How to make admin duplicate action for an object with all related foreign key and one-to-one fields?

[Alibek Khojabekov]

Hello everyone,

I am bit confused about making duplicate of a Course object in admin actions with all related child objects.  So my Models are:

class Course(models.Model):

PROGRAMMING = 1

DESIGN = 2

ROBOTICS = 3

DIGITAL_LITERACY = 4

IT_ENTREPRENEURSHIP = 5

CATEGORY_CHOICES = (

(PROGRAMMING, 'Программирование, IT предпринимательство'),

(DESIGN, 'Компьютерная графика и медиа'),

(ROBOTICS, 'Робототехника и электроника'),

(DIGITAL_LITERACY, 'Компьютерная грамотность'),

)

NEW = 1

PROGRESS = 2

READY = 3

STATUS_CHOICES = (

(NEW, 'Новый'),

(PROGRESS, 'В прогрессе'),

(READY, 'Готово'),

)

class Meta:

ordering = ['pk']

course_type = models.ForeignKey(

Category, related_name='courses', on_delete=models.SET_NULL, blank=True, null=True, db_index=True)

name = models.CharField(max_length=120, db_index=True)

short_description = models.TextField(blank=True, null=True)

description = models.TextField(blank=True, null=True)

image = models.FileField(upload_to=upload_path, null=True, blank=True)

icon = models.FileField(upload_to=upload_path, null=True, blank=True)

video_link = models.URLField(max_length=200, null=True, blank=True)

target_audience = models.TextField(blank=True, null=True)

price = models.DecimalField(max_digits=8, decimal_places=2, default=0.00, validators=[

MinValueValidator(Decimal('0.00'))], blank=True)

author = models.ForeignKey(

'users.User', default=1, on_delete=models.SET_NULL, null=True)

language = models.CharField(

max_length=3, choices=settings.LANGUAGES, default='ru', db_index=True)

category = models.PositiveSmallIntegerField(

choices=CATEGORY_CHOICES, default=PROGRAMMING, db_index=True)

robotics_kit = models.ForeignKey(

RoboticsKit, related_name='courses', on_delete=models.SET_NULL, blank=True, null=True)

course_class = models.ManyToManyField(

CourseClass, related_name='courses')

status = models.PositiveSmallIntegerField(

choices=STATUS_CHOICES, default=NEW, blank=True)

order_list = models.CharField(max_length=500, validators=[

int_list_validator], blank=True, null=True)

created_date = models.DateTimeField(auto_now_add=True)

is_accessible = models.BooleanField(default=True, null=True, blank=True)

is_intro = models.BooleanField(default=False, null=True, blank=True)

projects = models.ManyToManyField(

"self", blank=True, related_name='courses')

# objects = DefaultSelectOrPrefetchManager(

# select_related=('robotics_kit', 'course_class', 'course_type'))

def __str__(self):

return self.name

class Section(models.Model):

class Meta:

ordering = ['pk']

course = models.ForeignKey(

Course, related_name='sections', on_delete=models.CASCADE)

name = models.CharField(max_length=120)

created_date = models.DateTimeField(auto_now_add=True)

order_list = models.CharField(max_length=500, validators=[

int_list_validator], blank=True, null=True)

def __str__(self):

return self.name

class SubSection(models.Model):

class Meta:

ordering = ['pk']

section = models.ForeignKey(

Section, related_name='sub_sections', on_delete=models.CASCADE)

name = models.CharField(max_length=120)

goal = models.TextField(max_length=500, default='', blank=True, null=True)

image = models.FileField(upload_to=upload_path, null=True, blank=True, validators=[

FileExtensionValidator(allowed_extensions=['jpg', 'png', 'jpeg'])])

link = models.URLField(max_length=200, null=True, blank=True)

created_date = models.DateTimeField(auto_now_add=True)

order_list = models.CharField(max_length=500, validators=[

int_list_validator], blank=True, null=True)

is_homework = models.BooleanField(default=False)

materials = GenericRelation(

"Material", null=True, related_query_name='sub_section')

comments = GenericRelation(

"Comment", null=True, related_query_name='sub_sections')

point = models.PositiveSmallIntegerField(default=0)

skills = models.ManyToManyField(Skill)

hours = models.PositiveIntegerField(default=0, blank=True)

def __str__(self):

return self.name

def get_absolute_url(self):

return reverse("sub_section", kwargs={"course_pk": self.section.course.pk,

"section_pk": self.section.pk, "sub_section_pk": self.pk})

class Step(models.Model):

class Meta:

ordering = ['pk']

