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Convert an array to a component in React

In the project there is an array of objects used for populating the breadcrumb:
export const BREADCRUMBS_LIST = [
{ label: 'Home', path: '/', active: false },
{ label: 'Account', path: '/accounts', active: false },
{ label: 'This Account', path: '/accounts', active: true }
];
it is used to populate the list in the Breadcrumbs component:
import { BREADCRUMBS_LIST } from './...'
...
<Breadcrumbs list={BREADCRUMBS_LIST} />
Everything works fine.
The problem appears when we need to translate those labels based on the user's language. For this, we are using react-intl.
So, I transformed the original array into a component of this form:
import { useIntl } from 'react-intl';
export const BreadcrumbsList = () => {
const intl = useIntl();
return [
{ label: intl.formatMessage({ id: 'Home' }), path: '/', active: false },
{
label: intl.formatMessage({ id: 'Account' }),
path: '/accounts',
active: false
},
{
label: intl.formatMessage({ id: 'This Account' }),
path: '/accounts',
active: true
}
];
};
and use it like this:
<Breadcrumbs list={BreadcrumbsList} />
it seems to be wrong because it returns an error saying:
Cannot read property 'map' of undefined.
In that component, the list was used with map: {list.map(({path, label, active}, index) => {...})
Any ideas how to solve this problem?

Your BreadcrumbsList is actually a custom hook, in order to stick with the Rules of Hooks you need to call it on component's level:
// Add "use" prefix as its a custom hook
const useBreadcrumbsList = () => {
const intl = useIntl();
return [
{ label: intl.formatMessage({ id: "Home" }), path: "/", active: false },
{
label: intl.formatMessage({ id: "Account" }),
path: "/accounts",
active: false,
},
{
label: intl.formatMessage({ id: "This Account" }),
path: "/accounts",
active: true,
},
];
};
// Usage
const Component = () => {
const breadcrumbsList = useBreadcrumbsList();
return <Breadcrumbs list={breadcrumbsList} />;
};

hide array of objects based on route variable

I have below array of route objects having structure below, i am trying to hide menu option Construction and all submenu's under that menu option with the bool variable
const libraryRoutes = ({ isAuth }) => ({
title: 'Library',
icon: <BookOutlined />,
homePath: '/library',
children: [
{
.......
},
{ isDevelopmentMode && { // at here i am getting syntax error
type: 'subMenu',
title: 'Construction',
icon: <ReconciliationOutlined />,
children: [
{
path: '/library/construction-material-type',
exact: true,
title: 'Construction Material Type',
icon: <ReconciliationOutlined />,
},
{
path: '/library/construction-set',
exact: true,
title: 'Construction Set',
icon: <ReconciliationOutlined />,
}
]
}},
{
.......
}
]
});
I am getting syntax error as shown in above code, could any one please let me know how to hide based on routes variable

Try wrapping your ternary condition in (). Else you can build your object outside of the returned value as follow :
const libraryRoutes = ({ isAuth }) => {
const routesForDev = () => {
if (!isDevelopmentMode){
return {};
}
return {
type: 'subMenu',
title: 'Construction',
icon: <ReconciliationOutlined />,
children: [
{
path: '/library/construction-material-type',
exact: true,
title: 'Construction Material Type',
icon: <ReconciliationOutlined />,
},
{
path: '/library/construction-set',
exact: true,
title: 'Construction Set',
icon: <ReconciliationOutlined />,
}
]
}
}
return {
title: 'Library',
icon: <BookOutlined />,
homePath: '/library',
children: [
{
.......
},
routesForDev(),
{
.......
}
]
}
};

after login when click hardware back button navigated to login page how to prevent it in ionic 4

const routes: Routes = [
{
path: '',
component: TabsPage,
children: [
//new page add
{
path: 'home',
children: [
{
path: '', loadChildren: () => import('../AllPages/home/home.module').then(m => m.HomePageModule)
},
{
path: 'new-arrival',
children: [
{
path: '',
loadChildren: () => import('../AllPages/new-arrival/new-arrival.module').then(m => m.NewArrivalPageModule)
},
{
path: 'product-item-list',
children: [
{
path: '',
loadChildren: () => import('../Allpages/product-item-list/product-item-list.module').then(m => m.ProductItemListPageModule)
},
{
path: 'product-details',
children: [
{
path: '',
loadChildren: () => import('../Allpages/product-details/product-details.module').then(m => m.ProductDetailsPageModule)
},
]
}
]
}
]
},

