Django talk: October 2021

Friday, October 29, 2021

Hi, i had question in django rest framework

Hello I am a backend developer who is developing python django.
I sent you an e-mail because I had a question.
Currently, my company provides web services using pure django.
As the company grew bigger and bigger,
the direction of development was decided through api communication by separating the front and backend from one django project,
and we are trying to proceed with api communication using the django rest framework.
At this time, do I have to pay the usage fee when I want to develop it using the django rest framework for commercial purposes in the project currently being serviced by the company?
Or if you can use it without paying the usage fee, do you have to disclose the source or any restrictions under the license?

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Thursday, October 28, 2021

TypeError: metaclass conflict: the metaclass of a derived class must be a (non-strict) subclass of the metaclasses of all its bases

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Recognize Tags in templates

Good morning,

Hello Everybody,

I use the tags to templates but it is being recognized for Server to show content

Please Help me.

Greetings,

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Wednesday, October 27, 2021

Re: facing problems while deploying the project some error with static files

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-----END PGP PUBLIC KEY BLOCK-----On 27/10/2021 12.51, 'Mr. Aryan Sharma 4-Year B.Tech. Computer Science
and Engineering' via Django users wrote:
> i am using heroku
>

You are probably doing something wrong. Try to do things correctly
instead and see if that doesn't solve your problems.

Kind regards,

Kasper Laudrup

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Tuesday, October 26, 2021

Re: Modeform Foreign key column not working

Hi,

I am trying to save the model form and getting error that foreign key column is not there.

Error:

column "connection_type_id" of relation "connection_details_test" does not exist ( There is no column connection_type_id, why its looking for this column, should I change my model?)

Models:

======

class ConnectionTypes(models.Model):

connection_type_id = models.IntegerField(primary_key=True,default=re_sequence('connection_type_seq'))

connection_type_name = models.CharField(max_length=100)

connection_type_desc = models.CharField(max_length=300)

connection_type_category = models.CharField(max_length=100)

last_update_date = models.DateTimeField(default=dbcurr_ts)

class Meta:

managed = False

db_table ='connection_types_test'

verbose_name = 'connection_types_test'

verbose_name_plural = 'connection_types_test'

def __str__(self):

return str(self.connection_type_id)

class ConnectionDetails(models.Model):

connection_id = models.IntegerField(primary_key=True,default=re_sequence('connection_seq'))

connection_name = models.CharField(max_length=200)

connection_type = models.ForeignKey(ConnectionTypes, on_delete=models.CASCADE)

endpoint = models.CharField(max_length=100)

port = models.IntegerField()

login_id = models.CharField(max_length=100)

login_password = fields.CharPGPPublicKeyField(max_length=100)

connection_string_1 = fields.CharPGPPublicKeyField(max_length=100)

connection_string_2 = fields.CharPGPPublicKeyField(max_length=100)

connection_string_3 = fields.CharPGPPublicKeyField(max_length=100)

aws_region = models.CharField(max_length=20)

owner_id = models.IntegerField()

last_update_date = models.DateTimeField(default=dbcurr_ts)

working_schema = models.CharField(max_length=100)

service = models.CharField(max_length=100)

def generate_enc(mystrenc):

return 'pass'

class Meta:

managed = False

db_table = 'connection_details_test'

verbose_name = 'connection_details_test'

verbose_name_plural = 'connection_details_test'

Model Form :

==========

class ConnectionForm(forms.ModelForm):

login_password = forms.CharField(widget=forms.PasswordInput())

owner_id = forms.IntegerField(widget=forms.HiddenInput(), required=False)

class Meta:

model = ConnectionDetails

exclude = ['connection_id','last_update_date']

View.py

======

def addconnection(request):

connectionform = ConnectionForm(request.POST or None)

if connectionform.is_valid():

ownerqs = AuthUser.objects.values('id').get(username = request.user.username)

connectionform.cleaned_data['owner_id'] = int(ownerqs['id'])

connectionform.save()

messages.success(request, f"sucess!")

else:

messages.success(request, f"Failure!")

return render(request,'main/ssaddconnection.html',{"cform":

connectionform,"CanUseMod":UserModules.objects.filter(user_id=request.user.id).filter(module_id=1).count(),"UserIsAuth":request.user.is_authenticated})

Anyone can help me on this??

