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How do I clone a Django model instance object and save it to the database?
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Just change the primary key of your object and run save().
obj = Foo.objects.get(pk=<some_existing_pk>)
obj.pk = None
obj.save()
If you want auto-generated key, set the new key to None.
More on UPDATE/INSERT here.
Official docs on copying...
How do I detect “shift+enter” and generate a new line in Textarea?
...olution:
Tim's solution below is better I suggest using that:
https://stackoverflow.com/a/6015906/4031815
My solution
I think you can do something like this..
EDIT : Changed the code to work irrespective of the caret postion
First part of the code is to get the caret position.
Ref: How to...
The most accurate way to check JS object's type?
... answered Oct 25 '11 at 18:50
kmathenykmatheny
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How to check whether a given string is valid JSON in Java
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Vadzim
19.8k99 gold badges114114 silver badges137137 bronze badges
answered Apr 16 '12 at 13:19
MByDMByD
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How to list the contents of a package using YUM?
I know how to use rpm to list the contents of a package ( rpm -qpil package.rpm ). However, this requires knowing the location of the .rpm file on the filesystem. A more elegant solution would be to use the package manager, which in my case is YUM. How can YUM be used to achieve this?
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How do I do a not equal in Django queryset filtering?
... I've never used them but it seems they can be negated and combined much like normal python expressions.
Update: I Just tried it out, it seems to work pretty well:
>>> from myapp.models import Entry
>>> from django.db.models import Q
>>> Entry.objects.filter(~Q(id = 3))
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PDO mysql: How to know if insert was successful
...e on success. There is also PDOStatement->errorCode() which you can check for errors.
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How to output in CLI during execution of PHP Unit tests?
When running a PHPUnit test, I would like to be able to dump output so I can debug one or two things.
17 Answers
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Javascript - Track mouse position
I am hoping to track the position of the mouse cursor, periodically every t mseconds. So essentially, when a page loads - this tracker should start and for (say) every 100 ms, I should get the new value of posX and posY and print it out in the form.
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Simple insecure two-way data “obfuscation”?
I'm looking for very simple obfuscation (like encrypt and decrypt but not necessarily secure) functionality for some data. It's not mission critical. I need something to keep honest people honest, but something a little stronger than ROT13 or Base64 .
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