symposion_app/registrasion/staff_views.py

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import forms
from django.db.models import Q
from django.shortcuts import render
from functools import wraps
from models import commerce
'''
All reports must be viewable by staff only (permissions?)
Reports can have:
A form
* Reports are all *gettable* - you can save a URL and get back to the same
report
* Fetching a report *cannot* break the underlying data.
A table
* Headings
* Data lines
* Formats are pluggable
'''
class Report(object):
def __init__(self, form, headings, data):
self._form = form
self._headings = headings
self._data = data
@property
def form(self):
''' Returns the form. '''
return self._form
@property
def headings(self):
''' Returns the headings for the table. '''
return self._headings
@property
def data(self):
''' Returns the data rows for the table. '''
return self._data
def report(view):
''' Decorator that converts a report view function into something that
displays a Report.
'''
print "hello"
@wraps(view)
def inner_view(request, *a, **k):
print "lol"
report = view(request, *a, **k)
ctx = {
"form": report.form,
"report": report,
}
return render(request, "registrasion/report.html", ctx)
return inner_view
@report
def items_sold(request):
''' Summarises the items sold and discounts granted for a given set of
products, or products from categories. '''
print "beep"
form = forms.ProductAndCategoryForm(request.GET)
data = None
headings = None
if form.is_valid() and form.has_changed():
products = form.cleaned_data["product"]
categories = form.cleaned_data["category"]
# TODO augment the form to allow us to filter by invoice status.
line_items = commerce.LineItem.objects.filter(
Q(product=products) | Q(product__category=categories),
invoice__status=commerce.Invoice.STATUS_PAID,
).select_related("invoice")
headings = ["invoice_id", "description", "quantity", "price"]
data = []
for line in line_items:
data.append([line.invoice.id, line.description, line.quantity, line.price])
return Report(form, headings, data)