Thanks,

Aruna

On Saturday, 23 October 2021 at 18:53:38 UTC+1 sutharl...@gmail.com wrote:

cool! mention not :)

On Thu, 21 Oct 2021 at 19:57, Aruna Priya Nagarajan <arunapriya...@gmail.com> wrote:

yeah, it is a foreign key and I have put integer field instead of foreign key in the model. I changed it now and its working by itself without specifying ModelChoiceField.

Thanks for your help!!

On Wednesday, 20 October 2021 at 16:07:04 UTC+1 sutharl...@gmail.com wrote:
is `ConnectionTypes` a foreign key to `ConnectionDetails`?
in that case you don't need to put it as a field in form, it will be added automatically in the form.
On Wednesday, 20 October 2021 at 18:47:44 UTC+5:30 Aruna Priya wrote:
Hi,

I am trying to create a form from model and the model has a foreign key and am not able to populate the values from the column it refers to.

My form,

class ConnectionForm(forms.ModelForm):
connection_type = forms.ModelChoiceField(queryset=ConnectionTypes.objects.all(), to_field_name='connection_type_id')

class Meta:
model = ConnectionDetails
exclude = ['connection_id','last_update_date']

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Saturday, October 23, 2021

Re: Modeform Foreign key column not working

cool! mention not :)

On Thu, 21 Oct 2021 at 19:57, Aruna Priya Nagarajan <arunapriya.nagarajan@gmail.com> wrote:

yeah, it is a foreign key and I have put integer field instead of foreign key in the model. I changed it now and its working by itself without specifying ModelChoiceField.

Thanks for your help!!

On Wednesday, 20 October 2021 at 16:07:04 UTC+1 sutharl...@gmail.com wrote:
is `ConnectionTypes` a foreign key to `ConnectionDetails`?
in that case you don't need to put it as a field in form, it will be added automatically in the form.
On Wednesday, 20 October 2021 at 18:47:44 UTC+5:30 Aruna Priya wrote:
Hi,

I am trying to create a form from model and the model has a foreign key and am not able to populate the values from the column it refers to.

My form,

class ConnectionForm(forms.ModelForm):
connection_type = forms.ModelChoiceField(queryset=ConnectionTypes.objects.all(), to_field_name='connection_type_id')

class Meta:
model = ConnectionDetails
exclude = ['connection_id','last_update_date']

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Thursday, October 21, 2021

Re: Modeform Foreign key column not working

yeah, it is a foreign key and I have put integer field instead of foreign key in the model. I changed it now and its working by itself without specifying ModelChoiceField.

Thanks for your help!!

On Wednesday, 20 October 2021 at 16:07:04 UTC+1 sutharl...@gmail.com wrote:

is `ConnectionTypes` a foreign key to `ConnectionDetails`?
in that case you don't need to put it as a field in form, it will be added automatically in the form.
On Wednesday, 20 October 2021 at 18:47:44 UTC+5:30 Aruna Priya wrote:
Hi,

I am trying to create a form from model and the model has a foreign key and am not able to populate the values from the column it refers to.

My form,

class ConnectionForm(forms.ModelForm):
connection_type = forms.ModelChoiceField(queryset=ConnectionTypes.objects.all(), to_field_name='connection_type_id')

class Meta:
model = ConnectionDetails
exclude = ['connection_id','last_update_date']

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Wednesday, October 20, 2021

Re: django datatable

hey this is my code

On Wed, Oct 20, 2021 at 11:09 PM Lakshyaraj Dash X-D 25 <dashlakshyaraj2006@gmail.com> wrote:

You can use tailwind css, material ui, bootstrap or if you want to use custom css, just inspect the element and target the id of the element and add custom css.

