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In a django model custom save() method, how should you identify a new object?
...t self._state is not a private instance variable, but named that way to avoid conflicts, checking self._state.adding is now the preferable way to check.
self.pk is None:
returns True within a new Model object, unless the object has a UUIDField as its primary_key.
The corner case you might have...
Check if a user has scrolled to the bottom
... works fine, spare the issue that the value of $(document).height() varies by browser.
To make it work on all browsers, use this function from James Padolsey:
function getDocHeight() {
var D = document;
return Math.max(
D.body.scrollHeight, D.documentElement.scrollHeight,
D...
Remove underline from links in TextView - Android
...
You can do it in code by finding and replacing the URLSpan instances with versions that don't underline. After you call Linkify.addLinks(), call the function stripUnderlines() pasted below on each of your TextViews:
private void stripUnderlin...
Android RelativeLayout programmatically Set “centerInParent”
...
Completely untested, but this should work:
View positiveButton = findViewById(R.id.positiveButton);
RelativeLayout.LayoutParams layoutParams =
(RelativeLayout.LayoutParams)positiveButton.getLayoutParams();
layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT, RelativeLayout.TRUE);
positiveBut...
How to change my Git username in terminal?
...e github puts your username in it. You can take a look at the original URL by typing
git config --get remote.origin.url
Or just go to the repository page on Github and get the new URL. Then use
git remote set-url origin https://{new url with username replaced}
to update the URL with your new ...
How can you dynamically create variables via a while loop? [duplicate]
...at are implemented as dictionaries too. I wonder why I have been downvoted by some downvote sniper for my answer creating an item in globals() while the answer of Gintautas Miliauskas is upvoted and this answer that doesn't give the how-to for <dynamically create key> is upvoted 3 times.
...
Django migration strategy for renaming a model and relationship fields
.... But a note - I also had to rename and/or remove PostgreSQL field indexes by hand because, after renaming Foo to Bar, I created a new model named Bar.
– Anatoly Scherbakov
Jun 7 '15 at 18:47
...
Pure virtual destructor in C++
... imageUploader: {
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What are the pros and cons of both Jade and EJS for Node.js templating? [closed]
...fferences
However, EJS is not as powerful as Jade, it doesn't have blocks by default (this guy implemented a block feature for EJS https://github.com/RandomEtc/ejs-locals)
So, it is totally depend on you to pick whatever makes you comfortable. But if you are going to use another template engine fo...
django 1.5 - How to use variables inside static tag
...
I got this to work by using an empty string for the static path and then using my variables in their own section, like this:
<a href= "{% static "" %}{{obj.a}}/{{obj.b}}/{{obj.c}}.gz" >Name</a>
...