def dispatch(self, request, *args, **kwargs):
if self.preProcessPage(request, **kwargs):
# create a structure that will be sent to the web page graph/map viewer
geonetworkviewerstructure = {}
geonetworkviewerstructure['startup'] = {}
tabmode = 'list'
viewertabmode = 'list'
self.page_context['init_code'] = ''
try:
if request.REQUEST['tab'] == 'map':
tabmode = 'map'
viewertabmode = 'map'
if request.REQUEST['tab'] == 'list':
tabmode = 'list'
viewertabmode = 'list'
if request.REQUEST['tab'] == 'topo':
tabmode = 'map'
viewertabmode = 'topo'
self.page_context['init_code'] = 'toggle();'
except:
pass
self.page_context['tabmode'] = tabmode
geonetworkviewerstructure['startup']['tabmode'] = str(viewertabmode).lower
displayiteration = 'final'
iteration = 1
try:
if request.REQUEST['iter'] == 'start':
displayiteration = 'start'
iteration = 0
except:
pass
self.page_context['iter'] = displayiteration
api = request.GET.get('api')
if api is None or api == '' or api == 'leaflet':
api = 'leaflet'
else:
api = 'OL'
self.page_context['api'] = api
stage = 0
try:
if request.REQUEST['stage']:
stage = int(request.REQUEST['stage'])
except:
pass
self.page_context['stage'] = stage
# process what gets displayed in the text box and the functions of the next and previous buttons
page_subtitle = 'unknown'
nextbutton = ''
prevbutton = ''
starttext = ''
if stage == 0:
prevbutton = ''
nextbutton = '<a href="/fincatrun/' + self.page_context['ix'] + '?stage=1&tab=topo&iter=start">next »</a>'
starttext = 'Basic diagnostic information for the last run of the model. To page through the model's outputs in map and topological forms click on <b>next</b>'
page_subtitle = 'Model Status Display'
if stage == 1:
prevbutton = ''
nextbutton = '<a href="/fincatrun/' + self.page_context['ix'] + '?stage=2&tab=map&iter=start">next »</a>'
starttext = 'The world's financial system can be represented by a 'Core Periphery' network model. This interactive model shows a simplified representation with each country represented by a single node, based on data from the IMF. Your cursor will show data about each country's banking system, regulatory regions and capital ratio at the start of the model run. This draggable, force-directed graph shows the dark green core banks, serving many light green periphery banking systems. '
page_subtitle = '1. The Global Banking Network'
if stage == 2:
prevbutton = '<a href="/fincatrun/' + self.page_context['ix'] + '?stage=1&tab=topo&iter=start">« previous</a>'
nextbutton = '<a href="/page/28">next »</a>'
starttext = 'The banking network can be seen geographically. This screen shows the initial conditions of the model with the global banking network shown on a world map. Each central bank is shown in its capital city. "Core" banks are shown darker green. Mouse over each bank to get more details. '
page_subtitle = '2. The Geography of Banking'
if stage == 6:
prevbutton = '<a href="/page/27">« previous</a>'
nextbutton = '<a href="/fincatrun/' + self.page_context['ix'] + '?stage=7&tab=topo&iter=final">next »</a>'
starttext = 'This screen shows a subset of the iterations of the model. Key central banks are shown with their balance sheets taken at iteration points in the model as they change.'
page_subtitle = '6. Model Run Progression'
if stage == 7:
prevbutton = '<a href="/fincatrun/' + self.page_context['ix'] + '?stage=6&tab=list">« previous</a>'
nextbutton = '<a href="/fincatrun/' + self.page_context['ix'] + '?stage=8&tab=map&iter=final">next »</a>'
starttext = 'The banking network at the end of the model run shows the capital ratios of the banks that are worst affected, from green to red, with red being worst. The model provides a lot of detailed data of the crisis progression for analysis.'
page_subtitle = '7. Contagion Mapping'
if stage == 8:
prevbutton = '<a href="/fincatrun/' + self.page_context['ix'] + '?stage=7&tab=topo&iter=final">« previous</a>'
nextbutton = '<a href="/page/21">next »</a>'
starttext = 'The crisis in the international banking network can be seen geographically. The contagion has spread from its initial starting point and has impacted many countries throughout Europe and has affected countries further afield.'