On Wed, Oct 20, 2021, 11:26 Eugene TUYIZERE <eugenetuyizere@gmail.com> wrote:
Please suggest a good CSS for the datatable below

Regards,

--
Eugene

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Re: django datatable

You can use tailwind css, material ui, bootstrap or if you want to use custom css, just inspect the element and target the id of the element and add custom css.

On Wed, Oct 20, 2021, 11:26 Eugene TUYIZERE <eugenetuyizere@gmail.com> wrote:

Please suggest a good CSS for the datatable below

Regards,

--
Eugene

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Re: Modeform Foreign key column not working

is `ConnectionTypes` a foreign key to `ConnectionDetails`?
in that case you don't need to put it as a field in form, it will be added automatically in the form.

On Wednesday, 20 October 2021 at 18:47:44 UTC+5:30 Aruna Priya wrote:

Hi,

I am trying to create a form from model and the model has a foreign key and am not able to populate the values from the column it refers to.

My form,

class ConnectionForm(forms.ModelForm):
connection_type = forms.ModelChoiceField(queryset=ConnectionTypes.objects.all(), to_field_name='connection_type_id')

class Meta:
model = ConnectionDetails
exclude = ['connection_id','last_update_date']

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Re: django datatable

you can try bootstrap also

On Wed, 20 Oct 2021 at 12:46, Abhishek Choudhury <choudhuryabhishek76@gmail.com> wrote:

Hi,

You can use Tailwind CSS and it will significantly improve the UI.

Thanks and regards,
Abhishek Choudhury

On Wed, 20 Oct 2021 at 11:26 AM, Eugene TUYIZERE <eugenetuyizere@gmail.com> wrote:
Please suggest a good CSS for the datatable below

Regards,

--
Eugene

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Thanks and regards,
Abhishek Choudhury
Mobile: +91 7903717967

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Modeform Foreign key column not working

Hi,

I am trying to create a form from model and the model has a foreign key and am not able to populate the values from the column it refers to.

My form,

class ConnectionForm(forms.ModelForm):

connection_type = forms.ModelChoiceField(queryset=ConnectionTypes.objects.all(), to_field_name='connection_type_id')

class Meta:

model = ConnectionDetails

exclude = ['connection_id','last_update_date']

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Re: django datatable

Hi,

You can use Tailwind CSS and it will significantly improve the UI.

Thanks and regards,

Abhishek Choudhury

On Wed, 20 Oct 2021 at 11:26 AM, Eugene TUYIZERE <eugenetuyizere@gmail.com> wrote:

Please suggest a good CSS for the datatable below

Regards,

--
Eugene

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Thanks and regards,
Abhishek Choudhury
Mobile: +91 7903717967

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Tuesday, October 19, 2021

django datatable

Please suggest a good CSS for the datatable below

Regards,

Eugene

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Re: DJNAGO Many to Many field MultiSelect Into DropdownList

It is not working with SelectMultiple. I can select multiple values but it is not showing any drop down.

On Mon, 18 Oct 2021 at 16:07, Sebastian Jung <sebastian.jung2@gmail.com> wrote:

Hello,

then change in widgets Select() to SelectMultiple().

https://docs.djangoproject.com/en/3.2/ref/forms/widgets/#selectmultiple

Regards

Am Mo., 18. Okt. 2021 um 15:51 Uhr schrieb 'Maryam Yousaf' via Django users <django-users@googlegroups.com>:
Hi,

I have one manytomany field in one of my model which is currently coming as Multiselect but I need a dropdown where user can select multiple values as I have huge data to show.

I am trying this in forms.py but it is not showing dropdown field.

Kindly help me out.

