def delete_product(request, pid):
with open("product.txt", "r+") as f:
d = f.readlines()
f.seek(0)
for i in d:
i = i.split(" ")
if i[1] != pid:
i = " ".join(i)
f.write(i)
f.truncate()
with open("index.txt", "r+") as f:
d = f.readlines()
f.seek(0)
for i in d:
i = i.split(" ")
p_id = pid + "\n"
if i[1] != p_id:
i = " ".join(i)
f.write(i)
f.truncate()
with open("secindex.txt", "r+") as f:
d = f.readlines()
f.seek(0)
for i in d:
i = i.split(" ")
if i[0] != pid:
i = " ".join(i)
f.write(i)
f.truncate()
sort_index()
sort_secindex()
messages.success(request, ('Item has been deleted'))
return redirect('productapp:view_all')
def add_product(request):
if request.method == "POST":
product_form = AddProduct(data=request.POST)
index = None
if product_form.is_valid():
pname = str(product_form.cleaned_data['pname'])
pname = pname.split(" ")
pname = "-".join(pname)
pid = str(product_form.cleaned_data['pid'])
with open("product.txt", "r") as file:
for line in file:
arr = line.split(" ")
if pid.upper() == arr[1]:
messages.success(request, ('Item Already Exists'))
return redirect("productapp:add")
index = int(arr[0])
with open("product.txt", "a") as file:
if index is None:
index = 0
else:
index = index + 1
file.write(str(index))
file.write(" ")
file.write((str(product_form.cleaned_data['pid'])).upper())
file.write(" ")
file.write(pname.upper())
file.write(" ")
file.write(str(product_form.cleaned_data['quantity']))
file.write(" ")
file.write(str(product_form.cleaned_data['price']))
file.write("\n")
with open("index.txt", "a") as file:
file.write(str(index))
file.write(" ")
file.write((str(product_form.cleaned_data['pid'])).upper())
file.write("\n")
with open("secindex.txt", "a") as file:
file.write((str(product_form.cleaned_data['pid'])).upper())
file.write(" ")
file.write(pname.upper())
file.write("\n")
#sorting index on basis of primary key
sort_index()
sort_secindex()
messages.success(request, ('Item has been Added'))
return redirect("productapp:view_all")
else:
product_form = AddProduct()
return render(request, "productapp/add_product.html",
{'product_form': product_form})
def update_product(request, pid):
if request.method == "POST":
pid1 = request.POST.get('pid')
pname = request.POST.get('pname')
pname = pname.split(" ")
pname = "-".join(pname)
quantity = request.POST.get('quantity')
price = request.POST.get('price')
with open("product.txt", "r") as file:
for line in file:
arr1 = line.split(" ")
if pid.upper() == arr1[1]:
arr1 = line.split(" ")
break
with open("product.txt", "r") as file:
data = file.readlines()
new_data = []
index_data = []
secindex_data = []
for line in data:
arr = line.split(" ")
if arr[1] == pid1.upper() and arr[1] != pid.upper():
messages.success(request, ('Product Id already exists'))
return render(request, "productapp/update.html",
{'arr': arr1})
if arr[1] == pid:
line = arr[0] + " " + pid1.upper() + " " + pname.upper(
) + " " + quantity + " " + price + "\n"
index = arr[0] + " " + pid1.upper() + "\n"
secindex = pid1.upper() + " " + pname.upper() + "\n"
new_data.append(line)
index_data.append(index)
secindex_data.append(secindex)
else:
new_data.append(line)
index = arr[0] + " " + arr[1].upper() + "\n"
secindex = arr[1].upper() + " " + arr[2].upper() + "\n"
index_data.append(index)
secindex_data.append(secindex)
with open("product.txt", "w") as file:
file.writelines(new_data)
with open("index.txt", "w") as file:
file.writelines(index_data)
with open("secindex.txt", "w") as file:
file.writelines(secindex_data)
sort_index()
sort_secindex()
messages.success(request, ('Item has been Updated'))
return redirect("productapp:view_all")
with open("product.txt", "r") as file:
for line in file:
arr1 = line.split(" ")
if pid == arr1[1]:
return render(request, "productapp/update.html", {'arr': arr1})
else:
messages.success(request, ('No Item Exists'))
return redirect("productapp:search")