How to Pass Props in React-Router\'s \'Link\' Component?

Pass Props in React-Router's "Link"

When using React with React-Router, you can pass properties to a new view using a modified syntax in the component.

Updated Syntax in React-Router v4 and v5

To pass props in React-Router v4 and v5, use the following syntax:

<link to="{{" pathname: path query: queryobject search: searchstring>
  ...

where:

• pathname is the path to the new view.
• query is an object containing query parameters.
• search is a string representing the query string, such as ?foo=bar.

Accessing Props in the Destination Component

In the destination component, you can access the props passed via the Link by using the following techniques:

Out-dated usage of withRouter higher order component:

• Wrap the destination component with withRouter, which provides access to the match and location props:

const NewView = withRouter(OriginalView);

Current implementation using hooks:

• Use the useParams and useLocation hooks within the functional component to access the match and location props:

const NewView = () => {
  const { testvalue } = useParams();
  const { query, search } = useLocation();

  return (
    <div>
      {testvalue} {query.backUrl}
    </div>
  );
};

Example

Consider the following example:

App.js:

<link to="{{" pathname: query: testvalue:>Create Idea

CreateIdeaView.js:

const CreateIdeaView = () => {
  const { testvalue } = useParams();
  console.log(testvalue); // prints 'hello'

  return (
    <div>{testvalue}</div>
  );
};

In this example, clicking the "Create Idea" link passes the property testvalue with the value hello to the CreateIdeaView component.

Note:

• The path in the Link component should include the parameter placeholder, e.g. path: '/ideas/:testvalue'.
• The useParams hook returns an object with all the parameters defined in the path.
• The useLocation hook returns an object with information about the current location, including query and search.
• The query is an object containing key-value pairs, while the search string contains the entire query string.

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