[Answered ]-Dehydrate the same field django

To export both Student.name and Student.lastname you can directly reference a Foreign Key relation in the fields parameter (docs):

class ClassResource(resources.ModelResource):

    class Meta:
        model = Class
        fields = ('student__name', 'student__lastname')

This means that the column names will appear in your export as:

• student__name
• student__lastname

If you want the name to be different, you can directly declare a field:

    name = Field(
        column_name='name',
        attribute='name',
        widget=ForeignKeyWidget(Student, 'name'))

This will then appear in the export under name.