def load_export_form(request, export_run_id):
"""Render the html form to load export run."""
if not (request.user.is_authenticated()
and request.user.has_perm('exporttool.can_create')):
return HttpResponse(_("No permission to create export"))
export_run = get_object_or_404(ExportRun, pk=export_run_id)
form = ExportRunForm(instance=export_run)
return render_to_response('export/exports_new.html', {'form': form})
def new_export(request):
"""
Renders a html with only the form for creating a new export run
* It uses the Django-validation bud adds a custom validation rule:
there has to be at least one scenario selected. Otherwis an error
is added to the error list.
* If the form information is valid, a new export run is created and saved,
Also the needed information for the genereation of the waterdepth map is
saved in a CSV-file.
"""
if not (request.user.is_authenticated()
and request.user.has_perm('exporttool.can_create')):
return HttpResponse(_("No permission to create export"))
if request.method == 'POST':
form = ExportRunForm(request.POST)
# necessary to call 'is_valid()' before adding custom errors
valid = form.is_valid()
scenario_ids = json.loads(request.REQUEST.get('scenarioIds'))
try:
setting_max_scenarios = Setting.objects.get(
key='MAX_SCENARIOS_PER_EXPORT').value
max_scenarios = int(setting_max_scenarios)
except Setting.DoesNotExist:
max_scenarios = DEFAULT_MAX_SCENARIOS_PER_EXPORT
if not scenario_ids:
form._errors['scenarios'] = form.error_class(
[u"U heeft geen scenario's geselecteerd."])
valid = False
elif len(scenario_ids) > max_scenarios:
form._errors['scenarios'] = form.error_class([
u"Er zijn maximaal {} scenario's per export toegestaan.".
format(max_scenarios)
])
valid = False
if valid:
new_export_run = ExportRun(
export_type=ExportRun.EXPORT_TYPE_WATER_DEPTH_MAP,
name=form.cleaned_data['name'],
description=form.cleaned_data['description'],
owner=request.user,
creation_date=datetime.datetime.now(),
gridsize=form.cleaned_data['gridsize'],
export_max_waterdepth=form.
cleaned_data['export_max_waterdepth'],
export_max_flowvelocity=form.
cleaned_data['export_max_flowvelocity'],
export_possibly_flooded=form.
cleaned_data['export_possibly_flooded'],
export_arrival_times=form.cleaned_data['export_arrival_times'],
export_period_of_increasing_waterlevel=form.
cleaned_data['export_period_of_increasing_waterlevel'],
export_inundation_sources=form.
cleaned_data['export_inundation_sources'],
export_scenario_data=form.cleaned_data['export_scenario_data'],
public=form.cleaned_data['public'])
new_export_run.save()
new_export_run.scenarios = Scenario.objects.filter(
pk__in=scenario_ids)
new_export_run.start()
return HttpResponse('redirect_in_js_to_' +
reverse('flooding_tools_export_index'))
else:
form = ExportRunForm()
return render_to_response('export/exports_new.html', {'form': form})
