Adds in some additional validators for a nicer error message

src/paperless/migrations/0001_initial.py

@@ -50,8 +50,10 @@ class Migration(migrations.Migration):
                 (
                     "pages",
                     models.PositiveIntegerField(
-                        blank=True,
                         null=True,
+                        validators=[
+                            django.core.validators.MinValueValidator(1),
+                        ],
                         verbose_name="Do OCR from page 1 to this value",
                     ),
                 ),
@@ -97,6 +99,9 @@ class Migration(migrations.Migration):
                     "image_dpi",
                     models.PositiveIntegerField(
                         null=True,
+                        validators=[
+                            django.core.validators.MinValueValidator(1),
+                        ],
                         verbose_name="Sets image DPI fallback value",
                     ),
                 ),

src/paperless/models.py

@@ -93,7 +93,7 @@ class ApplicationConfiguration(AbstractSingletonModel):
     pages = models.PositiveIntegerField(
         verbose_name=_("Do OCR from page 1 to this value"),
         null=True,
-        blank=True,
+        validators=[MinValueValidator(1)],
     )
 
     language = models.CharField(
@@ -122,6 +122,7 @@ class ApplicationConfiguration(AbstractSingletonModel):
     image_dpi = models.PositiveIntegerField(
         verbose_name=_("Sets image DPI fallback value"),
         null=True,
+        validators=[MinValueValidator(1)],
     )
 
     # Can't call it clean, that's a model method