Created
August 28, 2018 18:43
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Example of Proxy Model Dependency Injection
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from __future__ import unicode_literals | |
from django.shortcuts import render | |
from models import Visualization | |
from exceptions import IncompleteDataException | |
from .forms import VisualizationForm | |
from django.contrib.auth.decorators import login_required | |
VISUALIZATIONS = { | |
"infection_rate_visualization": InfectionRateVisualization.objects.get(pk="infection_rate_visualization"), | |
"friend_family_visit_visualization": FriendFamilyVisitVisualization.objects.get(pk="friend_family_visit_visualization"), | |
"food_request_visualization": FoodRequestVisualization.objects.get(pk="food_request_visualization") | |
} | |
@login_required | |
def transform(request): | |
name = request.GET['script'] | |
if request.POST and request.FILES: | |
form = VisualizaionForm(request.POST, request.FILES) | |
if form.is_valid(): | |
input_file = request.FILES['file'] | |
image = None | |
try: | |
vizualization = VISUALIZATIONS[name] | |
image = vizualization.from_data(name, input_file) | |
except IncompleteDataException as e: | |
return render(request, 'visualizations/form.html', {'error': e.message()}) | |
return render(request, 'visualizations/results.html', {'image': image}) |
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