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Default value for field in Django model
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Set editable to False and default to your default value.
http://docs.djangoproject.com/en/stable/ref/models/fields/#editable
b = models.CharField(max_length=7, default='0000000', editable=False)
Also, your id field is unnecessary. Django will...
What was the strangest coding standard rule that you were forced to follow? [closed]
...this question I got almost always a definite yes you should have coding standards.
112 Answers
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How do I copy a hash in Ruby?
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The clone method is Ruby's standard, built-in way to do a shallow-copy:
irb(main):003:0> h0 = {"John" => "Adams", "Thomas" => "Jefferson"}
=> {"John"=>"Adams", "Thomas"=>"Jefferson"}
irb(main):004:0> h1 = h0.clone
=> {"John"=>...
How to reference a file for variables using Bash?
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The short answer
Use the source command.
An example using source
For example:
config.sh
#!/usr/bin/env bash
production="liveschool_joe"
playschool="playschool_joe"
echo $playschool
script.sh
#!/usr/bin/env bash
source config.sh
echo $production
Note ...
Add and remove multiple classes in jQuery
I'm trying to add and remove multiple classes on a text field by clicking different radio buttons. I'm not able to remove the unwanted classes while switching between different radio buttons.
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How do I uniquely identify computers visiting my web site?
...wsers
are subject to “device fingerprinting” via the version and configuration information that they will transmit to websites upon request. We
implemented one possible fingerprinting algorithm, and collected these
fingerprints from a large sample of browsers that visited our test...
Bring a window to the front in WPF
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myWindow.Activate();
Attempts to bring the window to the foreground and activates it.
That should do the trick, unless I misunderstood and you want Always on Top behavior. In that case you want:
myWindow.TopMost = true;
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Design RESTful query API with a long list of query parameters [closed]
...or this is GET. The only problem is, it can have at least a dozen filters, and if we pass all of them as query parameters, the URL can get quite long (long enough to be blocked by some firewall).
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How to set date format in HTML date input tag?
... displays in is (generally speaking) the correct one for the user's locale and the format that the user is used to writing/understanding dates in.
If you mean the format in which it's transmitted to the server, you're trying to fix the wrong problem. What you need to do is program the server-side ...
Create Windows service from executable
...xecutable>"
You must have quotation marks around the actual exe path, and a space after the binPath=.
More information on the sc command can be found in Microsoft KB251192.
Note that it will not work for just any executable: the executable must be a Windows Service (i.e. implement ServiceMai...