Django - Signals
Which of the following is the correct way to connect a
pre_delete signal to a model named Book?Which of the following is the correct way to connect a pre_delete signal to a model named Book?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Recall signal connection syntax
In Django, signals are connected usingsignal.connect(handler, sender=Model).Step 2: Apply to
Usepre_deleteandBookpre_delete.connect(my_handler, sender=Book)to connect the handler to theBookmodel.Final Answer:
pre_delete.connect(my_handler, sender=Book) -> Option CQuick Check:
Correct connect syntax = pre_delete.connect(my_handler, sender=Book) [OK]
Quick Trick: Use signal.connect(handler, sender=Model) to connect signals [OK]
Common Mistakes:
MISTAKES- Using post_delete instead of pre_delete
- Trying to call connect on the model itself
- Incorrect argument order in connect
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