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			36 lines
		
	
	
		
			1.0 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			36 lines
		
	
	
		
			1.0 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
| from django.db import models
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| 
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| 
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| class Author(models.Model):
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|     first_name = models.CharField(max_length=255)
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|     last_name = models.CharField(max_length=255)
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|     dob = models.DateField()
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| 
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|     def __init__(self, *args, **kwargs):
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|         super(Author, self).__init__(*args, **kwargs)
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|         # Protect against annotations being passed to __init__ --
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|         # this'll make the test suite get angry if annotations aren't
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|         # treated differently than fields.
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|         for k in kwargs:
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|             assert k in [f.attname for f in self._meta.fields], \
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|                 "Author.__init__ got an unexpected parameter: %s" % k
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| 
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| 
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| class Book(models.Model):
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|     title = models.CharField(max_length=255)
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|     author = models.ForeignKey(Author)
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|     paperback = models.BooleanField(default=False)
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|     opening_line = models.TextField()
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| 
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| 
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| class Coffee(models.Model):
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|     brand = models.CharField(max_length=255, db_column="name")
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| 
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| 
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| class Reviewer(models.Model):
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|     reviewed = models.ManyToManyField(Book)
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| 
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| 
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| class FriendlyAuthor(Author):
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|     pass
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