I am trying to know if it is possible or not to add the title of an article into the URL after redirecting to a specific article?
An example:
https://www.analyticsinsight.net/top-50-programming-languages-learn-coding/
so I am using reactjs with nodejs and MySQL.
I have a table with their columns, post_Text, post_Title, etc.
I only need to add the title of the article to the URL after User clicks on the title of a specific article.
i have a router as follows.
<Route path="/post/:id" exact>
<Post />
</Route>
and in the post.js file, I have a simple get method.
axios.get(`${server}/posts/byId/${id}`).then((res) => {
setPosts(res.data);
});
i would appreciate your help:_)
a well put question. I asked myself the same. Here is how I did it.
I set up the route, much like you have but with a second route that had another level of depth and another param on the end.
<Route path="/post/:id" exact><Post /></Route>
<Route path="/post/:id/:post_title" exact><Post /></Route>
On the click handler that navigates to the post, I did this. The values passed here. The regex simply identifies white spaces so that they can be replaced with a string.replace method.
const handleReadPost = (post_id, post_title) => {
const urlRegex = /\s/g;
const url_title = post_title.toLowerCase().replace(urlRegex, '-');
navigate(`/posts/${post_id}/${url_title}`);
};
In my case, it then just worked. I didn't need to make any adjustments to my Axios GET or logic in the Post component.
Related
I have a route with dynamic path, using params:
<Route
path="/main/:id"
element={
<Page />
}
/>
When I reach that page, using React Router useLocation, I'm able to get the full path:
"/main/5432gt34"
Is there a way to retrieve the path with the params name instead of the actual path?
(output I'm looking for is:)
"/main/:id"
I'm hoping this might be possible since React Router is aware of the params inside the path and you can extract those with useParams
I don't think react router gives a way to do this but you could do something like this if you're trying to find an easy solution.
<Route
path="/main"
element={
<Page type="index"/>
}
/>
<Route
path="/main/:id"
element={
<Page type="id"/>
}
/>
then handle the type parameter in your page component.
I doubt that it's possible but you can always just pass it as property.
<Route
path="/main/:id"
element={
<Page
path="/main/:id"
/>
}
/>
Aside from that answer for this is here: react-router v6: get path pattern for current route
Yes you can do it by using useParams only if you know the prefix (You're sure that the path starts with "/main" and the rest is dynamic as you mentioned in your question):
let params = useParams();
useEffect(() => {
let dynamicPath = "/main";
Object.keys(params).forEach((key) => {
dynamicPath += `/:${key}`;
});
console.log(dynamicPath);
}, []);
Solution 1: You could pull the id from the string using a regex.
var location = useLocation();
var myRegexp = /main\/(.*)/;
var id = myRegexp.exec(location.pathname)[1];
Little explanation of the regex:
\/ allows us to do match with "main/"
(.*) gives the rest of the match as a second result in returned array.
Once you have the id you can store it a reactContext so that it can be used in any child component.
Solution 2: useRouteLoaderData
This solution would require you to refactor your router so that it one of the data routers but afterwards you should be able to do:
const user = useRouteLoaderData("id");
I am trying to do RBAC(Role-Based Access Control) using react js. I have seen some related question on Stackoverflow but they are not related whith my question. My question is:
There is a user and the user has a role and every role has its own list of menus assigned to it. Each menu has a path and component name.
What I need to do is that when a user sign in Route will be generated dynamically based on his role.
As we know the following is the normal way of defining routes in React. and it is static.
<Switch>
<Route path="/users" component={Users} exact />
<Route path="/items" component={Items} exact />
....
</Switch>
I need to generate every Route dynamically. This is what I have tried,
menus=[
{
name:"Users"
url:"/users"
component:"Users"
},
{
name:"Items"
url:"/items"
component:"Items"
}
]
<Switch>
{
menus.map(menu =>{
return(<Route path={menu.url} component={menu.component} exact/>)
})
}
</Switch>
But this is not working for me. When I try to navigate to /users it can't find the route. But when I use the first method it works correctly. Can you please tell me whats wrong with my code??
