How to show the full name in a ManyToManyField with choices (tuples)?

Question

I have a simple model like this

class UserType( models.Model ) :
    def __unicode__( self ) :
        return self.name

    TYPE_CHOICES = (
        ( 'ad', 'administrator'    ),
        ( 'mo', 'moderator'        ),
        ( 'vi', 'viewer'           ),
        ( 'pm', 'property manager' ),
        ( 'po', 'property owner'   ),
        ( 'vm', 'vendor manager'   ),
        ( 've', 'vendor'           ),
        ( 'te', 'tenant'           ),
    )

    name = models.CharField( max_length = 2, choices = TYPE_CHOICES )

In the admins.py, I set filter_horizontal = ( 'user_types', ) for UserProfile, which has a ManyToManyField to UserType. But in the UserProfile admin page, the horizontal filter for M2M only shows the short-name of the tuple:

Also in a template, I want to show a list of user types a particular user has. So my template code looks like this

User type:
<ul>
    {% if user_object.profile.user_types.all %}
        {% for user_type in user_object.profile.user_types.all %}
            <li>{{ user_type|capfirst }}</li>
        {% endfor %}
    {% else %}
        <li>No user type</li>
    {% endif %}
</ul>

And on the template, it displays only the short-name. I know normally I could show it the long-name by doing something like {{ get_user_type_display }}, but in this case for M2M, it doesn't work.

So my question is two-fold:

1. How do I display the long-name of a M2M choice/tuple in the admin page?
2. How do I display the long-name in a M2M choice/tuple in a template?

Answer 1

Try the following:

class UserType( models.Model ) :
    TYPE_CHOICES = (
        ( 'ad', 'administrator'    ),
        ( 'mo', 'moderator'        ),
        ( 'vi', 'viewer'           ),
        ( 'pm', 'property manager' ),
        ( 'po', 'property owner'   ),
        ( 'vm', 'vendor manager'   ),
        ( 've', 'vendor'           ),
        ( 'te', 'tenant'           ),
        )
    STR_CHOICES = { key : value for (key,value) in TYPE_CHOICES }

    name = models.CharField( max_length = 2, choices = TYPE_CHOICES )

    def __str__(self):
        return self.STR_CHOICES[self.name]

Answer 2

Astevanovic's answer was really helpful for me. There is something I want to add to this.

If you have a model in the field manytomanyfield ... If you have uploaded all other models from this area in the template ... You will no longer be calling human readable names get_ choices _display.

It is enough to call this with the name which is the return.

So now only in the template {{usertype}}