Initial commit

backend_legacy/backend/models.py

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+from django.db import models
+from pygments.lexers import get_all_lexers
+from pygments.styles import get_all_styles
+from pygments.lexers import get_lexer_by_name
+from pygments.formatters.html import HtmlFormatter
+from pygments import highlight
+
+LEXERS = [item for item in get_all_lexers() if item[1]]
+LANGUAGE_CHOICES = sorted([(item[1][0], item[0]) for item in LEXERS])
+STYLE_CHOICES = sorted([(item, item) for item in get_all_styles()])
+ACCESS_TYPES = (("public", "Public"), ("private", "Private"), ("owner-only", "Owner only"))
+
+
+class Snippet(models.Model):
+    created = models.DateTimeField(auto_now_add=True)
+    title = models.CharField(max_length=100, blank=True, default='')
+    content = models.TextField()
+    linenos = models.BooleanField(default=False)
+    language = models.CharField(choices=LANGUAGE_CHOICES, default='python', max_length=100)
+    style = models.CharField(choices=STYLE_CHOICES, default='friendly', max_length=100)
+    highlighted = models.TextField()
+    owner = models.ForeignKey(
+        verbose_name="Snippet owner",
+        to="auth.User",
+        on_delete=models.CASCADE
+    )
+    access = models.CharField(
+        verbose_name="Access type",
+        choices=ACCESS_TYPES,
+        default="private",
+        max_length=20
+    )
+
+    def save(self, *args, **kwargs):
+        """
+        Use the `pygments` library to create a highlighted HTML
+        representation of the code snippet.
+        """
+        lexer = get_lexer_by_name(self.language)
+        linenos = 'table' if self.linenos else False
+        options = {'title': self.title} if self.title else {}
+        formatter = HtmlFormatter(
+            style=self.style,
+            linenos=linenos,
+            full=True,
+            **options
+        )
+        self.highlighted = highlight(self.content, lexer, formatter)
+        super().save(*args, **kwargs)
+
+    class Meta:
+        ordering = ['created']
+
+
+class SnippetParticipant(models.Model):
+    id = models.IntegerField(
+        verbose_name="ID",
+        primary_key=True
+    )
+    user = models.ForeignKey(
+        verbose_name="Associated User",
+        to="auth.User",
+        on_delete=models.CASCADE
+    )
+    snippet = models.ForeignKey(
+        verbose_name="Associated Snippet",
+        to=Snippet,
+        on_delete=models.CASCADE
+    )