Angular 5项目路由问题求助：ng2-dashboard路由逻辑及跳转异常

Hey there, let's tackle your two issues with the ng2-dashboard project one by one—this stuff can feel confusing when it deviates from the standard Angular patterns you know!

First off, the ng2-dashboard uses a custom routing setup that's different from the straightforward Routes array you're familiar with. Here's why it feels unfamiliar:

• Instead of cramming all routes into a single AppRoutingModule with RouterModule.forRoot(), it splits routing logic across feature modules or uses a dedicated service to manage navigation dynamically.
• You might find it uses older Angular patterns like the @RouteConfig decorator on components (common in early Angular 2 versions) instead of the modern route array setup.
• It also leans heavily on route guards (like an AuthGuard) to handle authentication flows, which adds an extra layer of logic that might not be obvious at first glance.

To get up to speed quickly, check these key files:

• Look for a dashboard-routing.module.ts (or similar feature routing file)—this is where most of the project's route definitions live, imported with RouterModule.forChild() instead of forRoot().
• Inspect the app.module.ts to see how routing modules are wired together.
• Dig into any guard services (like auth.guard.ts)—these control access to routes and are a big part of the project's navigation flow.

When you add content to the Sign In Component and get immediately redirected to the dashboard, here are the most likely fixes:

• Premature Auth Guard Trigger: The project's AuthGuard probably checks if a user is "authenticated". If your changes accidentally set a default auth state (like a hardcoded isLoggedIn = true in an auth service), the guard will send you straight to the dashboard. Double-check your auth service for any default values that might be falsifying a logged-in state.
• Unconditional Navigation in ngOnInit: Look at the Sign In Component's ngOnInit() method. If there's code like this.router.navigate(['/dashboard']) running unconditionally, that's the problem. Wrap it in a condition so it only runs after a successful sign-in (like when the user submits the form and their credentials are validated).
• Accidental Form Submission: If you added a form element, make sure any buttons aren't defaulting to type="submit" (which they do if you don't specify type="button"). An accidental form submit could trigger a sign-in request that redirects you right away.
• Misconfigured Default Route: Ensure the Sign In route is defined before any wildcard or default redirect in the routing config. If the default route ('') is set to redirect to /dashboard and the Sign In path isn't prioritized, you'll get redirected even before the component loads properly.

Here's a quick example of fixing an unconditional navigation in the Sign In Component:

ngOnInit(): void {
  // ❌ Remove this if it's present without a condition
  // this.router.navigate(['/dashboard']);

  // ✅ Only navigate after successful sign-in
  this.signInForm.submit.subscribe((credentials) => {
    this.authService.login(credentials).subscribe(() => {
      this.router.navigate(['/dashboard']);
    });
  });
}

内容的提问来源于stack exchange，提问作者Marouen Abdi