Why doesn”t django”s model.save() call full_clean()?

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I"m just curious if anyone knows if there"s good reason why django"s orm doesn"t call "full_clean" on a model unless it is being saved as part of a model form.

Note that full_clean() will not be called automatically when you call your model’s save() method. You’ll need to call it manually when you want to run one-step model validation for your own manually created models. django"s full clean doc

(NOTE: quote updated for Django 1.6... previous django docs had a caveat about ModelForms as well.)

Are there good reasons why people wouldn"t want this behavior? I"d think if you took the time to add validation to a model, you"d want that validation run every time the model is saved.

I know how to get everything to work properly, I"m just looking for an explanation.

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Why doesn"t django"s model.save() call full_clean()? __del__: Questions

import time
time.sleep(5)   # Delays for 5 seconds. You can also use a float value.

import time
while True:
    print("This prints once a minute.")
    time.sleep(60) # Delay for 1 minute (60 seconds).

from time import sleep
sleep(0.1) # Time in seconds

Why doesn"t django"s model.save() call full_clean()? __del__: Questions

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