page_subtitle = '8. The Geography of the Financial Crisis'
self.page_context['nextbutton'] = nextbutton
self.page_context['prevbutton'] = prevbutton
self.page_context['starttext'] = starttext
self.page_context['results'] = {'entity': [], 'targeturl': '', 'fields': [] }
current_object = None
if not self.page_context['addmode']: # we are reading an existing record
try:
current_object = FinCatRun.objects.get(pk=self.page_context['ix'])
except ObjectDoesNotExist:
return self.showErrorPage(request, 'Error: Record ' + str(self.page_context['ix']) + ' does not exist')
except:
return self.showErrorPage(request, 'Error: invalid parameter supplied')
self.page_context['current_object'] = current_object
self.page_context['page_title'] = current_object.name
#page_subtitle = current_object.name
self.page_context['page_subtitle'] = page_subtitle
# get the picked results data structure from the last run of this model instance
if not self.page_context['editmode'] and current_object.results is not None and current_object.results != '':
results = cPickle.loads(base64.b64decode(current_object.results))
balanceSheets = results[0][0] # when bankId lending investments cash borrowing deposits capital
borrowings = results[0][1] # when fromBankId toBankId amount
defaults = results[0][2] # when bankId ratio
holdings = results[1][0] # when investmentId bankId amount
prices = results[1][0] # when investmentId price
# results table
fieldlist = \
[
[{'bankId': {'title': 'Bank id', 'type': 'CharField', }}],
[{'when': {'title': 'Iteration', 'type': 'IntegerField', }}],
[{'lending': {'title': 'Lending', 'type': 'DecimalField', 'decimal_places': 1, }}],
[{'investments': {'title': 'Investments', 'type': 'DecimalField', 'decimal_places': 1, }}],
[{'cash': {'title': 'Cash', 'type': 'DecimalField', 'decimal_places': 1, }}],
[{'borrowing': {'title': 'Borrowing', 'type': 'DecimalField', 'decimal_places': 1, }}],
[{'deposits': {'title': 'Deposits', 'type': 'DecimalField', 'decimal_places': 1, }}],
[{'capital': {'title': 'Capital', 'type': 'DecimalField', 'decimal_places': 1, }}],
[{'capitalratio': {'title': 'Capital ratio %', 'type': 'DecimalField', 'decimal_places': 1, }}],
]
balanceSheets2 = [balanceSheet for balanceSheet in balanceSheets if balanceSheet.bankId in ['Japan', 'United Kingdom', 'France', 'United States', 'Greece','Italy', 'Germany', 'China','Russia','Spain']]
from operator import itemgetter, attrgetter
balanceSheets3 = sorted(balanceSheets2, key=attrgetter('bankId'), reverse=False)
balanceSheet4 = []
for b in balanceSheets3:
# create a new named tuple type by adding a field to the balance sheet named tuple
newtupletype = namedtuple ('BalanceSheet', b._fields+('capitalratio',))
# copy values across
d = newtupletype(b.when,b.bankId,b.lending,b.investments,b.cash,b.borrowing,b.deposits,b.capital,(b.capital/(b.lending+b.investments+b.cash))*100)
balanceSheet4.append(d)
resultsFields = {'entity': balanceSheet4, 'targeturl': '/bank/', 'fields': fieldlist }
self.page_context['results'] = resultsFields
n = Network()
#try:
# ix = int(self.page_context['ix'])
#except:
# return self.showErrorPage(request, 'Invalid network id')
status = n.load(7) # load a network from the asset engine database by its network id
if not status:
return self.showErrorPage(request, 'Error loading network : ' + n.statusMessage)
# make default popup
n.makePopup()
# get network metrics
geonetworkviewerstructure['metrics'] = n.getMetrics()
# iterate the banks in the network
for node in n.layergraphs[0].nodes(data=True):
nodeid = node[0] #node array index 0 is the node id, index 1 is the attribute list
attributes = node[1]
attributes['intensity'] = 0
attributes['guid'] = nodeid
count = n.layergraphs[0].in_degree(nodeid)
# if the tier is not already defined in the file, define it
if 'tier' not in attributes:
# base tier on number of incoming edges
tier = 3
if count > 8:
tier = 2
if count > 15:
tier = 1
if attributes['core'] == 'True':
tier = 0
else:
tier = attributes['tier']
in_edges = n.layergraphs[0].in_edges(nodeid) # gets inward edges
for edge in in_edges:
# create a tier attribute on the edge
n.layergraphs[0][edge[0]][edge[1]]['tier']=tier
n.layergraphs[0][edge[0]][edge[1]]['linkstyle'] = 0
attributes['tier'] = tier
attributes['popup'] = '<div class="n">' + attributes['region'] + '</div><div class="a">' + attributes['label'] + '</div><div>Outward links:' + unicode(n.layergraphs[0].out_degree(nodeid)) + '</div><div>Inward links:' + unicode(n.layergraphs[0].in_degree(nodeid)) + '</div>'
bankId = attributes['label']
# each bank has several balance sheet records taken as the model runs
allBSRecords = [balanceSheet for balanceSheet in balanceSheets if balanceSheet.bankId in [bankId]]
# initial balance sheet record
initBSRecord = allBSRecords[0]
# the last balance sheet record is the final result
finalBSRecord = allBSRecords[-1]
# compute capital ratio
initcapratio = (initBSRecord.capital/(initBSRecord.lending+initBSRecord.investments+initBSRecord.cash))*100
finalcapratio = (finalBSRecord.capital/(finalBSRecord.lending+finalBSRecord.investments+finalBSRecord.cash))*100
# store as an attribute on the bank node
attributes['initcapratio'] = round(initcapratio, 1)
attributes['finalcapratio'] = round(finalcapratio, 1)
tier = 3 # banks in good shape - capratio > 5.5
# core banks in good shape
if attributes['core'] == 'True':
