Get the object name in django admin - django

Hej!
I want to have a category for turnovers in my admin area and in there I have a field with currency. It is a dropdown field with pre given currencies.
My problem is, that there aren't the actual currencies shown rather their IDs. (like Object 123).
Does anyone know how to solve this for an inline?
# models.py
class Currency(models.Model):
code = models.CharField(max_length=3, unique=True)
currency = models.CharField(max_length=150, unique=True)
class Turnover(models.Model):
currency = models.ForeignKey(Currency, on_delete=models.PROTECT)
# admin.py
class TurnoverInline(admin.TabularInline):
model = Turnover
extra = 1
classes = ["collapse"]
class SomeAdmin(admin.ModelAdmin):
form = SomeForm
save_on_top = True
inlines = [
TurnoverInline
]
For a similar problem I created admin.ModelAdmins and integrated a code_str(self) and str(self) method in the model. But those aren't Inlines and in the SomeForm/SomeAdmin as fields/autocomplete_fields.

You can use __str__ in the Currency model:
class Currency(models.Model):
code = models.CharField(max_length=3, unique=True)
currency = models.CharField(max_length=150, unique=True)
def __str__(self):
return f'{self.code} - {self.currency}'
The dropdown should then show this format instead of the object and id.

Related

Getting a column instead of an object when relating with PrimaryKeyRelatedField in Django-Rest-Framework

I have a model for applications, which among many attributes have a category. This category is in fact a key to another model that has the category ID, its name, and so on.
class Application(models.Model):
title = models.CharField(max_length=50)
vendor = models.CharField(max_length=50, default="Unknown", null=False)
.
.
.
category = models.ForeignKey('ApplicationCategory', related_name='applications', null=False, default=1, on_delete=models.SET_DEFAULT)
class ApplicationCategory(models.Model):
name = models.CharField(max_length=20, null=False)
description = models.CharField(max_length=200, null=False)
Then, on the Django REST serializers side I have the serializer for the applications:
class SoftwareSerializer(serializers.ModelSerializer):
category = serializers.PrimaryKeyRelatedField(queryset=ApplicationCategory.objects.all())
class Meta:
model = Application
fields = ['id', 'title', ... 'category']
Which is generating the expected API view, with a dropdown for the categories, but showing them as the ApplicationCategory objects and not giving me their name.
API showing Category dropdown with objects instead of names
Is there a way to access attributes of those objects to show the name in the dropdown, for usability sake?
I have also tried creating a CategorySerializer object (class CategorySerializer(serializers.ModelSerializer)) and then using it as category = CategorySerializer(many=False) but instead of dropdowns, I get open text fields for the attributes of the category.
Am I trying to do something that is not expected to work?
try to define the desired text in str method for your ApplicationCategory class:
class ApplicationCategory(models.Model):
name = models.CharField(max_length=20, null=False)
description = models.CharField(max_length=200, null=False)
#example
def __str__(self):
return '%s: %s' % (self.name , self.description)

