Django - Previously page with data entered when form is invalid - django

Question

Can I make my page return with the information previously entered when the form is invalid?
Views.py
def MyView(request):
[...code...]
if request.method == 'POST':
form = MyForm(request.POST or None)
if form.is_valid()
//do something and redirect to success page
else:
//back to the page with the information filled in by the user (HERE IS MY PROBLEM)

Answer 1

the line form = MyForm(request.POST or None) creates a MyForm object called form with request data assigned to it - its kinda like filled out form. The is_valid() method checks for errors in your form and adds particular errors to your form so this is now a filled out form with errors assigned. If you want to return this form to user you should add it to context so considering its a standard django function based view it should look like this:
def MyView(request):
[...code...]
if request.method == 'POST':
form = MyForm(request.POST or None)
if form.is_valid()
form.save()
return render(request, 'succes_page_template.html')
else:
return render(request, 'current_template.html', context = {'form': form})
if the form is invalid the next thing the user sees is same page where he filled out the form ('current_template.html') but with all the fields filled with data he/she already put it also form will have erros assigned to particular fields so you can print them. If you are new to Django I suggest getting into class based views from the start - they do the heavy lifting for you and refactoring + debugging becomes much easier. here is the link cheers!