title: Passing values through React-Router v4 <Link />
body: <p>Question: How can I pass a prop or a single value, like an _id, through React-Router's Link component, and catch it at the endpoint?</p>
  
  <p>This is what I mean: Let's say we are on page /a. The Link will take the user to /b. As such <code>&lt;Link to='/b'&gt;</code>. Now, I need to pass an _id through the Link, from /a, to /b.</p>
  
  <pre><code>&lt;Link to='/b' params={_id}&gt;blah blah&lt;/Link&gt;
  </code></pre>
  
  <p>The id I'm trying to pass is the property of an object in which the Link component is nested in. </p>
  
  <p>I found this syntax <code>params={}</code> in another StackOverflow thread. My code compiled without breaking, so that probably means it worked? However, I'm not sure about how to retrieve this passed value at the endpoint.</p>
  
  <p>Any help will be greatly appreciated.</p>