Show name for model print.

beer/models.py

@@ -50,9 +50,15 @@ class Unit(CustomModel):
     name = models.CharField(max_length=50)
     unit_type = models.CharField(max_length=3, choices=unit_types, default='WT')
 
+    def __str__(self):
+        return self.name
+
 class Supplier(CustomModel):
     name = models.CharField(max_length=50)
 
+    def __str__(self):
+        return self.name
+
 class CustomIngredient(CustomModel):
     """ Custom model class with default fields to use. """
     created_date = models.DateTimeField(default=timezone.now)
@@ -171,6 +177,9 @@ class RecipeMisc(CustomModel):
     misc = models.ForeignKey(Misc, on_delete=models.CASCADE)
     quantity = models.DecimalField(max_digits=6, decimal_places=4)
 
+    def __str__(self):
+        return self.name
+
 class RecipeYeast(CustomModel):
     recipe = models.ForeignKey(BatchRecipe, on_delete=models.CASCADE)
     yeast = models.ForeignKey('yeast.Strain', on_delete=models.CASCADE)