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			38 lines
		
	
	
		
			817 B
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			38 lines
		
	
	
		
			817 B
		
	
	
	
		
			Python
		
	
	
	
	
	
| """
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| Testing signals before/after saving and deleting.
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| """
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| from django.db import models
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| 
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| 
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| class Person(models.Model):
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|     first_name = models.CharField(max_length=20)
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|     last_name = models.CharField(max_length=20)
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| 
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|     def __str__(self):
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|         return "%s %s" % (self.first_name, self.last_name)
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| 
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| 
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| class Car(models.Model):
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|     make = models.CharField(max_length=20)
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|     model = models.CharField(max_length=20)
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| 
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| 
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| class Author(models.Model):
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|     name = models.CharField(max_length=20)
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| 
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|     def __str__(self):
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|         return self.name
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| 
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| 
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| class Book(models.Model):
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|     name = models.CharField(max_length=20)
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|     authors = models.ManyToManyField(Author)
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| 
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|     def __str__(self):
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|         return self.name
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| 
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| 
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| class Page(models.Model):
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|     book = models.ForeignKey(Book, on_delete=models.CASCADE)
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|     text = models.TextField()
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