Django community: RSS
This page, updated regularly, aggregates Django Q&A from the Django community.
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TypeError: Expected a job store instance or a string, got NoneType instead
Why I am getting this error?? I am trying to apscheduler in my django project. But the function is working very well. After sending some email it turns off automatically. here is my code : import logging from django.conf import settings from apscheduler.schedulers.blocking import BlockingScheduler from django.core.management.base import BaseCommand from django.core.mail import send_mail from django.core.mail import EmailMessage from ...models import * from django_apscheduler.jobstores import DjangoJobStore from apscheduler.triggers.cron import CronTrigger logger = logging.getLogger(__name__) class Command(BaseCommand): help = "Running in the dark :)" def send_email_to_registered_users(self): assessment = Assessment.objects.all() mail_subject = "Newsletter" message = "Welcome to our newsletter" for i in assessment: sender = i.email email_send = EmailMessage(mail_subject, message, to=[sender]) email_send.send() print("email Sent") def handle(self, *args, **kwargs): scheduler = BlockingScheduler(timezone=settings.TIME_ZONE) scheduler.add_jobstore(DjangoJobStore(), "d") scheduler.add_jobstore( self.send_email_to_registered_users(), trigger=CronTrigger(second="*/10"), id="send_email_to_registered_users", max_instances=10, ) logger.info("Printing Jobs!!! and sending!!") scheduler.start() -
Django Reversion - Viewing incompatible version data
Is there a way to view incompatible version data using Django-Reversion or after making a change to the model? I understand I wouldn't be able to revert or reinstate a previous version before the model change, but is there a way to simply view the data? Here's the model before the change: class Product(models.Model): product_code = models.CharField(max_length=120, blank=True, null=True) #max_length=required related_category = models.ForeignKey(Category, on_delete=models.DO_NOTHING, blank = True, null=True) Then I added a 'discount' field: class Product(models.Model): product_code = models.CharField(max_length=120, blank=True, null=True) #max_length=required related_category = models.ForeignKey(Category, on_delete=models.DO_NOTHING, blank = True, null=True) discount = models.BooleanField() when I try to access previous versions, I see an error - "Could not save XXXXX version - missing dependency." I tried accessing previous versions via admin site and also by calling Version.objects.get_for_model(Product). I was expecting to be able to view the historical versions, but instead I get an error (missing dependency). -
How to setup VueJs vite version (not Vue CLI) with Django
I have seen many people set up Vue with django using the Vue CLI, it is now deprecated. I tried to set it up with the new Vue way 'npm init vue@latest' that uses Vite, but wasnt successfull. I have been using the Vue CDN but it lacks the components stuff -
Django how to use annotate with ManyToManyfield?
I want to take two fields from my model, one is a float, and the other is a ManyToMany and do an arithmetic operation on them and add them in a field with annotate At one point it worked for me and then it didn't. I don't know what would be the correct way I show some things from my files. models.py from django.db.models import F, DecimalField class Tax(models.Model): name = models.CharField(max_length=50) porcent = models.IntegerField() def __str__(self): return self.name class Product(models.Model): user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE) title = models.CharField(max_length=200) code_number = models.IntegerField(verbose_name='Bar Code') image = models.ImageField(upload_to='products/') purchase_price = models.DecimalField(max_digits=10, decimal_places=2) sale_price= models.DecimalField(max_digits=10, decimal_places=2) tax = models.ManyToManyField(Tax, blank=True, related_name="tax") description = models.TextField() created_date = models.DateTimeField( default=timezone.now) published_date = models.DateTimeField( blank=True, null=True) def publish(self): self.published_date = timezone.now() self.save() def __str__(self): return self.title views.py from django.shortcuts import render from .models import Tax, Product, Invoice from django.db.models import F, DecimalField class InvoiceDashboard(View): def get(self, request, *args, **kwargs): products=Product.objects.all().annotate(amount_tax = ((F('sale_price') / 100) * F('tax__porcent'))).annotate( price_total=(F('sale_price') + F('amount_tax')) ) context = { 'products': products, } return render(request, 'pos/cashier.html', context) pos/cashier.html {% extends 'pos/base.html' %} {% block content %} <tbody id="table_p"> {% for product in products %} <tr class="productO" id="{{ product.id }}" data-id="{{ product.id }}" data-saleprice="{{ product.sale_price … -
How to "force" the sharing the model instances between objects in django, when using prefetch_related()?
