def fetch_page_of_provider_prospects(cursor_key=None,
page_size=50,
search_keyword=None):
'''
Returns three values: prospects, next_curs, prev_curs
Search uses a workaround to imitate LIKE:
http://stackoverflow.com/questions/47786/google-app-engine-is-it-possible-to-do-a-gql-like-query
'''
cursor = Cursor(urlsafe=cursor_key)
if search_keyword:
limit = search_keyword + u"\ufffd"
query = ProviderProspect.query(
ProviderProspect.last_name >= search_keyword,
ProviderProspect.last_name < limit)
query = query.order(ProviderProspect.last_name)
else:
query = ProviderProspect.query()
# forward and back
forward_query = query.order(ProviderProspect.category,
ProviderProspect.last_name,
ProviderProspect.key)
backward_query = query.order(-ProviderProspect.category,
-ProviderProspect.last_name,
-ProviderProspect.key)
# fetch next
prospects, next_curs, more = forward_query.fetch_page(page_size,
start_cursor=cursor)
logging.info('next_curs: %s more: %s' % (next_curs, more))
# fetch prev (just to get cursor position)
if cursor_key:
reversed_cursor = cursor.reversed()
prev_prospects, prev_curs, prev_more = backward_query.fetch_page(
page_size, start_cursor=reversed_cursor)
# reverse the cursor (GAE docs is wrong on this)
if prev_curs:
prev_curs = prev_curs.reversed()
else:
prev_curs = None
prev_more = None
if not more:
next_curs = None
#if not prev_more:
# prev_curs = None
return prospects, next_curs, prev_curs
def get(self):
try:
cursor = Cursor.from_websafe_string(self.request.get('cursor'))
except BadValueError:
cursor = None
try:
limit = int(self.request.get('limit'))
if limit <= 0:
raise ValueError
except (TypeError, ValueError):
limit = 100
query = Poll.query().order(-Poll.created)
polls, next_cursor, has_more = query.fetch_page(limit,
start_cursor=cursor)
for poll in polls:
self.response.write(poll.render_html() + '\n\n<hr>\n\n')
if not has_more:
return
more_url = '?cursor={}&limit={}'.format(
next_cursor.to_websafe_string(), limit)
self.response.write('<p><a href="{}">More</a></p>'.format(more_url))
def create_matches_for_user(app_user, group_id, cursor=None):
logging.debug('debugging_news create_matches_for_user user:%s group:%s', app_user, group_id)
user_settings = NewsSettingsUser.create_key(app_user).get()
batch_count = 50
qry = NewsItem.list_published_by_group_id(group_id)
start_cursor = Cursor.from_websafe_string(cursor) if cursor else None
items, new_cursor, has_more = qry.fetch_page(batch_count, start_cursor=start_cursor)
si_users = []
for news_item in items:
if news_item.sender in si_users:
continue
si_users.append(news_item.sender)
to_put = []
for news_item in items:
m = _create_news_item_match(user_settings, news_item)
if not m:
continue
to_put.append(m)
if to_put:
put_in_chunks(to_put, is_ndb=True)
if has_more and new_cursor:
new_cursor_str = new_cursor.to_websafe_string().decode('utf-8')
deferred.defer(create_matches_for_user, app_user, group_id, new_cursor_str, _queue=NEWS_MATCHING_QUEUE)
def fetch_page_of_provider_prospects(cursor_key=None, page_size=50, search_keyword=None):
'''
Returns three values: prospects, next_curs, prev_curs
Search uses a workaround to imitate LIKE:
http://stackoverflow.com/questions/47786/google-app-engine-is-it-possible-to-do-a-gql-like-query
'''
cursor = Cursor(urlsafe=cursor_key)
if search_keyword:
limit = search_keyword + u"\ufffd"
query = ProviderProspect.query(ProviderProspect.last_name >= search_keyword, ProviderProspect.last_name < limit)
query = query.order(ProviderProspect.last_name)
else:
query = ProviderProspect.query()
# forward and back
forward_query = query.order(ProviderProspect.category, ProviderProspect.last_name, ProviderProspect.key)
backward_query = query.order(-ProviderProspect.category, -ProviderProspect.last_name, -ProviderProspect.key)
# fetch next
prospects, next_curs, more = forward_query.fetch_page(page_size, start_cursor=cursor)
logging.info('next_curs: %s more: %s' % (next_curs, more))
# fetch prev (just to get cursor position)
if cursor_key:
reversed_cursor = cursor.reversed()
prev_prospects, prev_curs, prev_more = backward_query.fetch_page(page_size, start_cursor=reversed_cursor)
# reverse the cursor (GAE docs is wrong on this)
if prev_curs:
prev_curs = prev_curs.reversed()
else:
prev_curs = None
prev_more = None
if not more:
next_curs = None
#if not prev_more:
# prev_curs = None
return prospects, next_curs, prev_curs
def get_context(self, **kwargs):
"""
Get the context for this view.
