jpt-archive/django-layar
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add pagination

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This commit is contained in:
James Turk 2009-10-22 15:42:21 -04:00
parent 8c3230ad43
commit 666d51ba59
1 changed files with 30 additions and 15 deletions
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45
layar/views.py
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@ -55,14 +55,14 @@ class LayarView(object):
developer_hash = request.GET['developerHash']
timestamp = request.GET['timestamp']
layer_name = request.GET['layerName']
latitude = request.GET['lat']
longitude = request.GET['lon']
accuracy = request.GET['accuracy']
radius = request.GET['radius']
lat = float(request.GET['lat'])
lon = float(request.GET['lon'])
accuracy = int(request.GET['accuracy'])
radius = int(request.GET['radius'])
radio_option = request.GET.get('RADIOLIST')
search_query = request.GET.get('SEARCHBOX')
custom_slider = request.GET.get('CUSTOM_SLIDER')
page_key = request.GET.get('pageKey')
search = request.GET.get('SEARCHBOX')
slider = request.GET.get('CUSTOM_SLIDER')
page = int(request.GET.get('pageKey', 0))
# oauth: oauth_consumer_key, oauth_signature_method, oauth_timestamp,
# oauth_nonce, oauth_version, oauth_signature
@ -77,20 +77,35 @@ class LayarView(object):
if sha1(key).hexdigest() != developer_hash:
raise LayarException(20, 'Bad developerHash')
# get ``max_results`` items from queryset
try:
poi_func = getattr(self, 'get_%s_pois' % layer_name)
qs_func = getattr(self, 'get_%s_queryset' % layer_name)
except AttributeError:
raise LayarException(21, 'no such layer: %s' % layer_name)
pois = poi_func(latitude=latitude, longitude=longitude, radius=radius,
start_index=0,
radio_option=radio_option, search_query=search_query,
custom_slider=custom_slider)
qs = qs_func(latitude=lat, longitude=lon, radius=radius,
radio_option=radio_option, search_query=search,
slider_value=slider)[:self.max_results]
# pagination logic
if len(pois) > self.max_results:
pois = pois[:self.max_results]
# do pagination if results_per_page is set
if self.results_per_page:
start_index = self.results_per_page * page
end_index = start_index + self.results_per_page
# if there are more pages, indicate that in response
if end_index < qs.count()-1:
layar_response['morePages'] = True
layar_response['nextPageKey'] = str(page+1)
qs = qs[start_index:end_index]
# convert queryset into POIs
try:
poi_func = getattr(self, 'poi_from_%s_item' % layer_name)
except AttributeError:
raise LayarException(21, 'no such layer: %s' % layer_name)
pois = [poi_func(item) for item in qs]
layar_response['hotspots'] = [poi.to_dict() for poi in pois]
except LayarException, e: