Oh, I think I see what you're getting at. Note the documentation for url_with:

Does the same as "url_for", but inherits query parameters from the current request.

<update> Expanded url_for vs. url_with examples. </update>

#!/usr/bin/env perl
use Mojolicious::Lite -signatures;

get '/' => sub ($c) {
    if ( !$c->param('foo') )
        { $c->redirect_to( $c->url_for('index')->query(foo=>"bar") ) }
    else { $c->render('index') }
} => 'index';

app->start;

__DATA__

@@ index.html.ep
% layout 'main', title => 'Hello, World!';
<pre>
%=  url_for('/')
%=  url_for('/')->to_abs
%=  url_for('/')->to_abs->query(abc=>"xyz")
%= url_with('/')
%= url_with('/')->to_abs
%= url_with('/')->to_abs->query(abc=>"xyz")
</pre>

@@ layouts/main.html.ep
<!DOCTYPE html>
<html>
<head><title><%= title %></title></head>
<body><main>
<%= content %>
</main></body>
</html>

[download]

Visiting http://localhost:3000/ results in a single redirect (to add the query for demonstration purposes), and then renders as:

/
http://localhost:3000/
http://localhost:3000/?abc=xyz
/?foo=bar
http://localhost:3000/?foo=bar
http://localhost:3000/?abc=xyz

[download]

Also, note the link_to helper: %= link_to Reload => url_with('/')->to_abs results in <a href="http://localhost:3000/?foo=bar">Reload</a>

In reply to Re^3: Mojolicious absolute url with query in template? (updated) by haukex
in thread Mojolicious absolute url with query in template? by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.