fix: Handle if place of search is not found

src/fellchensammlung/templates/fellchensammlung/search.html

@@ -9,5 +9,8 @@
         {{ search_form.as_p }}
         <input class="btn" type="submit" value="Search" name="search">
     </form>
+    {% if not place_found %}
+    <p class="error">{% translate "Ort nicht gefunden" %}</p>
+    {% endif %}
     {% include "fellchensammlung/lists/list-adoption-notices.html" %}
 {% endblock %}

src/fellchensammlung/tools/geo.py

@@ -49,19 +49,25 @@ class RequestMock:
 
 class GeoAPI:
     api_url = settings.GEOCODING_API_URL
+    # Set User-Agent headers as required by most usage policies (and it's the nice thing to do)
     headers = {
         'User-Agent': f"Notfellchen {nf_version}",
         'From': 'info@notfellchen.org'  # This is another valid field
     }
 
     def __init__(self, debug=False):
+        # If debug mode is on, we replace the actual goecoding server with a cheap local mock
+        # In order to do this without changing how we normally do things, we replace the requests library with our mock
         if debug:
             self.requests = RequestMock
         else:
             self.requests = requests
 
     def get_coordinates_from_query(self, location_string):
-        result = self.requests.get(self.api_url, {"q": location_string, "format": "jsonv2"}, headers=self.headers).json()[0]
+        try:
+            result = self.requests.get(self.api_url, {"q": location_string, "format": "jsonv2"}, headers=self.headers).json()[0]
+        except IndexError:
+            return None
         return result["lat"], result["lon"]
 
     def _get_raw_response(self, location_string):

src/fellchensammlung/views.py

@@ -138,17 +138,23 @@ def animal_detail(request, animal_id):
 
 def search(request):
     if request.method == 'POST':
+        latest_adoption_list = AdoptionNotice.objects.order_by("-created_at")
+        active_adoptions = [adoption for adoption in latest_adoption_list if adoption.is_active]
+
         search_form = AdoptionNoticeSearchForm(request.POST)
         max_distance = int(request.POST.get('max_distance'))
         if max_distance == "":
             max_distance = None
         geo_api = GeoAPI()
         search_position = geo_api.get_coordinates_from_query(request.POST['postcode'])
-
-        latest_adoption_list = AdoptionNotice.objects.order_by("-created_at")
-        active_adoptions = [adoption for adoption in latest_adoption_list if adoption.is_active]
-        adoption_notices_in_distance = [a for a in active_adoptions if a.in_distance(search_position, max_distance)]
-        context = {"adoption_notices": adoption_notices_in_distance, "search_form": search_form}
+        if search_position is None:
+            place_found = False
+            adoption_notices_in_distance = active_adoptions
+        else:
+            place_found = True
+            adoption_notices_in_distance = [a for a in active_adoptions if a.in_distance(search_position, max_distance)]
+            
+        context = {"adoption_notices": adoption_notices_in_distance, "search_form": search_form, "place_found": place_found}
     else:
         latest_adoption_list = AdoptionNotice.objects.order_by("-created_at")
         active_adoptions = [adoption for adoption in latest_adoption_list if adoption.is_active]