Model.py:

class Chain(models.Model):
chain_id = models.AutoField(primary_key=True)
chain_name = models.CharField(max_length=255, unique=True)
chain_type = models.ForeignKey(ChainType, on_delete=models.CASCADE)
history = HistoricalRecords()

def __str__(self):
return self.chain_name

class Meta:
ordering = ('chain_name',)

class Brg(models.Model):
brg_campaign_id = models.AutoField(primary_key=True)
campaign_tracking = models.ForeignKey(CampaignTracking, on_delete=models.CASCADE)
brg_name = models.ForeignKey(Chain, on_delete=models.CASCADE, related_name="primary_brg",
help_text='Add Brgs/chain names for these above campaign has run')
brg_benchmark = models.ManyToManyField(Chain, related_name="competitor_brg", null=True,
blank=True, help_text='Add max.5 other benchmarks brgs to check overall impact')
history = HistoricalRecords()

def __str__(self):
return "Brg names list"

class Meta:
verbose_name = 'Brg Campaign Tracking'

forms.py:
class ChainForm(forms.ModelForm):
class Meta:
model: Chain
# fields = ('campaign_tracking', 'brg_name', 'brg_benchmark',)
widgets = {
'chain_name': Select(),
}

Regards,
maryam

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This is an email from the company Just Eat Takeaway.com N.V., a public limited liability company with corporate seat in Amsterdam, the Netherlands, and address at Oosterdoksstraat 80, 1011 DK Amsterdam, registered with the Dutch Chamber of Commerce with number 08142836 and where the context requires, includes its subsidiaries and associated undertakings.

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Monday, October 18, 2021

Custom User error

Saludos, me estoy iniciando en el mundo de django y tengo algunos problemas con un usuario personalizado, para el registro de usuarios a la base de datos, el ejemplo que tengo funciona al 100% con el usuario que viene por defecto me permite renderizar el formulario de registro de usuario sin ningún inconveniente, pero cuando creo un usuario personalizado la misma pantalla para el registro ya no funciona para mí, ya no funciona para mí, he leído mucho de la web pero nada funciona para mí. Debería ser algo muy simple, pero no puedo encontrar lo que debo hacer.

Para realizar el cambio a un usuario personalizado, borra la base de datos y la migración que tuve para crear una base de datos limpia con el nuevo modelo, pero no he podido hacerlo.

models.py

desde django.contrib.auth.models importar AbstractUser

clase UserProfile (AbstractBaseUser, PermissionsMixin):

# plantilla de tabla para usuarios de inicio de sesión del sistema con correo electrónico

correo electrónico = modelos. EmailField (max_length = 255, unique = True, verbose_name = 'E-mail')

nombre = modelos. CharField (max_length = 200)

is_active = modelos. BooleanField (predeterminado = Verdadero)

is_staff = modelos. BooleanField (predeterminado = False)

views.py

desde .forms importar UserProfile

def record (solicitud):

datos = {

'formulario': UserProfile ()

}

form = UserProfile (datos = solicitud. POST)

si form.is_valid ():

form.save ()

#authentic a la vez

usuario = autenticar (nombre de usuario = form.cleaned_data ["correo electrónico"], contraseña = form.cleaned_data ["contraseña1"])

# Inicio sesión aquí

#redirect inicio

messages.success (solicitud, "Registrado correctamente")

redirigir de retorno (a = "inicio")

data ["form"] = formulario

devolución (solicitud, 'registro / registro.html', datos)

setting.py

AUTH_USER_MODEL = 'perfiles. UserProfile'

Repito con el modelo de usuario que viene por defecto de django, funciona al 100%

Al ejecutar el servidor me arroja este error

TypeError at / record /

UserProfile () obtuvo un argumento de palabra clave inesperado 'data'

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Sunday, October 17, 2021

Edit data from django-ajax-datatable

Dear Team,

I am using django-ajax-datatable and I have this:

The Edit button is added from server side as follow:

    def customize_row(self, row, obj):
        row['edit'] = """
            <a href="#" class="btn btn-success btn-edit"
               onclick="var id=this.closest('tr').id.substr(4); alert('Editing Input number: ' + id); return false;">
               Edit
            </a>
            """

the table itself is rendered to html from:

                    <script language="javascript">

                        $(document).ready(function() {
                            AjaxDatatableViewUtils.initialize_table(
                                $('#datatable_membership'),
                                "{% url 'ajax_datatable_membership' %}",
                                {
                                    // extra_options (example)
                                    processing: true,
                                    autoWidth: false,
                                    full_row_select: true,
                                    scrollX: false
                                }, {
                                    // extra_data

                                },
                            );

                        });

                    </script>

when you click the edit button there is an alert showing the ID of the record.