Django inline model formset with 2 models

First of all, please forgive for my newbie questions. I did copy most of the code, and try to understand from Django documents.
Code as below:
models.py
class Order(models.Model):
ORDER_CHOICES = (
('import', 'IMPORT'),
('export', 'EXPORT')
)
storage = models.ForeignKey(Storage, on_delete=models.PROTECT)
order_type = models.CharField(max_length=6, choices=ORDER_CHOICES)
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now_add=True)
class Item(models.Model):
def random_barcode():
return str(random.randint(10000000, 99999999))
type = models.ForeignKey(Type, on_delete=models.CASCADE)
order = models.ForeignKey(Order, on_delete=models.CASCADE, null=True)
brand = models.ForeignKey(Brand, on_delete=models.CASCADE)
item_name = models.CharField(max_length=50, help_text='Name of goods, max 50 characters')
barcode = models.CharField(max_length=8, default=random_barcode, unique=True)
production_date = models.DateField()
expired_date = models.DateField()
def __str__(self):
return self.item_type
forms.py
class ItemForm(ModelForm):
class Meta:
model = Item
exclude = ['order',]
fields = ['type', 'brand', 'item_name', 'production_date', 'expired_date']
ItemFormSet = inlineformset_factory(Order, Item, form=ItemForm, extra=1)
views.py
class CreatePO(CreateView):
model = Order
context_object_name = 'orders'
template_name = 'storages/create_po.html'
fields = ['order_type', 'storage',]
*#dun't know how to write below code....*
1st question: how to use inline formset to write the CreatePO view?
2nd question: I need my create PO template as below picture, how to add a "Quantity" field?
This kind of template need Javascript, right? Any alternative solution? I have no knowledge with javascript.
First of all, move the def random_barcode(): before def __str__(self): it looks so ugly formated code.
Then let's have a look in your pic, if you haven't proper experience with Javascript you can use Admin Views from Django, it's much more simple and supported by Django 2.1. Read more if you would like to give permission to everyone in a admin-views page https://docs.djangoproject.com/el/2.1/releases/2.1/#model-view-permission
So quantity will be just added inside Item class
quantity = models.PositiveSmallIntegerField(default=1)
Also for your form, in my opinion, you need modelform_factory, so I suggest to read this one https://docs.djangoproject.com/en/2.1/topics/forms/modelforms/#modelform-factory-function

Serialization and permissions in Django Rest Framework

I'm new in Django and DRF, have questions with serialization.
I have models:
class Commodity(models.Model):
shop = models.ForeignKey(Company, on_delete=models.PROTECT)
price = models.DecimalField(max_digits=10, decimal_places=2)
active = models.BooleanField(default=False)
class Clother(models.Model):
commodity = models.ForeignKey(Commodity, related_name='commodity', on_delete=models.CASCADE)
color = models.ManyToManyField(Color, related_name='color')
material = models.ManyToManyField(Material, related_name='material')
gender = models.CharField(max_length=2, choices=GENDER_CHOICES, default=UNISEX)
class Outwear(models.Model):
clother = models.ForeignKey(Clother, on_delete=models.CASCADE)
name = models.CharField(max_length=30, blank=True)
outwear_type = models.ForeignKey(OutwearType, on_delete=models.CASCADE)
size = models.ManyToManyField(ClotherSize)
So I suppose to make a Serializer like that:
class OutwearSerializer(serializers.ModelSerializer):
commodity = CommoditySerializer(many=False, read_only=False)
clother = ClotherSerializer(many=False, read_only=False)
class Meta:
model = Outwear
fields = ('commodity', 'clother', 'name', 'outwear_type', 'size')
As I understand that read_only fields let me add or edit Outwear object further, but I supposed to have 2 types of permition:
All users can see only active Commodity objects.
Only Companies can create and edit their own objects.
Do I need to make 2 Serializer Models for read_only=True/False?
What is the best practice and where can I find good examples of something familiar?
I call User - unauthorized User. Company is authorized User.
Thanks!
For your first question:
class CommoditySerializer(ModelSerializer):
class Meta:
model = Commodity
fields = (shop, price)
Class CommodityActiveAPIView(generics.ListAPIView):
serializer_class = serializers.CommoditySerializer
queryset = Commodity.objects.filter(active=True)
second question is ambiguous. first define user role please

