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How to 'bulk update' with Django?
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Update:
Django 2.2 version now has a bulk_update.
Old answer:
Refer to the following django documentation section
Updating multiple objects at once
In short you should be able to use:
ModelClass.objects.filter(name='bar').update(name="foo")
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Embedding Base64 Images
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Update: 2017-01-10
Data URIs are now supported by all major browsers. IE supports embedding images since version 8 as well.
http://caniuse.com/#feat=datauri
Data URIs are now supported by the following web browsers:
Gecko-based, such as Firefox, S...
Best way for a 'forgot password' implementation? [closed]
...word.jsp page should be able to retrieve the ID parameter. Sorry, I don't know Java, so I can't be more specific.
When the user clicks the link in the email, he is moved to your page. The page retrieves the ID from the URL, hashes it again, and checks against the table. If such a record is there and...
How can you do anything useful without mutable state?
...lection and invoke the anonymous function for each item. Very handy :)
I know, printing numbers isn't exactly impressive. However, we can use the same approach with games: hold all state in the stack and create a new object with our changes in the recursive call. In this way, each frame is a statel...
Is there a way that I can check if a data attribute exists?
... been set with the .data() method, e.g. $('#dataTable').data('timer', Date.now()). It seems the OP wants to check that the actual data attribute is there. @niiru's solution (or the one you offer in a comment to that solution) is better, in this case.
– Noyo
Dec...
Java String remove all non numeric characters
...de:
String str = "a12.334tyz.78x";
str = str.replaceAll("[^\\d.]", "");
Now str will contain "12.334.78".
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Cancel split window in Vim
I have split my windows horizontally. Now how can I return to normal mode, i.e. no split window just one window without cancelling all of my open windows. I have 5 and do not want to "quit", just want to get out of split window.
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Type of conditional expression cannot be determined because there is no implicit conversion between
...ain conversions are possible, which we will get into the details of below.
Now, let's turn to the germane part of the spec:
If only one of x and y has a type, and both x and y are implicitly convertible to that type, then that is the type of the conditional expression.
The issue here is that in
in...
What is a difference between
... arrays are what we call reifiable types. This means that at runtime Java knows that this array was actually instantiated as an array of integers which simply happens to be accessed through a reference of type Number[].
So, as you can see, one thing is the actual type of the object, and another thin...
How do I format XML in Notepad++?
...error when trying to use this plugin, try XML Tools -> Check XML syntax now. I had an issue where the encoding was specified as UTF-16 but was actually UTF-8. Changing the encoding attribute in the XML file fixed the problem.
– Mirza Dobric
Jul 20 '12 at 1...