```py
from django.db import models


class TrimCharField(models.CharField):
    """CharField that ignores leading and trailing spaces in data"""

    def get_prep_value(self, value):
        original_value = super(TrimCharField, self).get_prep_value(value)
        if original_value:
            return original_value.strip()

    def pre_save(self, model_instance, add):
        original_value = super(TrimCharField, self).pre_save(model_instance, add)
        if original_value:
            return original_value.strip()
```

A CharField that ignores leading and trailing spaces in data

Django TrimCharField

Python, Django