Django help| Urgent | how to find the frequency of a string for each word using django admin?

[DJANGO DEVELOPER]

let suppose I have 2 models:

class String(models.model):

    string = models.textarea(null = True, blank = True)

    user = models.ForeignKey(user, on_delete=models.CASCADE)

    def __str__(self):

        return self.string

and

class Song_Words_Count(models.model):

    song = models.ForeignKey(user, on_delete=models.SET_NULL)

    def __str__(self):

        return self.song

now what I want to do at django admin side that the string added in "String" model should be saved in Song_Wors_count model and string should be splitted in a single word and frequency should be counted this way:

word word_freq

word1 10

word2 15

word3 20

I need Urgent help please.

[DJANGO DEVELOPER]

is there anyone who can help me here?

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[Peter van der Does]

Overwrite the save method on the String model and when you hit save you split and save the words in the S_W_C model. This does mean when you update the String record all the words are added to the S_W_C model as well, as there is no correlation between the two model you don't know if that String was already counted.

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Peter van der Does
o: 410-584-2500

m: 732-425-3102

ONeil Interactive, Inc 

oneilinteractive.com

[Tech Cue]

 class String(models.model):

    string = models.textarea(null = True, blank = True)

    user = models.ForeignKey(user, on_delete=models.CASCADE)

    def __str__(self):

        return self.string

class Song_Words_Count(models.model):

    song = models.ForeignKey(user, on_delete=models.SET_NULL)

 

 

    def __str__(self):

        return self.song

https://docs.djangoproject.com/en/3.2/topics/db/queries/

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[Sebastian Jung]

Hello Peter,

ich would make it with a signal.

Here a another example to use a post save signal:

from django.db.models.signals import post_save
from django.dispatch import receiver

class TransactionDetail(models.Model):
    product = models.ForeignKey(Product)

# method for updating
@receiver(post_save, sender=TransactionDetail, dispatch_uid="update_stock_count")
def update_stock(sender, instance, **kwargs):
    instance.product.stock -= instance.amount
    instance.product.save()

Please write me if you don't understand these example.

P.S. i have no idea why you have a foreignkey relation. Why you save words not in another column in String class?

Regards

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[DJANGO DEVELOPER]

Hi Peter, thanks for your reply. Sorry I have m2m relationship of User model with Song model and I am using m2m_changes signal for it but still not giving me the desired output.

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[DJANGO DEVELOPER]

hi Sebastian, do you know how can I resolve my problem? I want to count same words in a string. after splitting it

[Tree Chip Net]

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