Move google maps creation to template tag and add parameters

docs/utils.templatetags.rst

@@ -9,6 +9,14 @@ utils.templatetags package
 Submodules
 ----------
 
+utils.templatetags.google\_map\_url module
+------------------------------------------
+
+.. automodule:: utils.templatetags.google_map_url
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
 utils.templatetags.thumbnail module
 -----------------------------------
 

website/events/services.py

-import hmac
-from hashlib import sha1
-from base64 import urlsafe_b64decode, urlsafe_b64encode
 from collections import OrderedDict
 
-from django.template.defaultfilters import urlencode
 from django.utils import timezone
 from django.utils.translation import ugettext_lazy as _, get_language
 
 from events import emails
 from events.exceptions import RegistrationError
 from events.models import Registration, RegistrationInformationField
-from django.conf import settings
 
 
 def is_user_registered(member, event):
@@ -237,21 +232,3 @@ def registration_fields(member, event):
     else:
         raise RegistrationError(
             _("You are not allowed to update this registration."))
-
-
-def create_google_maps_url(event):
-    maps_url = (f"/maps/api/staticmap?"
-                f"center={ urlencode(event.map_location) }&"
-                f"zoom=13&size=450x250&"
-                f"markers={ urlencode(event.map_location) }&"
-                f"key={ settings.GOOGLE_MAPS_API_KEY }")
-
-    decoded_key = urlsafe_b64decode(settings.GOOGLE_MAPS_API_SECRET)
-
-    signature = hmac.new(decoded_key, maps_url.encode(), sha1)
-
-    encoded_signature = urlsafe_b64encode(signature.digest())
-
-    maps_url += f"&signature={encoded_signature.decode('utf-8')}"
-
-    return "https://maps.googleapis.com" + maps_url

website/events/templates/events/event.html

 {% extends "base.html" %}
-{% load i18n static bleach_tags thumbnail %}
+{% load i18n static bleach_tags thumbnail google_map_url %}
 
 {% block title %}{{ event.title }} — {% trans "Calendar"|capfirst %} — {{ block.super }}{% endblock %}
 {% block opengraph_title %}{{ event.title }} — {% trans "Calendar"|capfirst %} — {{ block.super }}{% endblock %}
@@ -200,7 +200,7 @@
 
     <div class="span6">
         <div class="location-map">
-            <img src="{{ maps_url }}"/>
+            <img src="{% google_map_url event.location %}" alt="{{ event.location }}" />
         </div>
     </div>
 </div>

website/events/views.py

 """Views provided by the events package"""
-from hashlib import sha1
-import hmac
-from base64 import decodebytes, encodebytes, urlsafe_b64decode, \
-    urlsafe_b64encode
-from urllib.parse import quote
 
 from django.contrib import messages
 from django.contrib.auth.decorators import login_required
@@ -18,7 +13,6 @@ from events import services
 from events.exceptions import RegistrationError
 from .forms import FieldsForm
 from .models import Event, Registration
-from thaliawebsite import settings
 
 
 class EventIndex(TemplateView):
@@ -70,8 +64,6 @@ class EventDetail(DetailView):
 
         context['date_now'] = timezone.now()
 
-        context['maps_url'] = services.create_google_maps_url(event)
-
         return context
 
 

website/partners/templates/partners/partner.html

 {% extends "base.html" %}
-{% load i18n bleach_tags %}
+{% load i18n bleach_tags google_map_url %}
 
 {% block title %}{{ partner.name }} — {% trans "Partners" %} — {% trans "Career" %} — {{ block.super }}{% endblock %}
 {% block opengraph_title %}{{ partner.name }} — {% trans "Partners" %} — {% trans "Career" %} — {{ block.super }}{% endblock %}
@@ -69,7 +69,9 @@
             {% endif %}
         </div>
         <div class="span7 offset1">
-            <img src="https://maps.google.com/maps/api/staticmap?center={{ partner.address|urlize }}%20{{ partner.zip_code|urlize }}%20{{ partner.city|urlize }},the+netherlands&zoom=10&size=620x200&maptype=roadmap&markers=color:0xE62272%7Clabel:%7C{{ partner.address|urlize }}%20{{ partner.zip_code|urlize }}%20{{ partner.city|urlize }},the+netherlands&sensor=false" />
+            {% with partner.address|add:" "|add:partner.zip_code|add:" "|add:partner.city|add:",The Netherlands"|urlize as location %}
+                <img src="{% google_map_url location zoom=10 size='650x200' %}" />
+            {% endwith %}
         </div>
     </div>
 

website/utils/snippets.py

 """Provides various utilities that are useful across the project"""
+import hmac
+from _sha1 import sha1
+from base64 import urlsafe_b64decode, urlsafe_b64encode
+
+from django.conf import settings
 from django.utils import timezone
+from django.template.defaultfilters import urlencode
 
 
 def datetime_to_lectureyear(date):
@@ -26,3 +32,21 @@ def datetime_to_lectureyear(date):
     if date < sept_1.date():
         return date.year - 1
     return date.year
+
+
+def create_google_maps_url(location, zoom, size):
+    maps_url = (f"/maps/api/staticmap?"
+                f"center={ urlencode(location) }&"
+                f"zoom={ zoom }&size={ size }&"
+                f"markers={ urlencode(location) }&"
+                f"key={ settings.GOOGLE_MAPS_API_KEY }")
+
+    decoded_key = urlsafe_b64decode(settings.GOOGLE_MAPS_API_SECRET)
+
+    signature = hmac.new(decoded_key, maps_url.encode(), sha1)
+
+    encoded_signature = urlsafe_b64encode(signature.digest())
+
+    maps_url += f"&signature={encoded_signature.decode('utf-8')}"
+
+    return "https://maps.googleapis.com" + maps_url

website/utils/templatetags/google_map_url.py

+from django import template
+
+from utils.snippets import create_google_maps_url
+
+register = template.Library()
+
+
+@register.simple_tag()
+def google_map_url(location, zoom=13, size='450x250'):
+    return create_google_maps_url(location, zoom, size)