React router history state

React router history state DEFAULT

How to pass params with history.push/Link/Redirect in react-router v4?

First of all, you need not do as this in refers to the context of the callback itself which since you are using arrow function refers to the React component context.

According to the docs:

history objects typically have the following properties and methods:

  • length - (number) The number of entries in the history stack
  • action - (string) The current action (PUSH, REPLACE, or POP)
  • location - (object) The current location. May have the following properties:

    • pathname - (string) The path of the URL
    • search - (string) The URL query string
    • hash - (string) The URL hash fragment
    • state - (string) location-specific state that was provided to e.g. push(path, state) when this location was pushed onto the stack. Only available in browser and memory history.
  • push(path, [state]) - (function) Pushes a new entry onto the history stack
  • replace(path, [state]) - (function) Replaces the current entry on the history stack
  • go(n) - (function) Moves the pointer in the history stack by n entries
  • goBack() - (function) Equivalent to go(-1)
  • goForward() - (function) Equivalent to go(1)
  • block(prompt) - (function) Prevents navigation

So while navigating you can pass props to the history object like

or similarly for the component or the component

and then in the component which is rendered with route, you can access the props passed like

Also keep in mind that, when using history or location objects from props you need to connect the component with .

As per the Docs:

withRouter

You can get access to the history object’s properties and the closest match via the higher-order component. will re-render its component every time the route changes with the same props as render .

Sours: https://stackoverflow.com/questions/44121069/how-to-pass-params-with-history-push-link-redirect-in-react-router-v4

Best JavaScript code snippets using react-router.RouteComponentProps.history(Showing top 6 results out of 315)

function App(props) { const user = getCurrentUser() const isLoggedin = user ? true : false; return ( <React.Fragment> <Header user={user} /> <Switch> <Route path="/login" render={(props) => <LoginPage {...props} history={props.history} isLoggedin={isLoggedin}/>}></Route> <Route path="/logout" component={Logout} /> <Route path="/home" component={ProtectedRoute(HomePage, isLoggedin)} /> <Route path="/sources" component={ProtectedRoute(SourcesPage, isLoggedin)} /> <Route path="/not-found" component={ProtectedRoute(NotFoundPage, isLoggedin)} /> <Redirect from="/" exact to="/home" /> <Redirect to="/not-found" /> </Switch> </React.Fragment> ); }
elsereturn renderProps(component || children || render, props); } else { const { state } = props.history.location; const newLocation = { pathname: redirectTo,
render() { const { previousLocation, data } = this.state; const { location } = this.props; const initialData = this.prefetcherCache[location.pathname] || data; return ( <RouteTransitioner location={location}> <Switch location={location}> {this.props.routes.map((r, i) => ( <Route key={`route--${i}`} path={r.path} exact={r.exact} location={previousLocation || location} render={(props) => React.createElement(r.component, { ...initialData, history: props.history, location: previousLocation || location, match: props.match, prefetch: this.prefetch, }) } /> ))} </Switch> </RouteTransitioner> ); }
() => { setState({food: '', drink: ''}) props.history.push('/success') }, error => { props.history.push('/error', {state: {error}}) },
user={this.state.user} chatrooms={this.state.chatrooms} onChangeUser={() => props.history.push('/user')} onEnterChatroom={ chatroomName => this.onEnterChatroom( chatroomName, () => props.history.push('/user'), chatHistory => props.history.push({ pathname: chatroomName, state: { chatHistory } render={ (props) => { const toHome = () => props.history.push('/') returnthis.renderUserSelectionOrRedirect(() => ( <UserSelection
user={this.state.user} chatrooms={this.state.chatrooms} onChangeUser={() => props.history.push('/user')} addChatRoom={() => this.addChatroom() } ref={(newRoom) => {this.newRoom = newRoom }} chatroomName => this.onEnterChatroom( chatroomName, () => props.history.push('/user'), chatHistory => props.history.push({ pathname: chatroomName, state: { chatHistory } render={ (props) => { const toHome = () => props.history.push('/') returnthis.renderUserSelectionOrRedirect(() => ( <UserSelection
Sours: https://www.tabnine.com/code/javascript/functions/react-router/RouteComponentProps/history
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Programmatically Navigate with React Router

Programmatic navigation refers to when a user is redirected as a result of an action that occurs on a route, like a login or signup action. In this article, we'll look at a myriad of approaches to navigating programmatically with React Router.

The React ideology consists of three core concepts: the user event, state management and render function. Programmatic routing can be said to be in line with this ideology.

The effect of routing programmatically is on the same page as no route changing or, at other times, may bring about a need to change a route. When the need arises, it is not going to be triggered by clicking a link, so we don’t always have to use a Link component, and using a Link component in such scenarios is not optimal.

Sometimes we want a different action: We only want to navigate to a different route when a particular event happens or when a user performs an action like submitting a form that leads you to a new page. We refer to this kind of action as programmatic navigation.

React Router is designed to follow the ideology as mentioned earlier. Thus, programmatically navigating with React Router should, by definition, align with those three core concepts.

React Router provides us with a history object, which is accessible by passing this object into each route as a prop. This history object lets us manually control the history of the browser. Since React Router changes what we see based on the current URL, the history object gives us fine-grained control over when or where individual pieces of the application are shown.

What is Programmatic Navigation?

Programmatic Navigation refers to when a user is redirected as a result of an action that occurs on a route. A login or signup action or form submission action on a route is a typical example of navigating programmatically. In this article, we’ll look at a myriad of approaches to navigating programmatically with React Router.

