64 lines
2.0 KiB
Python
64 lines
2.0 KiB
Python
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from django.db import models
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class Venue(models.Model):
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id = models.BigIntegerField(primary_key=True)
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name = models.CharField(max_length=255, db_index=True)
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def __str__(self):
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return self.name
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class Institution(models.Model):
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id = models.BigIntegerField(primary_key=True)
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name = models.CharField(max_length=255, db_index=True)
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def __str__(self):
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return self.name
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class Field(models.Model):
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id = models.BigIntegerField(primary_key=True)
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name = models.CharField(max_length=255, unique=True)
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def __str__(self):
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return self.name
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class Author(models.Model):
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id = models.BigIntegerField(primary_key=True)
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name = models.CharField(max_length=255, db_index=True)
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institution = models.ForeignKey(Institution, on_delete=models.SET_NULL, null=True)
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n_citation = models.IntegerField(default=0)
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def __str__(self):
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return self.name
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class Paper(models.Model):
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id = models.BigIntegerField(primary_key=True)
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title = models.CharField(max_length=255, db_index=True)
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authors = models.ManyToManyField(Author, related_name='papers', through='Writes')
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venue = models.ForeignKey(Venue, on_delete=models.SET_NULL, null=True)
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year = models.IntegerField()
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abstract = models.CharField(max_length=4095)
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fos = models.ManyToManyField(Field)
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references = models.ManyToManyField('self', related_name='citations', symmetrical=False)
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n_citation = models.IntegerField(default=0)
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def __str__(self):
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return self.title
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class Writes(models.Model):
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author = models.ForeignKey(Author, on_delete=models.CASCADE)
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paper = models.ForeignKey(Paper, on_delete=models.CASCADE)
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order = models.IntegerField(default=1)
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class Meta:
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constraints = [models.UniqueConstraint(fields=['author', 'paper'], name='unique_writes')]
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ordering = ['paper_id', 'order']
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def __str__(self):
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return f'(author_id={self.author_id}, paper_id={self.paper_id}, order={self.order})'
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