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I have a Person
model that has a foreign key relationship to Book
, which has a number of fields, but I"m most concerned about author
(a standard CharField).
With that being said, in my PersonAdmin
model, I"d like to display book.author
using list_display
:
class PersonAdmin(admin.ModelAdmin):
list_display = ["book.author",]
I"ve tried all of the obvious methods for doing so, but nothing seems to work.
Any suggestions?
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Can "list_display" in a Django ModelAdmin display attributes of ForeignKey fields? __del__: Questions
How can I make a time delay in Python?
5 answers
I would like to know how to put a time delay in a Python script.
Answer #1
import time
time.sleep(5) # Delays for 5 seconds. You can also use a float value.
Here is another example where something is run approximately once a minute:
import time
while True:
print("This prints once a minute.")
time.sleep(60) # Delay for 1 minute (60 seconds).
Answer #2
You can use the sleep()
function in the time
module. It can take a float argument for sub-second resolution.
from time import sleep
sleep(0.1) # Time in seconds
Can "list_display" in a Django ModelAdmin display attributes of ForeignKey fields? __del__: Questions
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5 answers
How do I delete a file or folder in Python?
Answer #1
os.remove()
removes a file.os.rmdir()
removes an empty directory.shutil.rmtree()
deletes a directory and all its contents.
Path
objects from the Python 3.4+ pathlib
module also expose these instance methods:
pathlib.Path.unlink()
removes a file or symbolic link.pathlib.Path.rmdir()
removes an empty directory.
We hope this article has helped you to resolve the problem. Apart from Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields?, check other __del__-related topics.
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Rome | 2023-03-24
Simply put and clear. Thank you for sharing. Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields? and other issues with __del__ was always my weak point 😁. Checked yesterday, it works!
Warsaw | 2023-03-24
Maybe there are another answers? What Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields? exactly means?. I am just not quite sure it is the best method
Singapore | 2023-03-24
I was preparing for my coding interview, thanks for clarifying this - Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields? in Python is not the simplest one. Will use it in my bachelor thesis