Update to https://djangosnippets.org/snippets/1907/ to be a bit more flexible, and code cleaned up a tiny bit.
To use, add this snippet as a file in a templatetags folder in an app or in a project. Then include and call the tag with
{% obfuscate_email 'email' %} or {% obfuscate_email 'email' 'link_text' %}
if 'link_text' is provided, it will be used as the text in the body of the <a> tag. If not, then the email will be used.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | from django import template
register = template.Library()
class ObfuscateEmail(template.Node):
def __init__(self, email, link_body=None):
self.email = template.Variable(email)
try:
self.link_body = template.Variable(link_body)
except (template.VariableDoesNotExist, TypeError):
self.link_body = None
def render(self, context):
import random
email_address = str(self.email)
character_set = '+-.0123456789@ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz'
char_list = list(character_set)
random.shuffle(char_list)
key = ''.join(char_list)
cipher_text = ''
id = 'e' + str(random.randrange(1,999999999))
for a in email_address:
cipher_text += key[ character_set.find(a) ]
script = 'var a="{}";var b=a.split("").sort().join("");var c="{}";var d="";' \
'for(var e=0;e<c.length;e++)d+=b.charAt(a.indexOf(c.charAt(e)));' \
'document.getElementById("{}").innerHTML="<a href=\\"mailto:"+d+"\\">"+{}+"</a>"'.format(key, cipher_text, id, self.link_body or 'd')
script = "eval(\""+ script.replace("\\","\\\\").replace('"','\\"') + "\")"
script = '<script type="text/javascript">/*<![CDATA[*/'+script+'/*]]>*/</script>'
return '<span id="{}">[javascript protected email address]</span>{}'.format(id, script)
@register.tag
def obfuscate_email(parser, token):
"""
{% obfuscate_email user.email %}
"""
bits = token.split_contents()
"""
Pass all of the arguments defined in the template tag except the first one,
which will be the name of the template tag itself.
Example: {% do_whatever arg1 arg2 arg3 %}
*bits[1:] would be: [arg1, arg2, arg3]
"""
if len(bits) not in (2, 3):
raise template.TemplateSyntaxError("{} accepts one or two arguments: 1) (required) email 2) (optional) <a> tag body ")
return ObfuscateEmail(*bits[1:])
|
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