My question is: How to "force" the model instances to be shared? From output example below, Line 3 and Line 5 have Person(2) with different object instance ids. This means, there are 2 model instances of the same object, referenced from 2 different locations I would like to have them pointing to the exact same object instance. This way, there would be only 1 model instance of each object, referenced from multiple different locations Also, when a field is updated (for example, p2.name = 'p_two'), I would like to have it "visible" either by accessing the Person2 through any of Group12 or Group23, without the need to save and fetch data again. No need to save the model's state into database at this point. Documentation says: https://docs.djangoproject.com/en/4.1/ref/models/querysets/#:~:text=One%20difference%20to,and%20CPU%20time. Example of: models.py class Person(models.Model): name = models.CharField(max_length=128) def __str__(self): return f'<{hex(id(self))} P({self.pk}) {self.name}>' class Group(models.Model): name = models.CharField(max_length=128) members = models.ManyToManyField(to=Person, through='Membership') def __str__(self): return f'<{hex(id(self))} G({self.pk}) {self.name}>' class Membership(models.Model): person = models.ForeignKey(to=Person, on_delete=models.CASCADE) group = models.ForeignKey(to=Group, on_delete=models.CASCADE) member_nickname = models.CharField(max_length=128) def __str__(self): return f'<{hex(id(self))} M({self.pk}) of {self.person} in {self.group}>' Example of tests.py class MyTests(TestCase): def test_object_ids(self): p1 = Person.objects.create(name='person1') p2 = Person.objects.create(name='person2') p3 = Person.objects.create(name='person3') g12 = Group.objects.create(name='group1') g23 = Group.objects.create(name='group2') … -
Django add multiple forms with dynamic fields and foreign key constraint to one page
I am new to Django and are currently struggling with the following problem: I have a database model consisting of the following: ` class monitor(models.Model): imap_address = models.CharField(max_length=200) imap_email = models.CharField(max_length=200) imap_password = models.CharField(max_length=200) smtp_address = models.CharField(max_length=200) smtp_email = models.CharField(max_length=200) smtp_password = models.CharField(max_length=200) receiver_email = models.CharField(max_length=200) def __str__(self) -> str: return self.imap_email class Email_filter(models.Model): mail = models.ForeignKey(monitor, on_delete=models.CASCADE) filter = models.CharField(max_length=200) def __str__(self) -> str: return self.filter class Subject_filter(models.Model): mail = models.ForeignKey(monitor, on_delete=models.CASCADE) filter = models.CharField(max_length=200) def __str__(self) -> str: return self.filter class Body_filter(models.Model): mail = models.ForeignKey(monitor, on_delete=models.CASCADE) filter = models.CharField(max_length=200) def __str__(self) -> str: return self.filter class Attachment_filter(models.Model): mail = models.ForeignKey(monitor, on_delete=models.CASCADE) filter = models.BooleanField() def __str__(self) -> str: return self.filter ` So I have one main model monitor and each monitor can have any numbers of filters. Now, I would like to create a page to modify the database with multiple forms. One form for each of the monitor objects in the database (and one empty form to add a new one). For each form, I would like to edit the single fields of the monitor, as well as dynamically add any number of filters. I am now looking around all day but did not really find anything. … -
Can I combine two querysets when one has a rank annotation and the other doesn't?
