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Django Forms: if not valid, show form with error message
...g>
</div>
{% endfor %}
{% endif %}
An example:
def myView(request):
form = myForm(request.POST or None, request.FILES or None)
if request.method == 'POST':
if form.is_valid():
return HttpResponseRedirect('/thanks/')
return render(request, 'my_t...
FFMPEG (libx264) “height not divisible by 2”
...
Why does -vf scale=-2:-2 not work? In my case I want to preserve the original file size as much as possible. What worked for me was -vf scale=-2:ih. But it doesn't work if both h/w are uneven.
– Pascal
Jun 30 '15 at 8:27
...
Locking a file in Python
...n processes at once. I have found some solutions online, but most fail for my purposes as they are often only Unix based or Windows based.
...
How to move an iFrame in the DOM without losing its state?
...ged in the past 5 years regarding this issue. You can check the summary in my answer regarding the changes during these years.
– Dekel
Oct 9 '16 at 12:24
...
Where should @Service annotation be kept? Interface or Implementation?
... @Yubaraj: fair point, but your question is about a quite other topic (for my answer I took the assumption: that there is a interface and the question is not about having the interface but about where to place the annotation). For your question: There is almost no reason to have a interface for a bu...
What is the best way to solve an Objective-C namespace collision?
...nload it and load the other one when you need to use the other framework.
My initial idea was to use NSBundle to load one of the frameworks, then copy or rename the classes inside that framework, and then load the other framework. There are two problems with this. First, I couldn't find a function ...
Easiest way to open a download window without navigating away from the page
...= filePath.substr(filePath.lastIndexOf('/') + 1);
link.click();
}
In my application, I am using it this way:
downloadFile('report/xls/myCustomReport.xlsx');
Working Demo:
function downloadFile(filePath) {
var link = document.createElement('a');
link.href = filePath;
link.downl...
How to enter a multi-line command
...er I tend to see those 2-screen-wide powershell scripts every where. #ShakeMyHead
– RayLuo
Nov 21 '16 at 23:40
I was s...
Is there a way to instantiate objects from a string holding their class name?
... How do you ensure that DerivedB::reg is actually initialized? My understanding is that it may not be constructed at all if no function or object defined in the translation unit derivedb.cpp, as per 3.6.2.
– musiphil
Dec 8 '12 at 5:28
...
How to order events bound with jQuery
...
I had been trying for ages to generalize this kind of process, but in my case I was only concerned with the order of first event listener in the chain.
If it's of any use, here is my jQuery plugin that binds an event listener that is always triggered before any others:
** UPDATED inline with...