Using Redirect Component

The primary way you programmatically navigate using React Router v4+ is by using a component, and it’s a recommended method that helps the user navigate between routes.

Using the Redirect component is a different approach but just as valid. The idea is to have it pointing at a state in the component, and if that condition is fulfilled, then navigate.

Some might argue that this method requires more work as one needs to create a new prop on the component’s state and add a condition to the render method to check when to render the Redirect component. This is a fact, but a counter and valid argument, from those who prefer explicit to implicit: It points to the idea that explicitly defining and modifying your state is better as it makes the code more readable against the implicit state handled by an imperative API such as , which we will go over in a bit.

Here’s a code example of how to use the Redirect component.

Codesandbox: https://codesandbox.io/s/gallant-meitner-bshng?file=/src/App.js

Using history.push() Method

history.push() is another approach where we make use of the props React Router provides while rendering a component.

In other words, this works when the component is being rendered by React Router, bypassing the component as a Component prop to a Route. If this is the case, the React Router exposes three props to the component: , and .

We’ll focus on the prop. The history prop keeps track of all the session history under the hood and provides us with different methods to manipulate it.

The method is essential and is used to push a path as a route to the history stack, which executes as Last In First Out (LIFO). This causes the app to redirect to the last route added, thereby redirecting the user to a specified route. The example below assumes the component is rendered with React Router.

Codesandbox: https://codesandbox.io/s/angry-saha-djh3z?file=/src/App.js

Using withRouter Method

We mentioned earlier that for a component to have access it must have been rendered with React Router. There are cases where this might not be the case. Thus, we render a component ourselves. To make the property available to the component, the React Router team created the Higher Order Component (HOC) withRouter. Wrapping a component with this HOC exposes the properties as well.

Codesandbox: https://codesandbox.io/s/silent-rain-l19lg?file=/src/App.js:0-442

Using useHistory Hook

As of recent versions of React Router (v5.1) and React (v16.8), we have a new method called the useHistory hook which embraces the power of React Hooks. This is used for programmatic navigation purposes within a functional component. The useHistory hook gives you access to the history instance that we can use to navigate between pages, whether the component has been rendered by React Router or not, and this eliminates the need for using withRouter.

Codesandbox: https://codesandbox.io/s/serene-cookies-hc629?file=/src/App.js

Conclusion

The main focus of this article was to share how you can safely navigate between components using the React Router package.

Considering React has a declarative approach to building UIs, using Redirect is the recommended approach for navigation when the Link cannot be used. There is no harm in using the other methods as they are all supported and semantically correct.

Also, with the introduction of useHistory together other other APIs in the 5.1.2 release, it becomes even easier to navigate programmatically as long as you understand how to use React Hooks.


JavaScript, react, routing, Tutorial, web development

Sours: https://www.telerik.com/blogs/programmatically-navigate-with-react-router
Protected Routes in React using React Router

react-router: useHistory, useLocation and useParams

Introduction

I expect that you have read my previous blog, so you already know what is the three route props. If you don't know about it, check my previous blog here. I discuss how we can pass the three route props, and I want to show you another easy way to access it without thinking to pass as props.

useHistory

Basically, this hook gives you access to objects and you have access to several functions to navigate your page. It's all about navigation. This is how you can use .

What's inside history?

history object

Okay... so many things here. I know it is confusing in the beginning. I will explain the most common uses of these attributes.

  • length(number): the length of the page that you visited.
  • action(string): (POP, PUSH, REPLACE)
    • POP: Visiting the route via url, Using history go function(, , )
    • PUSH: Using
    • REPLACE: using
  • .push(pathname: string, state: any)/(location: object): push a path or location to the history stack. There are several ways to use push, and I show the examples below.

I have never utilized the state before. However, after I read the documentation, the documentation gave me an idea. For example, if you want to know where the user came from, you can utilize the state.

  • .replace(pathname: string, state: any)/(location: object): this is basically similar to push, but it will remove the existing history and update to the new one. Whenever the user clicks back in the browser after , it will not go back to the previous one.
  • .goBack(): move back to the previous history.
  • .goForward(): move forward to the previous history.
  • .go(delta: number): move to a different index and can specify how many indexes from this position (can be minus or positive)

I have never used the three go function, but I just want to let you know that this function has existed in history

I also prepare codesandbox to help you understand.

useLocation

Briefly, this is like a state that always returns your current URL. If the URL is changed, the useLocation will be updated as well.

What's inside location?

uselocation

useLocation doesn't have any function like useHistory, and it is just to grab information about your current URL.

I will use the previous link that we tried to use from history in the example .

from that URL, if we are trying to call useLocation, we will get this object.

uselocation2

Just keep in mind the purpose is getting information from the current route, and it will return these attributes.

useParams

This is the easiest hook from react-router to understand. Whenever you call this hook you will get an object that stores all the parameters as attributes.

You just need this line of code and you can have access to your params.

you can play around in my CodeSandBox

Conclusion

I hope this post could help you to understand the three main useful hooks from react-router. It is confusing in the beginning, but after I play around with it, everything makes sense and understandable. Enjoy playing react-router! post your comments to ask me questions.

Sours: https://dev.to/raaynaldo/react-router-usehistory-uselocation-and-useparams-10cd

State history react router

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Rotas com React Router Dom (fácil demais)

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