxPipe } from './combo-box/combo-box.pipe';
import { LogService } from './services/log.service';
import { ClickOutsideDirective } from './vital-sign-lines-list/click-outside.directive';
const appRoutes: Routes = [
{ path: 'modal', component: ModalInputComponent },
{ path: 'vitalSignLinesList', component: VitalSignLinesListComponent }
];
// #dynamic
#NgModule({
declarations: [
VitalsignsComponent,
ModalInputComponent,
VitalSignLinesListComponent,
ComboBoxComponent,
ComboBoxPipe,
ClickOutsideDirective
],
imports: [
BrowserModule,
HttpClientModule,
EcareLibModule.forRoot(),
NgSelectModule,
RouterModule.forRoot(appRoutes, { enableTracing: false }),
FormsModule,
NgbModule
],
providers: [LogService],
exports: [VitalsignsComponent, VitalSignLinesListComponent]
})
export class VitalsignsModule {
}
PUBLIC-API:
export * from './lib/vitalsigns.service';
export * from './lib/vitalsigns.component';
export * from './lib/vitalsigns.module';
export * from './lib/vital-sign-lines-list/vital-sign-lines-list.component';
IMPORT LIBRARY: (VitalsignsModule)
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { NgSelectModule } from '#ng-select/ng-select';
import { FormsModule } from '#angular/forms';
import {NgbModule} from '#ng-bootstrap/ng-bootstrap';
import { AppComponent } from './app.component';
import { HttpClientModule } from '#angular/common/http';
import { RouterModule, Routes } from '#angular/router';
import { EcareLibModule } from 'ecarelib';
import { VitalsignsModule } from 'vitalsigns';
#NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
EcareLibModule.forRoot(),
HttpClientModule,
RouterModule.forRoot([]),
VitalsignsModule,
NgbModule,
NgSelectModule,
FormsModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
HTML:
<lib-vital-sign-lines-list [idEdDossier]=idDossier></lib-vital-sign-lines-list>

on refresh how to stay on same route in angular6?

in my code two components are present.
1)app component
2)login component
after login it is going to another page.but on refresh it comes to login page.please solve this issue.i am using angular6.please provide code how to solve this problem.
app.module.ts
--------------------------------
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { PloginComponent } from './plogin/plogin.component';
import { AfterploginComponent } from './afterplogin/afterplogin.component';
import { RouterModule } from '#angular/router';
import { ReactiveFormsModule } from '#angular/forms';
import { HttpClientModule } from '#angular/common/http';
#NgModule({
declarations: [
AppComponent,
PloginComponent,
AfterploginComponent
],
imports: [
BrowserModule,
AppRoutingModule,
ReactiveFormsModule,
HttpClientModule,
RouterModule.forRoot([
{
path : 'after-login',
component : AfterploginComponent
},
{
path : 'before-login',
component : PloginComponent
}
])
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
app.component.ts
-------------------------------------------------
import { Component ,OnInit} from '#angular/core';
import { Router} from '#angular/router';
#Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{
title = 'login';
constructor(private router :Router){
}
ngOnInit(){
this.router.navigateByUrl('before-login');
}
}
i am beginer to angular6.on refresh how to stay on same page i don't know.
plese tell me the different approaches to solve the problem easily.

Angular 6 component not showing up

I just started learning Angular yesterday so I apologize if I'm missing something obvious, but I am trying to display a component on the app.component.html, however, it is not showing up.
TS file for the component I am trying to display:
import { Component, OnInit } from '#angular/core';
import { ImageService } from '../shared/image.service';
#Component({
selector: 'image-list',
templateUrl: './image-list.component.html',
styleUrls: ['./image-list.component.css']
})
export class ImageListComponent implements OnInit {
images: any[];
constructor(private _imageService : ImageService ) { }
searchImages(query : string)
{
return this._imageService.getImage(query).subscribe
(
data => console.log(data),
error => console.log(error),
() => console.log("Request Completed!")
);
}
ngOnInit() {
}
}
image-list.component.html :
<button>Find Images</button>
app.component.html :
<image-list></image-list>
app.module.ts
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { AppComponent } from './app.component';
#NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
image.service.ts
import { Injectable } from "#angular/core";
import { environment } from "../../environments/environment";
import { Http, Headers } from "#angular/http";
import { map, filter, scan } from 'rxjs/operators';
#Injectable()
export class ImageService
{
private query: string;
private API_KEY: string = environment.API_KEY;
private API_URL: string = environment.API_URL;
private URL: string = this.API_URL + this.API_KEY + '&q=';
constructor(private _http: Http) {
}
getImage(query)
{
return this._http.get(this.URL + this.query).pipe(
map((res) => res.json));
}
}
I had a similar problem trying to use a component outside its module.
In this case, you have to export a component from your .module.ts:
#NgModule({
// …
declarations: [ MyComponent ],
exports: [ MyComponent ],
// …
})
You need to import your Component and your Service into your app.module.ts and then to declarations and to providers property
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { AppComponent } from './app.component';
import { ImageListComponent } from './image-list.component';
import { ImageService } from './image.service';
#NgModule({
declarations: [
AppComponent,
ImageListComponent
],
imports: [
BrowserModule
],
providers: [ ImageService ],
bootstrap: [AppComponent]
})
export class AppModule { }
Adjust ImageListComponent path into the import statement.
Teorically when you generate a component with Angular CLI with a command like this:
ng generate component image-list
it should update your app.module.ts file for you.
To generate a service use
ng generate service image
check this one
in src/app/app.module.ts
#NgModule({
declarations: [AppComponent],
imports: [BrowserModule, FormsModule, HttpClientModule],
bootstrap: [AppComponent],
})
export class AppModule {}
from this link: https://malcoded.com/posts/why-angular-not-works/
You may try the Angular tutorial from: https://angular.io/start . It shows how to render a custom Ansible component on the app.component.html page.
You just need to update the app.module.ts file. Assuming your component is named ImageListComponent:
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { RouterModule } from '#angular/router'; // add this line
import { AppComponent } from './app.component';
import { ImageListComponent } from './image-list/image-list.component'; // add this line
#NgModule({
declarations: [
AppComponent,
ImageListComponent // add this line
],
imports: [
BrowserModule,
// add the following 3 lines
RouterModule.forRoot([
{ path: '', component: ImageListComponent },
])
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
First try this, without adding any custom services.
It seems you have nothing that triggers the API call on your method searchImages in ImageComponent. Having a click eventListener on the <button>Find Images</button> tag should do the trick. Also register the ImageComponent and ImageService in your app.module.ts file.

