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90 lines
2.9 KiB
Python
90 lines
2.9 KiB
Python
from django.shortcuts import render, redirect, get_object_or_404
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from django.db.models import Sum
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from .models import Transaction
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from .forms import TransactionForm
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import json
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from datetime import timedelta
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from django.utils import timezone
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from django.db.models import Sum
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def home(request):
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# 1. Handle form submission
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if request.method == 'POST':
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form = TransactionForm(request.POST)
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if form.is_valid():
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form.save()
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return redirect('home') # Refresh the page
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else:
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form = TransactionForm()
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# 2. Fetch data for the table
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transactions = Transaction.objects.all()
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# Calculate total balance (returns 0 if database is empty)
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total_balance = transactions.aggregate(Sum('amount'))['amount__sum'] or 0
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# 3. Send data to the template
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context = {
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'form': form,
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'transactions': transactions,
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'total_balance': total_balance,
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}
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return render(request, 'home.html', context)
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def edit_transaction(request, pk):
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transaction = get_object_or_404(Transaction, pk=pk)
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if request.method == 'POST':
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form = TransactionForm(request.POST, instance=transaction)
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if form.is_valid():
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form.save()
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return redirect('home')
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else:
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form = TransactionForm(instance=transaction)
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return render(request, 'edit.html', {'form': form, 'transaction': transaction})
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def delete_transaction(request, pk):
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transaction = get_object_or_404(Transaction, pk=pk)
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if request.method == 'POST':
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transaction.delete()
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return redirect('home')
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def stats(request):
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# 1. Figure out what time period we are looking at
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time_filter = request.GET.get('filter', 'all')
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now = timezone.now().date()
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# Start with only expenses (numbers less than 0)
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expenses = Transaction.objects.filter(amount__lt=0)
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# 2. Filter by date based on the button clicked
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if time_filter == 'week':
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expenses = expenses.filter(date__gte=now - timedelta(days=7))
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elif time_filter == 'month':
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expenses = expenses.filter(date__gte=now - timedelta(days=30))
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elif time_filter == 'year':
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expenses = expenses.filter(date__gte=now - timedelta(days=365))
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# 3. Group by category and sum the amounts
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category_data = expenses.values('category__name').annotate(total=Sum('amount'))
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# 4. Format data for Chart.js
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labels = []
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data = []
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for item in category_data:
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# If category is null, call it 'Uncategorized'
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cat_name = item['category__name'] or 'Uncategorized'
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labels.append(cat_name)
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# Make the number positive for the chart (so it draws correctly)
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data.append(abs(float(item['total'])))
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context = {
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'labels': json.dumps(labels),
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'data': json.dumps(data),
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'current_filter': time_filter,
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}
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return render(request, 'stats.html', context)
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