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Problems with contenttypes when loading a fixture in Django
... keys". For example:
Permission.codename is used in favour of Permission.id
User.username is used in favour of User.id
Read more: natural keys section in "serializing django objects"
Some other useful arguments for dumpdata:
--indent=4 make it human readable.
-e sessions exclude session data
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How can I return an empty IEnumerable?
...n the following code and the suggestions given in this question , I've decided to modify this original method and ask if there are any values in the IEnumarable return it, if not return an IEnumerable with no values.
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Change One Cell's Data in mysql
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My answer is repeating what others have said before, but I thought I'd add an example, using MySQL, only because the previous answers were a little bit cryptic to me.
The general form of the command you need to use to update a single row's column:
UPDATE my_table S...
Data Modeling with Kafka? Topics and Partitions
...o in the example above, I would just have a single topic and if you´ll decide to push some other kind of data through Kafka, you can add a new topic for that later.
Topics are registered in ZooKeeper which means that you might run into issues if trying to add too many of them, e.g. the case where ...
Programmatically change the src of an img tag
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Give your img tag an id, then you can
document.getElementById("imageid").src="../template/save.png";
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Can't start site in IIS (use by another process)
... or netstat -aon | findstr 0.0:80 in a command prompt to see which Process Id is LISTENING to port :80 and then watch for that Process Id (PID) in Task Manager with view->select columns-> process id checked. End that process, restart IIS and you are done. (Note: if you have Skype installed, tr...
Mongoose: Get full list of users
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Well, if you really want to return a mapping from _id to user, you could always do:
server.get('/usersList', function(req, res) {
User.find({}, function(err, users) {
var userMap = {};
users.forEach(function(user) {
userMap[user._id] = user;
});
res...
MySQL - Using COUNT(*) in the WHERE clause
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try this;
select gid
from `gd`
group by gid
having count(*) > 10
order by lastupdated desc
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How do you force Visual Studio to regenerate the .designer files for aspx/ascx files?
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This just worked for me too. Not ideal. No idea why the original desginer file stopped updating properly.
– Iain Holder
Oct 29 '08 at 10:16
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Shared-memory objects in multiprocessing
... wrap it with some kind of synchronization or locking. multiprocessing provides two methods of doing this: one using shared memory (suitable for simple values, arrays, or ctypes) or a Manager proxy, where one process holds the memory and a manager arbitrates access to it from other processes (even o...