Jinja variables in hrefs are HTML encoded. Outside of hrefs they're not encoded.

Premailer version 2.5.0.

I have an HTML template with Jinja variables in it. I’d like for these Jinja variables to remain after using premailer, so I can cache the premailed version and do variable substitution in a loop.

For variables in hrefs, like <a href="{{ SURVEY_LINK }}" class="btn-primary">Start Survey</a>

Premailer HTML encodes the braces to their HTML-encoded entities: <a href="%7B%7B%20SURVEY_LINK%20%7D%7D" class="btn-primary"...

Likewise, brackets, [ and ] in href quotes are escaped, which is problematic for my use case as well.

I’d like to use premailer on my Jinja email templates but because of this HTML encoding issue I’m not able to.

[darklow]

@skyler Looks like it is lxml not premailer related issue. See here: http://stackoverflow.com/questions/4684614/is-there-a-way-to-disable-urlencoding-of-anchor-attributes-in-lxml

Until better solution is available, i used simple replace to fix the problem with href="{{ }}". After string has been transformed fix it back:

mapping = (('%7B%7B%20', '{{ '), ('%20%7D%7D', ' }}'))
for k, v in mapping:
    s = s.replace(k, v)

[jdq22]

I ran into this issue as well with SendGrid marketing campaign emails, specifically for [Weblink] and [unsubscribe].

I ended up chaining two .replace().replace() to .transform() to look for the HTML encoded weblink and unsubscribe strings.