I am trying to write a search feature and can't figure out how to combine the results of a rank-annotated search and a non-rank-annotated search. Let's say I have the following model: class Song(models.Model): filename=models.CharField(max_length=120, db_index=True) title=models.CharField(max_length=120, db_index=True) title_vector=SearchVectorField(null=True, blank=True) I would like to let the user enter a single search term and search both title and filename. So if a user enters "space" as a search term, it should search for any song that has space in the title or filename. The query on the title vector looks like this. The idea is to order the results by rank so I can put the most relevant search results at the top. title_query_results = Song.objects.annotate( rank=SearchRank(F('title_vector'), query) ).filter( title_vector=query ) However, the filename query looks like this: file_query_results = Song.objects.filter( filename__icontains=query ) Because the file query results do not contain the rank annotation, I can't do a union on the results, because they have a different number of columns. Is there a way to get rank annotation for a query on the filename column? If not, what are my options for doing a union on the search results? For example, if I just wanted all the filename results to appear … -
how configured for Tk python 3.10.7
i have the next error, i try deploy project of the webservices with django rest framework. The message error is that Python not be configured fot tk. This deploy is in render.com any ideas? File "/opt/render/project/python/Python-3.10.7/lib/python3.10/turtle.py", line 107, in import tkinter as TK File "/opt/render/project/python/Python-3.10.7/lib/python3.10/tkinter/init.py", line 37, in import _tkinter # If this fails your Python may not be configured for Tk ModuleNotFoundError: No module named '_tkinter' -
How to importing database from csv file in django?
In my webapp I need put a page where the user can create a database from a csv fileupload. I try do this using a def how done in here https://docs.djangoproject.com/en/4.1/topics/http/file-uploads/, but, dont work. I guess the models is working sucessfully, because the others forms. forms.py class FileFieldForm(ModelForm): title = forms.CharField(max_length=50) file = forms.FileField() class Meta: model = Colecao fields = '__all__' views.py class ColecaoCSVCreate(CreateView): login_url = reverse_lazy('login') form_class = FileFieldForm template_name = 'formulario/formulario_csv.html' success_url = reverse_lazy('listar_colecao') def post(self, request,*args,**kwargs): form_class = self.get_form_class() form = self.get_form(form_class) files = request.FILES['sent_file'] if form.is_valid(): for f in files: reader = csv.DictReader(io.StringIO(f.read().decode('utf-8'))) data = [line for line in reader] return self.form_valid(form) else: return self.form_invalid(form) formulario_csv.html <form method="POST" enctype="multipart/form-data"> {% csrf_token %} <input type="file" name="sent_file"/> {% if request.user.is_authenticated %} <button type="submit" class="btn btn-outline-primary">Confirmar</button> {% endif %} <a href="/listar/colecao/"> <button type="button" class="btn btn-outline-danger">Cancelar</button> </a> </form> When I upload csv a guet the error MultiValueDictKeyError at /cadastrar/csv/colecao/ 'sent_file' -
I can't get the user to create session in Django using a custom login
I am doing a CRUD in Django, I am creating a custom Login class, I made a form based on AuthenticationForm, and for my view "class Login", I have an error when calling the login function and trying to assign the "user" so that django creates the session. I'm trying to get it out of the form but I get the error: 'WSGIRequest' object has no attribute 'form' I have tried to get the "user" without success #There is forms.py from django.contrib.auth.forms import AuthenticationForm class FormularioLogin(AuthenticationForm): def init(self, *args, **kwargs): super().init(*args,**kwargs) self.fields['username'].widget.attrs['class']= 'form-control' self.fields['username'].widget.attrs['placeholder']= 'Username' self.fields['password'].widget.attrs['class']= 'form-control' self.fields['password'].widget.attrs['placeholder']= 'Password' There is views.py from django.shortcuts import render from django.http import HttpResponseRedirect from django.views.generic.edit import FormView from django.urls import reverse_lazy from django.utils.decorators import method_decorator from django.views.decorators.cache import never_cache from django.views.decorators.csrf import csrf_protect from django.contrib.auth import login from .forms import FormularioLogin class Login(FormView): template_name = 'login.html' form_class = FormularioLogin success_url = reverse_lazy('index') @method_decorator(csrf_protect) @method_decorator(never_cache) def dispatch(self, request, *args, **kwargs): if request.user.is_authenticated: return HttpResponseRedirect(self.get_success_url()) else: return super().dispatch(request, *args, **kwargs) def form_valid(self, form): login(self.request.form.get_user()) # --- Here is the problem --- return super().form_valid(form) -