tier = 4
if finalcapratio < 0.02:
tier = 0
else:
if finalcapratio < 2.0:
tier = 1
else:
if finalcapratio < 4.0:
tier = 2
else:
if finalcapratio < 5.5:
tier = 3
# if an iter querystring parameter was set to 'start' then
# color up nodes by whether they are core or not
if displayiteration == 'start':
tier = 3
if attributes['core'] == 'True':
tier = 4
attributes['tier'] = tier
attributes['nodestyle'] = tier
# add the cap ratio to the popup
if displayiteration == 'start':
attributes['popup'] = attributes['popup'] + '<br/>Init cap ratio ' + unicode(round(initcapratio, 1)) + '%'
else:
attributes['popup'] = attributes['popup'] + '<br/>Final cap ratio ' + unicode(round(finalcapratio, 1)) + '%'
# add in if its core
if attributes['core'] == 'True':
attributes['popup'] = attributes['popup'] + '<br/>Core'
# to reduce the size of the JSON string, we delete the node attributes we dont need,
#n.minimise()
#jsonGraphStr = n.get_json()
#self.page_context['jsonGraph'] = jsonGraphStr
bankdefault = BankDefault(['Greece', 'Cyprus']) # get scenario
liquiditymodel = Liquidity(bankdefault)
liquiditymodel.get_run(self.page_context['ix']) # load previous model run from database
activelayer = 0
liquiditymodel.run_model(n, activelayer, iteration) # TODO we actually need to run the model in the POST, not here
liquiditymodel.get_results(True, activelayer, iteration)
geonetworkviewerstructure['jsonGraph'] = liquiditymodel.json
# other info to pass through the page context
self.page_context['pageclass'] = 'fincatrun'
self.page_context['editlink'] = ('/' + 'fincatrun' + '/' + str(self.page_context['ix'])).lower()
# pass the data to the geonetwork viewer template tag
geonetworkviewerstructure['uniqueid'] = 1 # allows multiple viewers on same page
self.page_context['geonetworkviewer1'] = geonetworkviewerstructure
###############
# POST
###############
if request.method == 'POST':
if self.page_context['addmode']: # new record, create at first with default values
current_object = FinCatRun()
current_object.name = 'untitled'
#current_object.networkid = Network.objects.get(pk=1)
current_object.lastupdate = datetime.now()
current_object.lastupdatebyid = request.user.id
current_object.ownerid = request.user.id
current_object.status = 'not run yet, or run failed'
self.page_context['editmode'] = True # in case it turns out there is an error in input
# read the page form
# note as we upload a file here, we need enctype="multipart/form-data" in the <form> tag and to add request.FILES, to the call below
pageFormEdit = PageFormEdit(request.POST, request.FILES, instance=current_object , prefix='mainpageform') # A form bound to the POST data, prefix allows multiple forms
if pageFormEdit.is_valid(): # All validation rules pass
self.page_context['editmode'] = False # no errors
# now create the record in the database
current_object.save()
# now we know the new record's id
self.page_context['ix'] = current_object.id
self.page_context['current_object'] = current_object
# now save the screen form values into the database
pageFormEdit.save()
# see if a parameter file got uploaded
if current_object.parameterfile.name != '':
# process a new parameter file here into the fincat_bankparameters table
# first erase all pre-existing records, if any, with runid equal to this one
# after a successful upload of the parameter file, we need to delete it from the record so it does not get reuploaded every time
# but we save its name in a separate field
current_object.originalparameterfilename = unicode(request.FILES['mainpageform-parameterfile'])
current_object.actualparameterfilename = current_object.parameterfile.name
current_object.lastparameterfileuploaddate = datetime.now()
current_object.parameterfile = None
# run the model
pList, basicGraph = utils.read_params_file(PATH, 'countries1.xml')
results = simulator.setup_simulation(pList, basicGraph)
current_object.rundate = datetime.now()
current_object.status = 'Success'
current_object.results = base64.b64encode(cPickle.dumps(results, cPickle.HIGHEST_PROTOCOL))
current_object.save()
return HttpResponseRedirect('/fincatrun/' + str(self.page_context['ix'])) # Redirect after successful POST to the non editing version
else:
self.page_context['form'] = pageFormEdit
return render(request, self.template_name, self.page_context) # Error - return just the form when there is an error - the template must not try and render anything outside the form because the contact data is not present
###############
# GET
###############
if request.method == 'GET':
if self.page_context['addmode']: # new record - initialise a dummy record that we dont save with defaults to see on the page
current_object = FinCatRun()
current_object.name = 'untitled'
#current_object.networkid = Network.objects.get(pk=1)
self.page_context['editmode'] = True
if self.page_context['editmode']: # edit or add mode
current_object.status = 'Pending run...'
pageFormEdit = PageFormEdit(instance=current_object, prefix="mainpageform") # prefix allows multiple forms
self.page_context['form'] = pageFormEdit
else:
pageFormDisplay = PageFormDisplay (instance=current_object) # display mode
pagefields = self.createFormFieldStructure( pageFormDisplay, current_object )
self.page_context['tablesetup1'] = pagefields # pass field structure to generictablerenderer
return render(request, self.template_name, self.page_context)