Then, from the code above, what can I do such that when I click on the Edit button the new window of the clicked ID is showing out so that I can edit the record?

Thank you for the help

regards,

Eugene

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Wednesday, October 13, 2021

Re: Child data table in Django

Dear Sebstian,

Thank you for your email. Frankly speaking I do not have the code for that kind of table. I used to use the usual datatable but now I want to implement the one with child row as the image I attached previously.

Regards,

On Wed, 13 Oct 2021 at 15:30, Sebastian Jung <sebastian.jung2@gmail.com> wrote:

Hello eugene,

You have implement also jquery >= 3.5.1 and datatablea.min.js

Please show us your html code and javascript code that open row when you click on this item...

Regards

Eugene TUYIZERE <eugenetuyizere@gmail.com> schrieb am Mi., 13. Okt. 2021, 14:05:
Dear All,

Kindly assist me to have a tutorial or code to make this kind of table in django. I failed to do this from the datatable .net tutorial.

regards,

--
Eugene

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TUYIZERE Eugene

Msc Degree in Mathematical Science

African Institute for Mathematical Sciences (AIMS Cameroon)
Crystal Garden-Lime, Cameroon

Bsc in Computer Science

UR-Nyagatare Campus

Email: eugene.tuyizere@aims-cameroon.org

eugenetuyizere@gmail.com

Tel: (+250) 7 88 26 33 38, (+250) 7 22 26 33 38

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Re: Child data table in Django

Hello eugene,

You have implement also jquery >= 3.5.1 and datatablea.min.js

Please show us your html code and javascript code that open row when you click on this item...

Regards

Eugene TUYIZERE <eugenetuyizere@gmail.com> schrieb am Mi., 13. Okt. 2021, 14:05:

Dear All,

Kindly assist me to have a tutorial or code to make this kind of table in django. I failed to do this from the datatable .net tutorial.

regards,

--
Eugene

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Re: Child data table in Django

I want to make the same as this below but using django. That is what I want. The data are in one table but display shows child table

https://datatables.net/examples/server_side/row_details.html

any one help please

On Wed, 13 Oct 2021 at 14:28, Ammar Mohammed <amarben1000@gmail.com> wrote:

Hello Dear

You can use djangos prefetch_related in the docs :
prefetch_related()¶
prefetch_related(*lookups)¶
Returns a QuerySet that will automatically retrieve, in a single batch, related objects for each of the specified lookups.
This has a similar purpose to select_related, in that both are designed to stop the deluge of database queries that is caused by accessing related objects, but the strategy is quite different.
select_related works by creating an SQL join and including the fields of the related object in the SELECT statement. For this reason, select_related gets the related objects in the same database query. However, to avoid the much larger result set that would result from joining across a 'many' relationship, select_related is limited to single-valued relationships - foreign key and one-to-one.
prefetch_related, on the other hand, does a separate lookup for each relationship, and does the 'joining' in Python. This allows it to prefetch many-to-many and many-to-one objects, which cannot be done using select_related, in addition to the foreign key and one-to-one relationships that are supported by select_related. It also supports prefetching of GenericRelation and GenericForeignKey, however, it must be restricted to a homogeneous set of results. For example, prefetching objects referenced by a GenericForeignKey is only supported if the query is restricted to one ContentType.
For example, suppose you have these models:
from django.db import models    class Topping(models.Model):      name = models.CharField(max_length=30)    class Pizza(models.Model):      name = models.CharField(max_length=50)      toppings = models.ManyToManyField(Topping)        def __str__(self):              # __unicode__ on Python 2          return "%s (%s)" % (              self.name,              ", ".join(topping.name for topping in self.toppings.all()),          )  
and run:
>>> Pizza.objects.all()
Url : https://docs.djangoproject.com/en/1.10/ref/models/querysets/
On Wed, 13 Oct 2021, 2:06 PM Eugene TUYIZERE, <eugenetuyizere@gmail.com> wrote:
Dear All,

