Adding Foreign Key to Django Import Export - django

Question

I am trying to import data from a csv using Django_Import Export. I saw other SO posts but they are not helping. Below are the models
Models.py
class TblSubject(amdl.AagamBaseModel):
subject_id = models.AutoField(primary_key=True)
subject_name = models.CharField(max_length=20)
standard = models.ForeignKey('TblStandard', models.DO_NOTHING)
remembrance_credit = models.IntegerField(default=40)
applied_knowledge_credit = models.IntegerField(default=30)
understanding_credit = models.IntegerField(default=30)
subject_credit = models.IntegerField(default=100)
class Meta:
db_table = 'tblsubject'
def __str__(self):
return f'{self.subject_name}'
class SubjectChapter(amdl.AagamBaseModel):
subject_chapter_id = models.AutoField(primary_key=True)
subject = models.ForeignKey('TblSubject', on_delete=models.CASCADE)
chapter_id = models.IntegerField()
chapter_name = models.CharField(max_length=150)
remembrance_credit = models.IntegerField()
applied_knowledge_credit = models.IntegerField()
understanding_credit = models.IntegerField()
chapter_credit = models.IntegerField()
class Meta:
db_table = 'subject_chapter'
def __str__(self):
return f'{self.chapter_id} {self.chapter_name} : {self.subject}'
Here is the admin.py
from django.contrib import admin
from import_export import resources, fields
from import_export.widgets import ForeignKeyWidget
from .models import SubjectChapter, TblSubject
from import_export.admin import ImportExportModelAdmin
class SubjectChapterResource(resources.ModelResource):
class Meta:
model = SubjectChapter
import_id_fields = ('subject_chapter_id',)
subject = fields.Field(
column_name='subject_name',
attribute='subject_name',
widget=ForeignKeyWidget(TblSubject, 'subject_id'))
class SubjectChapterAdmin(ImportExportModelAdmin):
resource_class = SubjectChapterResource
admin.site.register(SubjectChapter, SubjectChapterAdmin)
And i am getting this below error
I am inserting data for SUBJECTCHAPTER from csv where the SUBJECT column is a foreign key from TBLSUBJECT and it contains the name of the TBLSUBJECT.

Answer 1

Change this
class SubjectChapterResource(resources.ModelResource):
class Meta:
model = SubjectChapter
import_id_fields = ('subject_chapter_id',)
subject = fields.Field(
column_name='subject_name',
attribute='subject_name',
widget=ForeignKeyWidget(TblSubject, 'subject_name'))
From subject_id to subject_name