Force lowercase for language option in newspaper

apps/rp/models/article.py

@@ -14,6 +14,12 @@ STATUS_CHOICES = (
     ("REJECTED", _("Rejected"))
 )
 
+LANG_CHOICES = (
+    ("FR", _("French")),
+    ("EN", _("English")),
+    ("NA", _("Other"))
+)
+
 URL_HELP_TEXT = """The URL should not contain any marketing tags. We
 automatically strip the most known tags."""
 
@@ -27,7 +33,8 @@ article content. You should aim at around 500 characters. Use bracket ellipsis
 
 class Article(VoteMixin):
     url = models.URLField("URL", help_text=URL_HELP_TEXT)
-    lang = models.CharField(_("Language"), max_length=50, null=True)
+    lang = models.CharField(
+        _("Language"), choices=LANG_CHOICES, default="NA", max_length=50)
     metadata = models.TextField(
         _("Opengraph metadata"), blank=True, null=True)
     screenshot = models.ImageField(
@@ -72,7 +79,8 @@ class Article(VoteMixin):
         self.save()
 
     def parse(self):
-        article = ArticleParser(url=self.url, language=self.lang)
+        lang_lower = self.lang.lower() if self.lang != "NA" else None
+        article = ArticleParser(url=self.url, language=lang_lower)
         article.download()
         article.parse()
         self.title = article.title