Kindly assist me to have a tutorial or code to make this kind of table in django. I failed to do this from the datatable .net tutorial.

regards,

--
Eugene

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TUYIZERE Eugene

Msc Degree in Mathematical Science

African Institute for Mathematical Sciences (AIMS Cameroon)
Crystal Garden-Lime, Cameroon

Bsc in Computer Science

UR-Nyagatare Campus

Email: eugene.tuyizere@aims-cameroon.org

eugenetuyizere@gmail.com

Tel: (+250) 7 88 26 33 38, (+250) 7 22 26 33 38

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Re: Child data table in Django

Hello Dear

You can use djangos prefetch_related in the docs :

`prefetch_related()`¶

prefetch_related(*lookups)¶

Returns a QuerySet that will automatically retrieve, in a single batch, related objects for each of the specified lookups.

This has a similar purpose to select_related, in that both are designed to stop the deluge of database queries that is caused by accessing related objects, but the strategy is quite different.

select_related works by creating an SQL join and including the fields of the related object in the SELECT statement. For this reason, select_related gets the related objects in the same database query. However, to avoid the much larger result set that would result from joining across a 'many' relationship, select_related is limited to single-valued relationships - foreign key and one-to-one.

prefetch_related, on the other hand, does a separate lookup for each relationship, and does the 'joining' in Python. This allows it to prefetch many-to-many and many-to-one objects, which cannot be done using select_related, in addition to the foreign key and one-to-one relationships that are supported by select_related. It also supports prefetching of GenericRelation and GenericForeignKey, however, it must be restricted to a homogeneous set of results. For example, prefetching objects referenced by a GenericForeignKey is only supported if the query is restricted to one ContentType.

For example, suppose you have these models:

from django.db import models    class Topping(models.Model):      name = models.CharField(max_length=30)    class Pizza(models.Model):      name = models.CharField(max_length=50)      toppings = models.ManyToManyField(Topping)        def __str__(self):              # __unicode__ on Python 2          return "%s (%s)" % (              self.name,              ", ".join(topping.name for topping in self.toppings.all()),          )

and run:

>>> Pizza.objects.all()

Url : https://docs.djangoproject.com/en/1.10/ref/models/querysets/

On Wed, 13 Oct 2021, 2:06 PM Eugene TUYIZERE, <eugenetuyizere@gmail.com> wrote:

Dear All,

Kindly assist me to have a tutorial or code to make this kind of table in django. I failed to do this from the datatable .net tutorial.

regards,

--
Eugene

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Django talk

Friday, October 29, 2021

Hi, i had question in django rest framework

Thursday, October 28, 2021

TypeError: metaclass conflict: the metaclass of a derived class must be a (non-strict) subclass of the metaclasses of all its bases

Recognize Tags in templates

Wednesday, October 27, 2021

Re: facing problems while deploying the project some error with static files

Tuesday, October 26, 2021

Re: Modeform Foreign key column not working

Saturday, October 23, 2021

Re: Modeform Foreign key column not working

Thursday, October 21, 2021

Re: Modeform Foreign key column not working

Wednesday, October 20, 2021

Re: django datatable

Re: django datatable

Re: Modeform Foreign key column not working

Re: django datatable

Modeform Foreign key column not working

Re: django datatable

Tuesday, October 19, 2021

django datatable

Re: DJNAGO Many to Many field MultiSelect Into DropdownList

Monday, October 18, 2021

Custom User error

Sunday, October 17, 2021

Edit data from django-ajax-datatable

Wednesday, October 13, 2021

Re: Child data table in Django

Re: Child data table in Django

Re: Child data table in Django

`prefetch_related()`¶

Re: Child data table in Django

`prefetch_related()`¶

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Friday, October 29, 2021

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Saturday, October 23, 2021

Thursday, October 21, 2021

Wednesday, October 20, 2021

Tuesday, October 19, 2021

Monday, October 18, 2021

Sunday, October 17, 2021

Wednesday, October 13, 2021

prefetch_related()¶

prefetch_related()¶

Followers

Blog Archive

About Me

`prefetch_related()`¶

`prefetch_related()`¶