TEXT = 1

HINT = 2

TEST = 3

EXERCISE = 4

CODE_EXAMPLE = 5

MODELING_3D = 6

VIDEO = 7

MATERIALS = 8

TYPE_CHOICES = (

(TEXT, 'Текст'),

(HINT, 'Подсказка'),

(TEST, 'Тестовое задание'),

(EXERCISE, 'Упражнение для программирование'),

(CODE_EXAMPLE, 'Пример кода'),

(MODELING_3D, 'Пример 3D модели'),

(VIDEO, 'Видео'),

(MATERIALS, 'Материалы'),

)

sub_section = models.ForeignKey(

SubSection, related_name='steps', on_delete=models.CASCADE)

name = models.CharField(blank=True, max_length=255)

step_type = models.PositiveSmallIntegerField(

choices=TYPE_CHOICES, default=TEXT)

materials = GenericRelation(

"Material", null=True, related_query_name='step')

created_date = models.DateTimeField(auto_now_add=True)

class TextLinkFileStep(models.Model):

step = models.OneToOneField(

Step, related_name='step_text_link_file', on_delete=models.CASCADE, null=True, blank=True)

text = models.TextField(blank=True, null=True)

file = models.FileField(upload_to=upload_path, null=True, blank=True)

link = models.URLField(max_length=200, null=True, blank=True)

created_date = models.DateTimeField(auto_now_add=True)

so here I need help how to correctly get those fileds and make duplicate from top Course object to bottom TextLinkFileStep objects

def make_duplicate(modeladmin, request, queryset):

for obj in queryset:

pk = obj.id

try:

course = Course.objects.prefetch_related(

"sections",

"sections__sub_sections",

"sections__sub_sections__tests",

"sections__sub_sections__tests__answers",

Prefetch(

"sections__sub_sections__steps",

Step.objects.select_related("step_text_link_file", "step_test"),

),

"skills",

).get(pk=pk)

# new course

new_course = course

new_course.pk = None

new_course.name = course.name + " Copy"

new_course.status = course.status

# course_skills

for skill in course.skills.all():

new_skill = skill

new_skill.pk = None

new_skill.course = new_course

new_skill.save()

course_order_list = list()

# changing order list

new_course.save()

# course_sections

for section in course.sections.all():

new_section = section

new_section.pk = None

new_section.course = new_course

section_order_list = list()

new_section.save()

course_order_list.append(new_section.id)

# section sub_section

for sub_section in section.sub_sections.all():

new_sub_section = sub_section

new_sub_section.pk = None

new_sub_section.section = new_section

sub_section_order_list = []

new_sub_section.save()

section_order_list.append(new_sub_section.id)

# steps and text_link_file

for step in sub_section.steps.all():

new_step = step

new_step.pk = None

new_step.sub_section = new_sub_section

new_step.save()

# copying test_step and test_step

if step.step_type == Step.TEST:

print("step is test")

# new_test_step = step.step_test

# new_test_step.pk = None

# new_test_step.step = new_step

# new_test_step.save()

sub_section_order_list.append(new_step.id)

print(step.id) # error new step iz

try:

# text_file_link, txt_file_created = TextLinkFileStep.objects.get_or_create(

# step=Step(pk=step.id)) # .values('text', 'file', 'link')

# new_text_file_link = text_file_link

# needed line below

new_text_file_link = TextLinkFileStep.objects.create(

step=step,

text=step.text_file_link.text,

link=step.text_file_link.link,

file=step.text_file_link.file,

)

# new_text_file_link = step.step_text_link_file

# new_text_file_link.pk = None

# new_text_file_link.step = new_step

# new_text_file_link.text = text_file_link.text

print("text is", step.text_file_link)

new_text_file_link.save()

except:

print("text link file step tries to be existed")

# tests = Test.objects.filter(sub_section__pk=sub_section.id)

# for test in list(tests):

# new_test = test

# new_test.pk = None

# new_test.sub_section = new_sub_section

# new_test.save()

# answers = AnswerStep.objects.filter(test__pk=test.id)

# for answer in list(answers):

# new_answer = answer

# new_answer.pk = None

# new_answer.test = new_test

# new_answer.save()

new_sub_section.order_list = from_list_to_chars(sub_section_order_list)

new_sub_section.save()

new_section.order_list = from_list_to_chars(section_order_list)

new_section.save()

new_course.order_list = from_list_to_chars(course_order_list)

new_course.save()

except Course.DoesNotExist:

print("course does not exist")

So my function above is failing in Step and TextLinkFileStep objects

I need your assistance in this issue. My only hope is for this community))

Feel free to make any suggestions

Best regards

[skumar pandey]

Can you please create a user who can update their profile using django rest framework and along with jwt authentication its a request.

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[carlos]

Hi, you need read this first

https://docs.djangoproject.com/en/4.0/ref/contrib/admin/actions/

and then this

https://stackoverflow.com/questions/3989894/create-a-django-admin-action-to-duplicate-a-record

Cheers

To view this discussion on the web visit https://groups.google.com/d/msgid/django-rest-framework/CABQ6D0yEbsX2%2BgLD16LkUUg6dZna2veZ7VEDw5crXhQfOT-MqA%40mail.gmail.com.

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att.

Carlos Rocha

[Alibek Khojabekov]

thank you guys a lot. Literally saved me)

Best wishes