Use Ionic NavController instead of Angular Router.
Then, use the navigateRootmethod.
Going root means that all existing pages in the stack will be removed, and the navigated page will become the single page in the stack.
import { NavController } from '#ionic/angular';
...
constructor(private navController: NavController) {}
...
this.navController.navigateRoot('/tabs/home');

How to properly create dictionaries for each record in an api call in JS?

I am trying to create a dictionary for each record returned in an API call.
my broken code:
import lazyLoading from './lazyLoading'
// get records from api call
created() {
axios.get('http://localhost:8080/api/tools/')
.then(response => {
this.json_data = response.data
console.log(this.json_error)
})
.catch(error => {
console.log(error);
})
export default {
name: 'test',
meta: {
icon: 'fa-android',
expanded: false
},
const children = [];
json_data.forEach(item => {
const dict = {
name: item.name,
path: item.path,
meta: {
label: item.label,
link: item.link,
},
component: lazyLoading('testitem/basic'),
}
children.push(dict);
});
}
desired result:
export default {
name: 'test',
meta: {
icon: 'fa-android',
expanded: false
},
children: [
{
name: 'test',
path: 'test',
meta: {
label: 'test',
link: 'test'
},
component: lazyLoading('test/basic')
},
{
name: 'test',
path: 'test',
meta: {
label: 'test',
link: 'test'
},
component: lazyLoading('test/Basic')
},
{
name: 'test',
path: 'test',
meta: {
label: 'test',
link: 'test'
},
component: lazyLoading('test/Basic')
}
]
(obviously 'test' would be replaced what is returned in the api). The main problem is I don't know how to dynamically create the dictionarys. I also have no idea how to view/troubleshoot my axios request. I assumed console.log would spit out the object into the chrome dev tools under console section but I don't see the object there. I'm completely new to javascript so maybe I'm not looking in the correct spot.
Also I'm getting this error:
Module build failed: SyntaxError: 'import' and 'export' may only appear at the top level
So where do I put my api request if I cannot put it at the top?

ES6 get properties from nested objects

i'm doing a project with VueJS, Lodash and Babel, and my problem is that i need to populate a sidebar in my app with routes from a routes.js file. Problem is i don't really know how i can retrieve the data i need.
export default [
{
path: "/admin/login",
name: "admin.login",
component: Login
},
{
path: "/admin",
component: MasterLayout,
meta: { auth: true },
children: [
{
path: "/admin/dashboard",
alias: "/",
menu: { text: "", icon: ""},
name: "admin.dashboard",
component: DashboardIndex
}
]
},
{
path: '/403',
name: 'error.forbidden',
component: ErrorForbidden
},
{
path: "*",
name: 'error.notfound',
component: ErrorPageNotFound
}
];
That is my routes file, i basically need to iterate over each route, check if it has children or a menu property, if it has a menu it gets added to my list of sidebar items, and it's children get added as well with their own menu properties being withdrawn
In the end i'd like to get something like the following
sidebarItems: [
{
name: 'Dashboard',
icon: 'dashboard',
name: 'admin.dashboard'
},
{
name: 'OtherRoute',
icon: 'other-route',
name: 'admin.other-route',
children: [
{
name: 'SubRoute',
icon: 'sub-route',
name: 'admin.sub'
}
]
}
]
This should only account for the routes that contain a menu property.

You basically need iterate recursive over the array, so please try this:
function iterateArrayRoutes(routeArray) {
if(routeArray instanceof Array) {
var routeFormatted = routeArray.reduce(function(last, route){
if (route.hasOwnProperty("menu")) {
var item = {
name: route.name,
icon: route.menu.icon
};
if(route.hasOwnProperty("children") && route.children.length > 0) {
item.children = iterateArrayRoutes(route.children);
}
last.push(item);
}
return last;
}, []);
return routeFormatted;
}
};
Here you have a Demo https://jsfiddle.net/vm1hrwLL/