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cavemanon-wagtail-personali…/src/personalisation/wagtail_hooks.py
2016-12-22 14:25:00 +01:00

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Python

from __future__ import absolute_import, unicode_literals
import logging
import time
from django.conf.urls import include, url
from django.shortcuts import reverse
from django.utils.safestring import mark_safe
from django.utils.translation import ugettext_lazy as _
from wagtail.contrib.modeladmin.options import ModelAdmin, modeladmin_register
from wagtail.wagtailadmin.widgets import (
Button, ButtonWithDropdownFromHook)
from wagtail.wagtailcore import hooks
from personalisation import admin_urls
from personalisation.models import (AbstractBaseRule, PersonalisablePage,
Segment)
from personalisation.utils import impersonate_other_page
logger = logging.getLogger()
@hooks.register('register_admin_urls')
def register_admin_urls():
"""Adds the administration urls for the personalisation apps."""
return [
url(r'^personalisation/', include(
admin_urls,
app_name='personalisation',
namespace='personalisation')),
]
class SegmentModelAdmin(ModelAdmin):
"""The base model for the Segments administration interface."""
model = Segment
menu_icon = 'group'
add_to_settings_menu = False
list_display = ('status', 'name', 'create_date', 'edit_date')
index_view_extra_css = ['personalisation/segment/index.css']
form_view_extra_css = ['personalisation/segment/form.css']
modeladmin_register(SegmentModelAdmin)
@hooks.register('before_serve_page')
def set_visit_count(page, request, serve_args, serve_kwargs):
if 'visit_count' not in request.session:
request.session['visit_count'] = []
# Update the page visit count
def create_new_counter(page, request):
"""Create a new counter dict and place it in session storage."""
countdict = {
"slug": page.slug,
"id": page.pk,
"path": request.path,
"count": 1,
}
request.session['visit_count'].append(countdict)
if len(request.session['visit_count']) > 0:
for index, counter in enumerate(request.session['visit_count']):
if counter['id'] == page.pk:
# Counter already exists. Increase the count value by 1.
newcount = counter['count'] + 1
request.session['visit_count'][index]['count'] = newcount
request.session.modified = True
else:
# Counter doesn't exist.
# Create a new counter with count value 1.
create_new_counter(page, request)
else:
# No counters exist. Create a new counter with count value 1.
create_new_counter(page, request)
@hooks.register('before_serve_page')
def segment_user(page, request, serve_args, serve_kwargs):
if 'segments' not in request.session:
request.session['segments'] = []
current_segments = request.session['segments']
persistent_segments = Segment.objects.filter(persistent=True)
current_segments = [item for item in current_segments if any(seg.pk for seg in persistent_segments) == item['id']]
request.session['segments'] = current_segments
segments = Segment.objects.all().filter(status='enabled')
for segment in segments:
rules = AbstractBaseRule.__subclasses__()
segment_rules = []
for rule in rules:
queried_rules = rule.objects.filter(segment=segment)
for result in queried_rules:
segment_rules.append(result)
result = _test_rules(segment_rules, request, segment.match_any)
if result:
_add_segment_to_user(segment, request)
if request.session['segments']:
logger.info("User has been added to the following segments: {}"
.format(request.session['segments']))
for seg in request.session['segments']:
segment = Segment.objects.get(pk=seg['id'])
segment.visit_count = segment.visit_count + 1
segment.save()
def _test_rules(rules, request, match_any=False):
"""Test whether the user matches a segment's rules'"""
if len(rules) > 0:
for rule in rules:
result = rule.test_user(request)
if match_any:
if result is True:
return result
elif result is False:
return False
if not match_any:
return True
return False
def _add_segment_to_user(segment, request):
"""Save the segment in the user session"""
def check_if_segmented(segment):
"""Check if the user has been segmented"""
for seg in request.session['segments']:
if seg['encoded_name'] == segment.encoded_name():
return True
return False
if not check_if_segmented(segment):
segdict = {
"encoded_name": segment.encoded_name(),
"id": segment.pk,
"timestamp": int(time.time()),
"persistent": segment.persistent,
}
request.session['segments'].append(segdict)
@hooks.register('before_serve_page')
def serve_variation(page, request, serve_args, serve_kwargs):
user_segments = []
for segment in request.session['segments']:
try:
user_segment = Segment.objects.get(pk=segment['id'],
status='enabled')
except Segment.DoesNotExist:
user_segment = None
if user_segment:
user_segments.append(user_segment)
if len(user_segments) > 0:
variations = _check_for_variations(user_segments, page)
if variations:
variation = variations[0]
impersonate_other_page(variation, page)
return variation.serve(request, *serve_args, **serve_kwargs)
def _check_for_variations(segments, page):
for segment in segments:
page_class = page.__class__
if not any(item == PersonalisablePage for item in page_class.__bases__):
page_class = PersonalisablePage
variation = page_class.objects.filter(
canonical_page=page, segment=segment)
if variation:
return variation
return None
@hooks.register('register_page_listing_buttons')
def page_listing_variant_buttons(page, page_perms, is_parent=False):
personalisable_page = PersonalisablePage.objects.filter(pk=page.pk)
segments = Segment.objects.all()
if personalisable_page and len(segments) > 0 and not (any(item.segment for item in personalisable_page)):
yield ButtonWithDropdownFromHook(
_('Variants'),
hook_name='register_page_listing_variant_buttons',
page=page,
page_perms=page_perms,
is_parent=is_parent,
attrs={'target': '_blank', 'title': _('Create a new variant')}, priority=100)
@hooks.register('register_page_listing_variant_buttons')
def page_listing_more_buttons(page, page_perms, is_parent=False):
segments = Segment.objects.all()
available_segments = [item for item in segments if not PersonalisablePage.objects.filter(segment=item, pk=page.pk)]
for segment in available_segments:
yield Button(segment.name,
reverse('segment:copy_page', args=[page.id, segment.id]),
attrs={"title": _('Create this variant')})
class SegmentSummaryPanel(object):
order = 500
def render(self):
segment_count = Segment.objects.count()
target_url = reverse('personalisation_segment_modeladmin_index')
title = _("Segments")
return mark_safe("""
<li class="icon icon-group">
<a href="{}"><span>{}</span>{}</a>
</li>""".format(target_url, segment_count, title))
@hooks.register('construct_homepage_summary_items')
def add_segment_summary_panel(request, summary_items):
return summary_items.append(SegmentSummaryPanel())