Btukfyl

I have two modules in my angular 6 application one is app module and another one is User module, I am trying to implement lazy loading of the user module. Routing works if I manually hit the URL then the correct page from user module is getting displayed. But when I tried to navigate from header component it's not navigating to user page instead it's going to the default page.

Header.html

<form class="form-inline my-2 my-lg-0">

      <button class="btn btn-secondary my-2 my-sm-0" type="submit" routerLink="/user/login">Login</button>

      <button class="btn btn-secondary my-2 my-sm-0" type="submit" routerLink="/user/register">Register</button>

    </form>

app-routing-module

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

import { Routes, RouterModule } from '@angular/router';

import { WelcomeComponent } from './components/welcome/welcome.component';

import { PagenotfoundComponent } from './components/pagenotfound/pagenotfound.component';



const routes: Routes = [

  {

    path:'welcome',

    component:WelcomeComponent

  },

  {

    path:'user',

    loadChildren:'./user/user.module#UserModule'

  },

  {

    path: '', 

    redirectTo: 'welcome', 

    pathMatch: 'full' },

  { 

    path: '**', 

    component: PagenotfoundComponent 

  }

];



@NgModule({

  imports: [RouterModule.forRoot(routes)],

  exports: [RouterModule]

})

export class AppRoutingModule { }

User routing module

import { NgModule } from '@angular/core';

import { Routes, RouterModule } from '@angular/router';

import { LoginComponent } from './components/login/login.component';

import { RegisterComponent } from './components/register/register.component';



const routes: Routes = [

  {

    path:'login',

    component: LoginComponent

  },

  {

    path:'register',

    component:RegisterComponent

  },

  {

    path:'',

    redirectTo:'login',

    pathMatch:'full'

  }

];



@NgModule({

  imports: [RouterModule.forChild(routes)],

  exports: [RouterModule]

})

export class UserRoutingModule { }

App module

import { BrowserModule } from '@angular/platform-browser';

import { NgModule } from '@angular/core';



import { AppRoutingModule } from './app-routing.module';

import { AppComponent } from './app.component';

import { HeaderComponent } from './components/header/header.component';

import { FooterComponent } from './components/footer/footer.component';

import { WelcomeComponent } from './components/welcome/welcome.component';

import { PagenotfoundComponent } from './components/pagenotfound/pagenotfound.component';



@NgModule({

  declarations: [

    AppComponent,

    HeaderComponent,

    FooterComponent,

    WelcomeComponent,

    PagenotfoundComponent

  ],

  imports: [

    BrowserModule,

    AppRoutingModule

  ],

  providers: ,

  bootstrap: [AppComponent]

})

export class AppModule { }

So when I click on the login button, I can see the login page but immediately it is redirecting to welcome page (http://localhost:4200/welcome)

I think you just mapped your router-outlet in the wrong component - please check that

I have tried your same scenario in stackblitz please have a look

app.component.html

<form class="form-inline my-2 my-lg-0">

      <button class="btn btn-secondary my-2 my-sm-0" type="submit" routerLink="/user/login">Login</button>

      <button class="btn btn-secondary my-2 my-sm-0" type="submit" routerLink="/user/register">Register</button>

    </form>



<router-outlet></router-outlet>

app.module.ts

import { NgModule } from '@angular/core';

import { BrowserModule } from '@angular/platform-browser';

import { FormsModule } from '@angular/forms';

import { RouterModule, Routes} from '@angular/router';

import { AppComponent } from './app.component';

import { HelloComponent } from './hello.component';



const routes: Routes = [

  {

    path:'welcome',

    component:HelloComponent

  },

  {

    path:'user',

    loadChildren:'./modules/lazy/lazy.module#LazyModule'

  },

  {

    path: '', 

    redirectTo: 'welcome', 

    pathMatch: 'full' 

  }



];



@NgModule({

  imports:      [ BrowserModule, FormsModule, RouterModule.forRoot(routes) ],

  declarations: [ AppComponent, HelloComponent ],

  bootstrap:    [ AppComponent ]

})

export class AppModule { }

Everything worked as expected - please have a look to the link above - hope this helps you - Happy coding :)

Update

Finally it took much time to find the issue and solve it - but the issue seems to be tiny enough to eat our time :) - Yep the issue was a button tag with type as submit and that too wrapped inside a form tag - This cause the issue and makes the page to reload as it assumes that a form as been submitted and it renders the app component back

So first fix is in your header.component.html either remove your form tag or change your button type as type="button" if not change it to an anchor tag

<form class="form-inline my-2 my-lg-0">

        <button class="btn btn-secondary my-2 my-sm-0" type="button" [routerLink]="['user']">Login</button>

        <button class="btn btn-secondary my-2 my-sm-0" type="button" routerLink="/user/register">Register</button>

      </form>

This will solve your issue completely - rest are the fixes need to be done based on your convenience

app-routing.module.ts

Don't bootstrap over here your bootstrap should only be on the app.module so your routing @NgModule() should be like this

@NgModule({

  imports: [RouterModule.forRoot(routes)],

  exports: [RouterModule],

})

export class AppRoutingModule { }

user-routing.module.ts

You need to export your RouteModule and read it from your LazyModule so your routing @NgModule() should be like this

@NgModule({

  imports: [

    RouterModule.forChild(routes)

  ],

  exports: [RouterModule]

})

export class UserRoutingModule { }

That's all needed to fix everything and your code works perfectly - just feel free to share you concerns - cheers Happy coding :)