"""
query = kwargs.pop('query')
if not self.page_size:
context = {'list': query}
else:
cursor = self.request.GET.get('cursor')
offset = self.request.GET.get('offset')
if cursor:
cursor = Cursor(urlsafe=cursor)
# TODO: 05.06.12 wooyek named tyiple seems to be empty in template, ivestigate
# paginator = namedtuple('paginator', 'list cursor more')
list, cursor, more = query.fetch_page(self.page_size, start_cursor=cursor)
if cursor:
cursor = cursor.urlsafe()
offset = int(offset) + self.page_size if offset else 1
context = {
'list': list,
'paginator': {'cursor': cursor, 'more': more, 'offset': offset},
}
context.update(kwargs)
return context
def _get_jobs(qry, cursor, language):
fetch_size = 10
items, new_cursor, has_more = qry.fetch_page(fetch_size, start_cursor=Cursor.from_websafe_string(cursor) if cursor else None, keys_only=True)
result = GetJobsResponseTO()
result.has_criteria = True
result.items = []
for m in ndb.get_multi(items):
job_offer = JobOffer.get_by_id(m.job_id)
timestamp = get_epoch_from_datetime(m.created)
interested = m.interested if hasattr(m, 'interested') else False
job_offer_to = JobOfferTO.fromJobOffer(job_offer, timestamp, interested, language)
if not job_offer_to:
continue
result.items.append(job_offer_to)
result.cursor = new_cursor.to_websafe_string().decode('utf-8') if new_cursor else None
result.has_more = has_more
return result
def list_view(request, query, context={}, page_size=50, template_name=None):
template_name = get_list_template_name(query, template_name, request.is_ajax())
start_cursor = request.GET.get('page')
page_size = int(request.GET.get('page_size', page_size))
if start_cursor:
start_cursor = Cursor.from_websafe_string(start_cursor)
col, cursor, more = query.fetch_page(page_size, start_cursor=start_cursor)
d = {
'list': col,
'page_obj': {'has_next': more, 'next_cursor': cursor.to_websafe_string() if cursor else None }
}
context.update(d)
context = RequestContext(request, context)
template = loader.get_template(template_name)
response = HttpResponse(template.render(context))
if request.is_ajax() and more:
response['X-Cursor'] = cursor.to_websafe_string()
return response
def __init__(self,
query,
page_size=100,
start_cursor=None,
offset=0,
use_cache=True,
cache_begin=True,
**kwargs):
self.cache_begin = cache_begin
self.use_cache = use_cache
self.page_size = page_size
self.query = query
self.offset = offset
self.__future = None
self.__cached_keys = None
self.cursor = None
self.more = None
if isinstance(start_cursor, basestring):
start_cursor = Cursor(urlsafe=start_cursor)
self.start_cursor = start_cursor
super(ModelSearchCommand, self).__init__(**kwargs)
def index(_write_tmpl, pagina_origem=1, direcao_busca='FRENTE',
cursor_urlsafe='None', pagina_destino=1):
BUSCA_FRENTE = 'FRENTE'
BUSCA_TRAS = 'TRAS'
#tranformacao e calculo de parametros
pagina_origem = int(pagina_origem)
pagina_destino = int(pagina_destino)
TAMANHO_DA_PAGINA = 2
nova_direcao_busca = BUSCA_TRAS if (pagina_destino - pagina_origem) < 0 else BUSCA_FRENTE
if cursor_urlsafe == 'None':
cursor_urlsafe = None
cursor = Cursor(urlsafe=cursor_urlsafe)
# Funcao para definir se o usuario esta decrementando ou incrimentando a pagina
def direcao_pesquisa_mudou():
return direcao_busca != nova_direcao_busca
#Calculo do offset de acordo com mudanca de direcao na busca
offset = 0
if cursor_urlsafe is not None:
offset = abs(pagina_destino - pagina_origem)
offset = offset if direcao_pesquisa_mudou() else max(offset - 1, 0)
offset *= TAMANHO_DA_PAGINA
#Funcao de pesquisa de usuarios
def pesquisar_usuarios(query, cursor, offset):
if direcao_pesquisa_mudou() and cursor:
cursor = cursor.reversed()
return query.fetch_page_async(TAMANHO_DA_PAGINA,
offset=offset,
start_cursor=cursor)
#Pesquisa assincrona de usuarios de acordo com direcao da busca
if nova_direcao_busca == BUSCA_TRAS:
query = Usuario.query().order(-Usuario.nome)
usuarios_future = pesquisar_usuarios(query, cursor, offset)
else:
query = Usuario.query().order(Usuario.nome)
usuarios_future = pesquisar_usuarios(query, cursor, offset)
#Setup de numeração de páginas
pagina_inicial = max(1, pagina_destino - 2)
pagina_final = pagina_inicial + 4
pagina_anterior = max(pagina_inicial, pagina_destino - 1)
#Construção de parâmetros a serem renderizados pelo template
dct = {'adicionar_usuario_google_path': router.to_path(google),
'adicionar_usuario_face_path': router.to_path(face),
'pagina_atual': pagina_destino,
'pagina_inicial': pagina_inicial,
'pagina_final': pagina_final,
'pagina_anterior': pagina_anterior,
'pagina_posterior': pagina_destino + 1}
usuarios, cursor, mais_resultados = usuarios_future.get_result()
# revertando resultado para manter ordem crescente na visualizacao de busca
if nova_direcao_busca == BUSCA_TRAS:
usuarios.reverse()
cursor_urlsafe = cursor.urlsafe() if cursor else 'None'
dct['home_path'] = router.to_path(index,
pagina_destino,
nova_direcao_busca, cursor_urlsafe)
dct['usuarios'] = usuarios
_write_tmpl("/templates/usuario_home.html", dct)
