def rank(request):
if request.method == 'POST':
data = json.loads(request.body)
rank_methods = [
method for method in data['rank_methods']
if method['is_selected']]
filter_methods = [
method for method in data['filter_methods']
if method['is_selected']]
if 'limit' in data:
limit = int(data['limit'])
else:
limit = 50
data = cache.get(hash(request.body))
if not data:
ranker = Ranker(
rank_methods, filter_methods, limit)
data = ranker.process()
cache.set(
hash(request.body),
data, 60*60*24)
rank_results = data.to_json(orient='records')
else:
rank_results = json.dumps([])
return HttpResponse(rank_results, content_type='application/json')
def rank(request):
if request.method == 'POST':
data = json.loads(request.body)
rank_methods = [
method for method in data['rank_methods'] if method['is_selected']
]
filter_methods = [
method for method in data['filter_methods']
if method['is_selected']
]
if 'limit' in data:
limit = int(data['limit'])
else:
limit = 50
data = cache.get(hash(request.body))
if not data:
ranker = Ranker(rank_methods, filter_methods, limit)
data = ranker.process()
cache.set(hash(request.body), data, 60 * 60 * 24)
rank_results = data.to_json(orient='records')
else:
rank_results = json.dumps([])
return HttpResponse(rank_results, content_type='application/json')
def testRankByPEReturnsLowestFirst(self):
pe_rank = {
'name': 'pe',
'min': {
'changeable': True,
'value': 5
},
'ascending': True
}
ranker = Ranker([pe_rank], [], limit=50)
results = ranker.process()
self.assertTrue(results.code__code[0:1].values[0] == 'ARB')
def testRankByROEReturnHighestFirst(self):
roe_rank = {
'name': 'roe',
'max': {
'changeable': True,
'value': 0.70
},
'ascending': False
}
ranker = Ranker([roe_rank], [], limit=50)
results = ranker.process()
self.assertTrue(results.code__code[0:1].values[0] == 'SRX')
def testRankROEAvg5ReturnsCorrectTop(self):
roe_rank = {
'name': 'roe',
'max': {
'changeable': True,
'value': 0.80,
},
'average': {
'changeable': True,
'value': 5
},
'ascending': False
}
ranker = Ranker([roe_rank], [], limit=50)
results = ranker.process()
self.assertTrue(results.code__code[0:1].values[0] == 'ARB')
self.assertTrue(results.code__code[-1:].values[0] == 'ANZ')
def testRankAndFilterRemovesTooSmallCompanies(self):
market_cap_filter = {
'name': 'market_cap',
'min': {
'changeable': True,
'value': 5000000
},
}
roe_rank = {
'name': 'roe',
'max': {
'changeable': True,
'value': 0.70
},
'ascending': False
}
ranker = Ranker([roe_rank], [market_cap_filter], limit=50)
results = ranker.process()
self.assertTrue(results.code__code[0:1].values[0] == 'CBA')
def testRankROEAndPEReturnsCorrectTop(self):
roe_rank = {
'name': 'roe',
'max': {
'changeable': True,
'value': 0.70
},
'ascending': False
}
pe_rank = {
'name': 'pe',
'min': {
'changeable': True,
'value': 5
},
'ascending': True
}
ranker = Ranker([pe_rank, roe_rank], [], limit=50)
results = ranker.process()
self.assertTrue(results.code__code[0:1].values[0] == 'SRX')