Hello everybody!
I’m struggling with lifecycle events used with RouterLink.
I have my app data in a JSON file that renders each item using the url paramenters when the page is loaded. I need buttons to go to the next or previous item and refresh the page content, ie:
- I’m on Item 1 (/lecture/item1) => click next => routerLink(/lecture/item2)
- I’m on Item 1 (/lecture/item1) => click prev => routerLink(/lecture/item0)
That means that each time i move to a page i need to get the params from the url (/lecture/:param
) and update the page data.
The problem i’m facing is that RouterLink isn’t triggering any Page Leaving lifecycle, so my states doesn’t change, also, i can’t clean the states (i can do it through an href param, but the whole app is refreshed).
I found similar threads on this, but some of them are outdated/still opened:
Routerlink bug github.
Is there any way/workaround to reload the component and update the states passing different parameters?
I already tried using useHistory hook, history.replace, and routerDirection=“back” but any of them are triggering ion page leaving hooks. I also tried replacing IonRouterOutlet with Switch but this means not having some important ionic features.
Thank you in advance!!
Here is an extract of code for reference:
lectures.json (Array of objects)
{
"list" : [ {} ]
}
App.tsx
<IonApp>
<IonReactRouter>
<IonSplitPane contentId="main">
<Menu />
<IonRouterOutlet id="main">
<Route path="/" exact>
<Redirect to="/lectures" />
</Route>
<Route path="/lectures" exact component={Home}></Route>
<Route path="/lectures/:name" exact>
<Lecture />
</Route>
</IonRouterOutlet>
</IonSplitPane>
</IonReactRouter>
</IonApp>
Lecture.tsx
const Page: React.FC = () => {
const [lecturaIndex, setLecturaIndex] = useState<number>(0);
const [btnLinks, setBtnLinks] = useState<{next?: string , prev?: string }>({});
useIonViewDidEnter(()=>{
// Gets page params and use them to find current item in data json
let current;
current = languages.list.find(lecture => lecture.title === match.params.name);
setLecturaIndex(current.id);
// Set next and prev buttons url for routerLink
setBtnLinks({
next: current.id < 13 ? `/lectures/${languages.list[current.id+1].title}` : '/lectures',
prev: current.id > 0 ? `/lectures/${languages.list[current.id-1].title}` : '/lectures'
});
// function that Enables/disables navigation buttons depending on current index. ie: if i=0; can't go back
indexCheck(current);
})
// THESE ARE NEVER TRIGGERED WHEN GOING TO NEXT PARAM (/lectures/:param)
useIonViewWillLeave(()=>{
console.log('will leave lecture');
})
useIonViewDidLeave(()=>{
console.log('did leave lecture');
})
return(
<IonPage>
<IonContent>
<IonButton
disabled={nextBtnDisable}
routerLink={btnLinks.next}
routerDirection="back"
>
NEXT
</IonButton>
</IonContent>
</IonPage>
)
}