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Can I make the foreign key field optional in Django model
... answered Jul 8 '11 at 4:58
Abid AAbid A
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Query a parameter (postgresql.conf setting) like “max_connections”
...ings:
SHOW ALL;
There is also pg_settings:
The view pg_settings provides access to run-time parameters of the
server. It is essentially an alternative interface to the SHOW and
SET commands. It also provides access to some facts about each
parameter that are not directly available from ...
setup cron tab to specific time of during weekdays
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Same as you did for hours:
*/2 09-18 * * 1-5 /path_to_script
0 and 7 stand for Sunday
6 stands for Saturday
so, 1-5 means from Monday to Friday
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Case insensitive regex in JavaScript
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ggplot: How to increase spacing between faceted plots?
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Use the theme function:
library(grid)
p + theme(panel.spacing = unit(2, "lines"))
See also here: Slicing plots generated by ggplot2
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How to return an NSMutableArray from an NSSet
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Get name of current class?
... I need to create and initialize a class variable, 'input', outside of a method. I have a bunch of small classes, each which must call 'get_input' using their class name as the parameter. I am trying to generalize this so I don't have to go to each class (there will be 100 or so) and ty...
Assign variables to child template in {% include %} tag Django
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Visual Studio Clicking Find Results Opens Code in Wrong Window
... This solution usually fixes it for me quickly. However, one instance, it didn't work first time but worked after restarting VS.
– John Lee
Feb 9 '17 at 15:26
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What is choice_set in this Django app tutorial?
... the same model and need to distinguish them, you can choose your own overriding name using the related_name argument to ForeignKey.
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