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Code First: Independent associations vs. Foreign key associations?
...ations were allowed.
Entity framework v4 offers a new type of association called Foreign key association. The most obvious difference between the independent and the foreign key association is in Order class:
public class Order
{
public int ID { get; set; }
public int CustomerId { get; set...
How do I add custom field to Python log format string?
... LoggerAdapter so you don't have to pass the extra info with every logging call:
import logging
extra = {'app_name':'Super App'}
logger = logging.getLogger(__name__)
syslog = logging.StreamHandler()
formatter = logging.Formatter('%(asctime)s %(app_name)s : %(message)s')
syslog.setFormatter(formatt...
jQuery: How to capture the TAB keypress within a Textbox
I want to capture the TAB keypress, cancel the default action and call my own javascript function.
9 Answers
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ASP.NET MVC Html.ValidationSummary(true) does not display model errors
...error you're adding has the key 'error' so it will not display in when you call ValidationSummary(true). You need to add your custom error message with an empty key like this:
ModelState.AddModelError(string.Empty, ex.Message);
...
print memory address of Python variable [duplicate]
...s the actual memory address of the variable. If you want it in hex format, call hex() on it.
x = 5
print hex(id(x))
this will print the memory address of x.
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What's the best way to send a signal to all members of a process group?
...grep -o [0-9]*) is the best simple trick to kill a whole process tree when called from a different Group ID (another process tree).
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Is this the right way to clean-up Fragment back stack when leaving a deeply nested stack?
...) is async, meaning the clearing up does not occur at the exact moment you call the method.
– Genc
Sep 5 '16 at 10:15
6
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jQuery: serialize() form and other parameters
...n (in hidden fields if necessary) so that it can be serialised in a single call. This way if JS is disabled or fails, the form submission should still have a failsafe and include all data when sent.
– Rory McCrossan
Oct 15 '16 at 12:12
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Create Django model or update if exists
...o update the user object.
Sample use is as follows:
# In both cases, the call will get a person object with matching
# identifier or create one if none exists; if a person is created,
# it will be created with name equal to the value in `name`.
# In this case, if the Person already exists, its ex...
Android notification doesn't disappear after clicking the notifcation
...user dismisses the notification.
The user clicks the notification, and you called setAutoCancel() when you created the notification.
You call cancel() for a specific notification ID. This method also deletes ongoing notifications.
You call cancelAll(), which removes all of the notifications you ...