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I've been stuck on this for a few days (new to django) and can't figure out how to update skills for a specific user model using a ManyToManyField, while simultaneously updating a skill model containing a list of skills. Currently when I enter a value in my SkillForm, it updates the skill model properly and creates a dropdown list of skills for a given CustomUser in the admin. However, I can't figure out how to assign a SPECIFIC skill to a particular user. Any help is appreciated.

models.py:

class Skill(models.Model):
 name = models.CharField(max_length =50, null=True, default='')

 def __str__(self):
 return self.name 


class CustomUserManager(UserManager):
 pass

class CustomUser(AbstractUser):
 objects = CustomUserManager()
 skills = models.ManyToManyField(Skill, null=True, blank=True)
 position = models.CharField(max_length =50, null=True, default='')
 bio = models.CharField(max_length=300, null=True, default='')

admin.py:

class SkillsInline(admin.StackedInline):
 model = CustomUser.skills.through

class SkillAdmin(admin.ModelAdmin):
 inlines = [SkillsInline ,]

UserAdmin.fieldsets += ('Custom fields set', 'fields': ('position', 'bio', )),

class CustomUserAdmin(UserAdmin):
 model = CustomUser
 add_form = CustomUserCreationForm
 form = EditProfile
 inlines = [SkillsInline ,]

admin.site.register(CustomUser, CustomUserAdmin)

forms.py:

class SkillForm(forms.ModelForm):
 name = forms.CharField()

 class Meta:
 model = Skill
 fields =('name' ,)

 def clean(self):
 cleaned_data = super().clean()
 name = cleaned_data.get('name')

I see somes problem here :

class CustomUser(AbstractUser):
 objects = CustomUserManager()
 skills = models.ManyToManyField(Skill, null=True, blank=True)
 position = models.CharField(max_length =50, null=True, default='')
 bio = models.CharField(max_length=300, null=True, default='')

When you define an AbstractUser` class, it's mean for Django Authentification purpose, see the doc here., dont do that because it's better to have an unique entry (each user have an unique entry, so you can login each one).

In your system you dont have unique CustomUser, here is a solution IMO:

class User(AbstractUser):
 email = models.EmailField(_('email'), unique=True)

class UserAction(models.Model):
 objects = CustomUserManager()
 user = models.ForeignKey(User, verbose_name="User")
 skills = models.ManyToManyField(Skill, null=True, blank=True)
 position = models.CharField(max_length =50, null=True, default='')
 bio = models.CharField(max_length=300, null=True, default='')

class Skill(models.Model):
 name = models.CharField(max_length =50, null=True, default='')

 def __str__(self):
 return self.name 

You now have an unique User, a list of UserAction that have a related Skill

user = User.objects.create(email='my@email.com')
skill = Skill.objects.create(name="shadow step")
user_action = UserAction.objects.create(user=user, skill=skill, position='HERE', bio='10')

Is that what you needed ?