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annotate core/functions.py @ 852:e4caec331308

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Add link on sidebar to Alex Faide guitar instructor thread.
author Brian Neal <bgneal@gmail.com>
date Wed, 05 Nov 2014 19:18:23 -0600
parents 97f8fab9b1a3
children 79a71b9d0a2a
rev   line source
bgneal@700 1 """This file houses various core utility functions"""
bgneal@700 2 from contextlib import contextmanager
bgneal@176 3 import datetime
bgneal@700 4 import logging
bgneal@700 5 import os
bgneal@227 6 import re
gremmie@1 7
gremmie@1 8 from django.contrib.sites.models import Site
gremmie@1 9 from django.conf import settings
bgneal@522 10 import django.core.mail
gremmie@1 11
bgneal@513 12 import core.tasks
bgneal@181 13
gremmie@1 14
bgneal@700 15 @contextmanager
bgneal@700 16 def temp_open(path, mode):
bgneal@700 17 """A context manager for closing and removing temporary files."""
bgneal@700 18 fp = open(path, mode)
bgneal@700 19 try:
bgneal@700 20 yield fp
bgneal@700 21 finally:
bgneal@700 22 fp.close()
bgneal@700 23 os.remove(path)
bgneal@700 24
bgneal@700 25
bgneal@522 26 def send_mail(subject, message, from_email, recipient_list, defer=True, **kwargs):
gremmie@1 27 """
bgneal@513 28 The main send email function. Use this function to send email from the
bgneal@513 29 site. All applications should use this function instead of calling
bgneal@513 30 Django's directly.
bgneal@522 31 If defer is True, the email will be sent to a Celery task to actually send
bgneal@522 32 the email. Otherwise it is sent on the caller's thread. In any event, the
bgneal@513 33 email will be logged at the DEBUG level.
bgneal@513 34
bgneal@513 35 """
bgneal@513 36 # Guard against empty email addresses
bgneal@418 37 recipient_list = [dest for dest in recipient_list if dest]
bgneal@418 38 if not recipient_list:
bgneal@418 39 logging.warning("Empty recipient_list in send_mail")
bgneal@418 40 return
gremmie@1 41
bgneal@316 42 logging.debug('EMAIL:\nFrom: %s\nTo: %s\nSubject: %s\nMessage:\n%s',
bgneal@316 43 from_email, str(recipient_list), subject, message)
gremmie@1 44
bgneal@522 45 if defer:
bgneal@513 46 core.tasks.send_mail.delay(subject, message, from_email, recipient_list,
bgneal@513 47 **kwargs)
bgneal@522 48 else:
bgneal@522 49 django.core.mail.send_mail(subject, message, from_email, recipient_list,
bgneal@522 50 **kwargs)
bgneal@513 51
gremmie@1 52
gremmie@1 53 def email_admins(subject, message):
gremmie@1 54 """Emails the site admins. Goes through the site send_mail function."""
gremmie@1 55 site = Site.objects.get_current()
gremmie@1 56 subject = '[%s] %s' % (site.name, subject)
bgneal@316 57 send_mail(subject,
bgneal@316 58 message,
gremmie@1 59 '%s@%s' % (settings.GPP_NO_REPLY_EMAIL, site.domain),
gremmie@1 60 [mail_tuple[1] for mail_tuple in settings.ADMINS])
gremmie@1 61
gremmie@1 62
gremmie@1 63 def email_managers(subject, message):
gremmie@1 64 """Emails the site managers. Goes through the site send_mail function."""
gremmie@1 65 site = Site.objects.get_current()
gremmie@1 66 subject = '[%s] %s' % (site.name, subject)
bgneal@316 67 send_mail(subject,
bgneal@700 68 message,
gremmie@1 69 '%s@%s' % (settings.GPP_NO_REPLY_EMAIL, site.domain),
gremmie@1 70 [mail_tuple[1] for mail_tuple in settings.MANAGERS])
gremmie@1 71
gremmie@1 72
gremmie@1 73 def get_full_name(user):
gremmie@1 74 """Returns the user's full name if available, otherwise falls back
gremmie@1 75 to the username."""
gremmie@1 76 full_name = user.get_full_name()
gremmie@1 77 if full_name:
gremmie@1 78 return full_name
gremmie@1 79 return user.username
bgneal@9 80
bgneal@176 81
bgneal@176 82 BASE_YEAR = 2010
bgneal@176 83
bgneal@176 84 def copyright_str():
bgneal@176 85 curr_year = datetime.datetime.now().year
bgneal@176 86 if curr_year == BASE_YEAR:
bgneal@176 87 year_range = str(BASE_YEAR)
bgneal@176 88 else:
bgneal@176 89 year_range = "%d - %d" % (BASE_YEAR, curr_year)
bgneal@176 90
bgneal@176 91 return 'Copyright (C) %s, SurfGuitar101.com' % year_range
bgneal@227 92
bgneal@227 93
bgneal@227 94 IP_PAT = re.compile('(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})')
bgneal@227 95
bgneal@227 96 def get_ip(request):
bgneal@227 97 """Returns the IP from the request or None if it cannot be retrieved."""
bgneal@227 98 ip = request.META.get('HTTP_X_FORWARDED_FOR',
bgneal@227 99 request.META.get('REMOTE_ADDR'))
bgneal@227 100
bgneal@227 101 if ip:
bgneal@227 102 match = IP_PAT.match(ip)
bgneal@227 103 ip = match.group(1) if match else None
bgneal@227 104
bgneal@227 105 return ip
bgneal@241 106
bgneal@241 107
bgneal@241 108 def get_page(qdict):
bgneal@241 109 """Attempts to retrieve the value for "page" from the given query dict and
bgneal@241 110 return it as an integer. If the key cannot be found or converted to an
bgneal@241 111 integer, 1 is returned.
bgneal@241 112 """
bgneal@241 113 n = qdict.get('page', 1)
bgneal@241 114 try:
bgneal@241 115 n = int(n)
bgneal@241 116 except ValueError:
bgneal@241 117 n = 1
bgneal@241 118 return n
bgneal@566 119
bgneal@566 120
bgneal@566 121 def quote_message(who, message):
bgneal@566 122 """
bgneal@566 123 Builds a message reply by quoting the existing message in a
bgneal@566 124 typical email-like fashion. The quoting is compatible with Markdown.
bgneal@566 125 """
bgneal@816 126 msg = "> %s" % message.rstrip().replace('\n', '\n> ')
bgneal@566 127 if msg.endswith('\n> '):
bgneal@566 128 msg = msg[:-2]
bgneal@566 129
bgneal@566 130 return "*%s wrote:*\n\n%s\n\n" % (who, msg)