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Can I make the foreign key field optional in Django model
...allow a field to be blank in your form, you're going to also need your database to allow NULL values for that field. The exception is CharFields and TextFields, which in Django are never saved as NULL. Blank values are stored in the DB as an empty string ('').
– fang_dejavu
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Query a parameter (postgresql.conf setting) like “max_connections”
Does anyone know if it's even possible (and how, if yes) to query a database server setting in PostgreSQL (9.1)?
1 Answer
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moveCamera with CameraUpdateFactory.newLatLngBounds crashes
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Can you show how to calculate it based on the screen size?
– Daniel Gomez Rico
Jun 23 '15 at 3:12
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setup cron tab to specific time of during weekdays
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Path.Combine absolute with relative path strings
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What Works:
string relativePath = "..\\bling.txt";
string baseDirectory = "C:\\blah\\";
string absolutePath = Path.GetFullPath(baseDirectory + relativePath);
(result: absolutePath="C:\bling.txt")
What doesn't work
string relativePath = "..\\bling.txt";
Uri baseAbsoluteUri = new...
Is it possible to determine whether ViewController is presented as Modal?
...to use other UIKit controllers, as UITableViewController for example) in a base controller that my other controllers inherit of
-(BOOL)isModal {
BOOL isModal = ((self.parentViewController && self.parentViewController.modalViewController == self) ||
//or if I have a naviga...
ggplot: How to increase spacing between faceted plots?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to spread django unit tests over multiple files?
...and run that suite.
From Django 1.6 documentation,
Test discovery is based on the unittest module’s built-in test
discovery. By default, this will discover tests in any file named
“test*.py” under the current working directory.
Previous behavior, from Django 1.5 documentation:
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How do I search an SQL Server database for a string?
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This will search every column of every table in a specific database. Create the stored procedure on the database that you want to search in.
The Ten Most Asked SQL Server Questions And Their Answers:
CREATE PROCEDURE FindMyData_String
@DataToFind NVARCHAR(4000),
@ExactMatch BIT...
Has an event handler already been added?
... serializing a list of objects into/out of session state so we can use SQL based session state... When an object in the list has a property changed it needs to be flagged, which the event handler took care of properly before. However now when the objects are deserialized it isn't getting the event ...