added costs

app/costs/views.py

@@ -0,0 +1,44 @@
+from django.contrib.auth.decorators import login_required
+from django.shortcuts import render, redirect
+from .models import Costs
+from .forms import CostsForm
+
+@login_required(login_url="account_login")
+def costs_all(request):
+    costs = Costs.objects.all()
+    context = {"costs": costs}
+    return render(request, "costs/costs_all.html", context)
+
+
+@login_required(login_url="account_login")
+def costs_edit(request, id):
+    costs = Costs.objects.get(id=id)
+    form = CostsForm(request.POST or None, instance=costs)
+    if request.method == "POST":
+        if form.is_valid():
+            form.save()
+            return redirect("costs_all")
+
+    context = {"costs": costs, "form": form}
+    return render(request, "costs/costs_edit.html", context)
+
+@login_required(login_url="account_login")
+def costs_delete(request, id):
+    costs = Costs.objects.get(id=id)
+    form = CostsForm(request.POST or None, instance=costs)
+    if request.method == "POST":
+        costs.delete()
+        return redirect("costs_all")
+    context = {"costs": costs}
+    return render(request, "costs/costs_delete.html", context)
+
+@login_required(login_url="account_login")
+def costs_create(request):
+    form = CostsForm()
+    if request.method == "POST":
+        form = CostsForm(request.POST or None)
+        if form.is_valid():
+            fs = form.save(commit=False)
+            fs.user = request.user
+            fs.save()
+    return render(request, "costs/costs_all.html")