Error FormBuilder is not a NgModule when build

when i try to start my angular app in local i have th error "Error FormBuilder is not a NgModule", i've tried everything i can do, npm install, check my package json, all things that can resolved my problem, Can you help me please or do you have any solution?
This is my component :
import { Component } from '#angular/core';
import { FormGroup, Validators, NgForm, FormBuilder } from '#angular/forms';
import { Router } from '#angular/router';
import { AuthentificationService } from './authentification.service';
#Component({
selector: 'app-authentification',
templateUrl: './authentification.component.html',
styleUrls: ['./authentification.component.css']
})
export class AuthentificationComponent {
loginForm: FormGroup;
error: string = '';
constructor(
private formBuilder: FormBuilder,
private authentificationService: AuthentificationService,
private router: Router
) {
this.loginForm = formBuilder.group({
'oxylaneId': ['', Validators.required],
'password': ['', Validators.required]
});
}
onSubmit() {
this.authentificationService
.authenticate(this.loginForm.value)
.subscribe(
data => {
localStorage.setItem('id_token', data.token);
this.router.navigate(['email']);
},
error => this.error = error.message
);
}
loginUser(form: NgForm) {
console.log(form.value);
}
onChange(deviceValue) {
console.log(deviceValue);
}
}
And my app.module with all my module and component
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { AppComponent } from './app.component';
import { FormsModule, FormBuilder, FormGroup, Validators } from '#angular/forms';
import { EmailcomponentComponent } from './emailcomponent/emailcomponent.component';
import { ColorcomponentComponent } from './colorcomponent/colorcomponent.component';
import { DesigncomponentComponent } from './designcomponent/designcomponent.component';
import { AppRoutingModule } from './app-routing.module';
import { TopBarComponent } from './top-bar/top-bar.component';
import { AuthentificationComponent } from './authentification/authentification.component';
#NgModule({
imports: [
BrowserModule,
FormsModule,
AppRoutingModule,
FormBuilder,
FormGroup,
Validators,
],
declarations: [
AppComponent,
EmailcomponentComponent,
ColorcomponentComponent,
DesigncomponentComponent,
TopBarComponent,
AuthentificationComponent,
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
as the error says: "FormBulder is not a NgModule" and it's not! You should neither import FormBuilder nor FormGroup in imports. Validators also do not belong in Imports unless it's a Feature Module of yours. Import FormsModule or ReactiveFormsModule instead, for example:
imports: [
BrowserModule,
FormsModule,
ReactiveFormsModule
AppRoutingModule
]
EDIT:
As best practice, never import FormsModule and ReactiveFormsModule, either one or another!

Error i n angular. Cannot GET /

I have a simple application and I am getting this error. Cannot GET /. and in the console this.Error in event handler for (unknown): TypeError: Cannot read property 'checked' of null
at Object.SL_BBL_locer (chrome-extension://noaijdpnepcgjemiklgfkcfbkokogabh/content/js/inject/translator.js:1174:41)
at chrome-extension://noaijdpnepcgjemiklgfkcfbkokogabh/content/js/inject/data.js:100:30
I really dont know , what I am doing wrong. Here are my codes.
app.module
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { AppComponent } from './app.component';
import { DashboardComponent } from './dashboard/dashboard.component';
import {AppRoutingModule} from './app-routing.module';
#NgModule({
declarations: [
AppComponent,
DashboardComponent
],
imports: [
BrowserModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
app.component
import { Component } from '#angular/core';
#Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
title = 'app';
}
**app.component.html**
<div>
<app-dashboard></app-dashboard>
</div>
dashboard.component
import { Component, OnInit } from '#angular/core';
#Component({
selector: 'app-dashboard',
templateUrl: './dashboard.component.html',
styleUrls: ['./dashboard.component.css']
})
export class DashboardComponent implements OnInit {
constructor() { }
ngOnInit() {
}
}
dashoboard.component.html
<div> Im here</div>
I assume that your workschedule.module is a feature module. In this case you need to add the CommonModule to the imports property of #NgModule:
#NgModule({
imports: [
CommonModule,
WorkScheduleRoutingModule
],
declarations: [
WorkscheduleComponent
],
providers: []
})