Here is a sample code that describes my problem
Here is a sandbox link
You are passing the component as a string to Route, you need to remove the quotes around them in your menu array.
menus=[
{
name:"Users"
url:"/users"
component:Users
},
{
name:"Items"
url:"/items"
component:Items
}
]
If your menu is dynamic from a DB and they are strings, then you will need to make sure the component is imported into the file, and then map it with an object like so:
import {Users} from './Users';
// assuming this is what menu will return as
const menus=[
{
name:"Users"
url:"/users"
component:"Users"
},
{
name:"Items"
url:"/items"
component:"Items"
}
]
const keyMap = {
Users: Users // mapping 'Users' string to <Users/> component
}
return (<Route path={menu.url} component={keyMap[menu.component]} exact/>)
Solution demonstration is available here
Using react-router 4.2.2
Following the documentation at https://github.com/ReactTraining/react-router/blob/master/packages/react-router/docs/api/MemoryRouter.md (Which is lacking a good example)
I have the following
<MemoryRouter
initialEntries={[
'/one',
'/two'
]}>
<div>
<Route path="/one" component={FirstPage} />
<Route path="/two" component={SecondPage} />
</div>
</MemoryRouter>
I can then use the following to easily navigate pages:
this.props.history.push('/two');
This works as intended. However, when I hit my browsers back button it does not take me back to the previous route.
While I could easily have navigation buttons on screen, I would love for the browsers back button to work as well. Can memory router do this? If so, how?
My understanding is that Memory Router specifically doesn't write anything to the browser's history, and as such you would need to handle this manually. One thing you can do is add an event listener:
componentDidMount() {
window.onpopstate = this.handleNavigation.bind(this);
}
handleNavigation(event) {
if (//event is going back) {
this.props.history.go(-1); // Or .goBack() if available, or whatever the equivalent is. Possibly will need to keep track of currentLocation in relation to an array and navigate that way.
} else if (//If event is going forward) {
this.props.history.go(1); // Or .goForward() if available
}
}
Lets say we have two components for Post and Project. Each post and project has slug. I want to access post and projects by slug. So we have routes:
<Route path="/:post_slug" component={PostComponent} />
<Route path="/:project_slug" component={ProjectComponent} />
And for example when you visit some post pr project, an action gets called to fetch its data by params. Something like this:
this.props.fetchPost(this.props.match.params.post_slug)
this.props.fetchProject(this.props.match.params.project_slug)
If I do only one component accessible by slug only, then it works. But if I want to access two different components by slug, then it's messed up. And i.e. when I visit post, react thinks that I'm visiting project.
Maybe there is some way to handle such case in react-router-dom?
There is no way to do this, since the router can't differentiate between the two routes. For example, if I were to navigate to site.com/my_slug, the router wouldn't know whether my_slug is supposed to be a :post_slug or a :project_slug. It's sending you to a project when they're both present because it interprets them to be the same route and so it uses the last one you define.
An alternative you could try is being a bit more explicit with your routes, like so:
<Route path="/post/:post_slug" component={PostComponent} />
<Route path="/project/:project_slug" component={ProjectComponent} />
You could do this if you put the detection logic in another component, like this:
<Route path="/:any_slug" component={AnyComponent} />
Then let that component figure out what type of ID you have and render the desired sub-component accordingly:
const AnyComponent = props => {
if (slugIsProject(props.match.params.any_slug)) {
return <ProjectComponent id={props.match.params.any_slug} />;
} else {
return <PostComponent id={props.match.params.any_slug} />;
}
}
This way the router always renders the same component (AnyComponent) but that component appears differently depending on what the ID is determined to be.
Is it possible to have routes with different parameters and render different components based on the parameters?
For an example can I do:
<Route path="/SamePath/:param1" component={Component1} />
<Route path="/SamePath/:param2" component={Component2} />
If you are trying to have a the same route structure but render different components based on the value of the param, then you could try using render to decide which component to render based on the value of the param:
<Route path="/SamePath/:param1" render={ (props) => {
if (props.match.params.param1 == 'something') {
return <Component1 { ...props } />
} else {
return <Component2 { ...props } />
}
} />
If it is for lets say only two routes that will differ instead of using the capturing : just type in the name Eg.( samePath/organges samePath/apples) of the route if thats not the case and you want to capture a variarty range of to render differnt components you could use the regex routes feature of react router 4.. but that is much more complicated
In my project, I created a dictionary mapping possible values of the parameter to the desired component, and created <Route>s based on this dictionary.
<Switch>{
[{
['param1']: Component1,
['param2']: Component2,
}].forEach((component, param) =>
<Route
component={component}
exact
path={`/path/with/${param}`}
/>
)
}</Switch>
This will produces individual <Route>s for each path variation you wish to match. It will render different components for each route and, to me, seems in keeping with React-Router v4's dynamic routing ethos.
I encountered a problem: I couldn't access the value of the param via the match property passed to the rendered child. The Route matches against a specific path string (e.g. '/path/with/paramValue1) and not against a route descriptor with a parameter (e.g. '/path/with/:param'). This means thematch.params` dictionary passed to the child will not contain any keys or values. If you don't need the params in your child, this method will work fine. I wanted to inspect the param in the child so I had to look for a different method.