The Angular2 Router encounters an issue with the URL when it contains the "&

Ever since updating to the latest version of angular v4.3.2, I've encountered an issue where all my URLs break at the & value. For instance, I have a route /:value from which I need to retrieve the value:

http://localhost:4200/one&two

Instead of directing me to the correct page, it redirects me to:

http://localhost:4200/one

Since the value in the URL is dynamic and can contain &, I'm unable to display the accurate result.

Through the use of a CustomUrlSerializer, I was able to replace %26 with & and successfully navigate through the router within the application. However, during the initial page load, the URL still gets split:

import { UrlSerializer, UrlTree, DefaultUrlSerializer } from '@angular/router';

export class CustomUrlSerializer implements UrlSerializer {

  parse(url: any): UrlTree {
    const dus = new DefaultUrlSerializer();
    return dus.parse(url);
  }

  serialize(tree: UrlTree): any {
    const dus = new DefaultUrlSerializer();
    const path = dus.serialize(tree);
    return path.replace(/%26/g, '&').replace(/%2B/g, '+');
  }

}

Is there a solution to prevent the URL from breaking at &?

Answer №1

If you want to extract a value without splitting it in Angular router, remember that & is used as a special character:

To do so, make sure to remove & from the regex pattern in the following file: node_modules/@angular/router/@angular/router.es5.js

var SEGMENT_RE = /^[^\/()?;=&#]+/;
var QUERY_PARAM_RE =  /^[^=?&#]+/;
var QUERY_PARAM_VALUE_RE = /^[^?&#]+/;

By removing & from the regex pattern, your code should work correctly.

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