Mine

class CV(models.Model):
    user = models.OneToOneField(User)
    summary = models.CharField(max_length=500)                                                           

class Experience(models.Model):                                                                          
    cv = models.ForeignKey(CV)

class Skill(models.Model):
    cv = models.ForeignKey(CV)

class ExperienceSkill(models.Model):
    experience = models.ForeignKey(Experience)
    skill = models.ForeignKey(Skill)



class ExperienceInline(admin.TabularInline):
    model = Experience
    
class SkillInline(admin.TabularInline):
    model = Skill 
        
class ExperienceSkillInline(admin.TabularInline):
    model = ExperienceSkill

class CVAdmin(ModerationAdmin):
    inlines = [
        ExperienceInline,
        SkillInline,
        ExperienceSkillInline,                                                                           
    ]