Django Nested Form - Always Showing Object instead of model details

I'm working on a Django project generated via Mezzanine. I've been able to create my models, however I want to have a form where an admin can select from a list to assign a value in a many to many or a one to many relationship. For example, I have a model for Schemas:
class Schema(AutoCreatedUpdatedMixin, SoftDeleteMixin):
"""List of all Schemas in a given database"""
name = models.CharField(max_length=128, null=False)
status = models.BooleanField(max_length=128, null=False, default=True, verbose_name="Is Active")
description = models.CharField(max_length=65535, null=True, blank=True, default=None)
database = models.ForeignKey(Database, on_delete=models.CASCADE)
pull_requests = models.ManyToManyField(Link)
questions = models.ManyToManyField(Question, blank=True)
comments = models.ManyToManyField(Comment, blank=True)
technical_owners = models.ManyToManyField(Employee, related_name='technical_owners_schemas', blank=True)
business_owners = models.ManyToManyField(Employee, related_name='business_owners_schemas', blank=True)
watchers = models.ManyToManyField(Employee, related_name='watchers_schemas', blank=True)
def __unicode__(self):
return "{}".format(self.name)
And I have a model for Employees
class Employee(AutoCreatedUpdatedMixin, SoftDeleteMixin):
"""List of people with any involvement in tables or fields: business or technical owners, developers, etc"""
name = models.CharField(max_length=256, blank=False, null=False, default=None, unique=True)
email = models.EmailField(blank=True, null=True, unique=True)
def __unicode__(self):
return "{}".format(self.employee)
An employee can own multiple schemas and a schema can be owned by multiple employees. My database has an active employee in it, however when I try to create a Schema the employee shows up as Employee Object. Rather I would want the form to show the Employee.name. How can I do this? My admin file contains the following:
class SchemasAdmin(admin.ModelAdmin):
list_display = ['name', 'status', 'database', 'description']
ordering = ['status', 'database', 'name']
actions = []
exclude = ('created_at', 'updated_at', 'deleted_at')
First of all are you using python 2 or 3? For 3, the __str__ method should be used instead of __unicode__. I am writing this because it seems that there's a problem with the __unicode__ method of Employee, which although is defined as:
def __unicode__(self):
return "{}".format(self.employee)
th Employee class does not have an employee attribute (unless there's such an attribute in the mixins that class inherits from (AutoCreatedUpdatedMixin, SoftDeleteMixin) but I don't think that is the case.
In any case, the problem is that you haven't defined a propery __str__ (if using python 3) or __unicode__ (for python 2) method on the Employee class - just define it like:
return self.name
and you should see the employee's name in the django admin select fields.

Change Label Generic Inline Admin

I the following in the models.py:
class Item(models.Model):
date = models.DateField(_('date'), blank=True, null=True)
description = models.CharField(_('description'), max_length=255)
content_type = models.ForeignKey(ContentType, verbose_name=_('content type'))
object_id = models.PositiveIntegerField(_('object id'), db_index=True)
object = generic.GenericForeignKey('content_type', 'object_id')
class ItemAccountAmountRef(Item):
""" Items of which a Quote or an Invoice exists. """
amount = models.DecimalField(max_digits=10, decimal_places=2)
reference = models.CharField(max_length=200)
debit_account = models.ForeignKey(Account, related_name='receivables_receipt_debit_account')
credit_account = models.ForeignKey(Account, related_name='receivables_receipt_credit_account')
class PaymentItem(ItemAccountAmountRef):
pass
class Payment(models.Model):
invoice = models.ManyToManyField(Invoice, null=True, blank=True)
date = models.DateField('date')
attachments = generic.GenericRelation(Attachment)
site = models.ForeignKey(Site, related_name='payment_site', null=True, blank=True
items = generic.GenericRelation(PaymentItem)
in the admin.py:
class PaymentItemInline(generic.GenericTabularInline):
model = PaymentItem
form = PaymentItemForm
class PaymentAdmin(admin.ModelAdmin):
inlines = [PaymentItemInline]
in forms.py:
class PaymentItemForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
super(PaymentItemForm, self).__init__(*args, **kwargs)
self.fields['credit_account'].label = "Bank Account"
In the PaymentItemInline the label is not changing. I have tried changing other attributes e.g. class which work. If I run through the init in debug mode I can see that the label variable is changing however when the form is rendered the field is still labelled credit account. Any suggestions?
You're 98% of the way there. Instead of trying to futz with the form field in __init__, just redefine it in your ModelForm. If you name it the same thing, django will be able to figure out that it is supposed to validate & save to the ForeignKey field. You can use the same formula to change a Field or Widget completely for a given field in a ModelForm.
You can find the default form field types for each model field type here: https://docs.djangoproject.com/en/dev/topics/forms/modelforms/#field-types
class PaymentItemForm(forms.ModelForm):
credit_account = forms.ModelChoiceField(label="Bank Account", queryset=Account.objects.all())
That's it. No need to override any functions at all : )
Incidentally, the docs for this field are here: https://docs.djangoproject.com/en/dev/ref/forms/fields/#modelchoicefield