How to use Ionic Route Guards and Resolver [v4]


With Ionic 4 and the closer Angular integration we can now finally enjoy the benefits from using the Router and other functions you might already know from Angular directly inside our Ionic app.

In this Quick Win we will use Route Guards to protect certain routes of your application and also a Resolver which can perform operations before we actually enter a new page to provide all necessary information upfront.

In the end we will have a dummy app to test our functionality by making requests to the PokeAPI and use the loading and alert controller of Ionic 4!

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Comments on How to use Ionic Route Guards and Resolver [v4]

  1. doncruzic says:

    Argument of type ‘{ content: string; }’ is not assignable to parameter of type ‘LoadingOptions’.
    @ionic/angular: “4.0.0-beta.5”

    1. Simon Grimm says:

      You are right, I just checked and now it’s called “message”! I’ll change it.. Welcome to Ionic Beta versions 😀

  2. Jing Guo says:

    Hi, when I running your code, I got the error: Cannot read property ‘dismiss’ of undefined. Actually the “loading” will be undefined under the .pipe().

    1. Lee Sang Yong says:

      need to modify some code in ‘resolver/dummy-resolve.service.ts’.

      loading.dismiss(); => this.loadingController.dismiss();

      1. Simon Grimm says:

        Thanks Lee, guess they changed it somehow again..

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