forloop counter with htmx django
By following tutorials, I've managed to make a form which adds order items with htmx. Each new order item is a div row, not a table row. I also have a forloop counter for each row, but after a new order item is added, the counter doesn't update dynamically, only after the page refresh. The related (I think) code: order-create-update.html: {% extends 'partials/base.html' %} {% block content %} <style> .orderitem-form { border-bottom: 1px solid black; } </style> <div class="container-fluid" style="margin-top:80px"> {% include 'orders/order_form_full.html' %} <hr> <div class="row" style="margin-bottom:5px; border-bottom-style:solid; border-bottom-width:1px"> <div class="col-1" style="font-weight: bold">Item #</div> <div class="col-2" style="font-weight: bold">Material Category</div> <div class="col-2" style="font-weight: bold">Material Subcategory</div> <div class="col-4" style="font-weight: bold">Material</div> <div class="col-1" style="font-weight: bold">Quantity</div> <div class="col-1" style="font-weight: bold">Price/Unit</div> <div class="col-1" style="font-weight: bold">Action</div> </div> {% for orderitem in object.get_orderitems_children %} {% include "orders/order_item_inline.html" with object=orderitem %} {% endfor %} {% if new_orderitem_url %} <div id="orderitem-create"></div> {% endif %} <button type="button" class="btn btn-secondary" hx-get="{{ new_orderitem_url }}" hx-trigger="click" hx-target="#orderitem-create" hx-swap="beforeend">Add order item</button> </div> {% endblock %} order_item_inline.html: <div id="orderitem-{{ object.id }}"> <div class="row mt-1"> <div class="col-1">{{ forloop.counter }}</div> <div class="col-2">{{ object.material_category }}</div> <div class="col-2">{{ object.material_subcategory }}</div> <div class="col-4">{{ object.material }}</div> <div class="col-1">{{ object.quantity_ordered }}</div> <div class="col-1">{{ object.material.price }}</div> <div class="col-1"> <button type="button" class="btn btn-secondary … -
News scrapping in python
I want to get exact company name from given news article using regex in python?Can i get the code I have used this code result = re.search('\b'+company_name+'\b',string, flags=re.IGNORECASE) but this is not working for the company Local*..i am getting all the articles which contain local not local* -
How to preserve database table between tests in django?
How to preserve the database entries between tests in Django testing? python3 manage.py test tests --keepdb --keepdb preserves the database but not the table. The tables get flushed between the tests. Here is pseudo-code from django.test import TestCase class test_1(TestCase): def function_1(self): # Creates an entry in the database with file_path someModel.objects.create(file_path=file_path) class test_2(TestCase): def function_1(self): # needs the file_path to execute this function someModel.objects.get(file_path=file_path) <- this returns error since someModel does not have anything # Creates an entry in the database file_path_2 How can I preserve the database table between the tests so they can find the file path? This (talks about preserving the actual database and not the table) and this (creating a chain setUp does not work if I have 100´s tests that are chained) do not cover it. -
How to call a verification function from views to templates?
I have a function to check if the user is a staff: def allowed_user(request): if request.user.is_staff: return True In my template, I’m going to show this section only for staff users, but this is not working. {% url if not allowed_user %} <h1> Welcome to the show </h1> If do something like it, works: ```html {% if not request.user.is_staff %} <h1> Welcome to the show </h1> But I need to use a view function to clean my code because I’m probably going to add more conditionals. -
Get extra field via annotate in Django many to many relation
I have a m2m relation between a Feature model and the User model through an intermediary table. Feature model represents all the available features, and a User can enable or disable zero, one or more of them via web or api. When a user enables a feature the corresponding record is created in the intermediary table, when the user disables a feature the record is deleted. from django.contrib.auth.models import User class Feature(models.Model): name = models.CharField(max_length=50) user = models.ManyToManyField(User, through='FeatureUserM2M') ...other fields... class FeatureUserM2M(models.Model): user = models.ForeignKey(User, on_delete=models.CASCADE) feature = models.ForeignKey(Feature, on_delete=models.CASCADE) ...other fields... Supposing data like so Feature User Intermediary |id|name | |id|name | |id|user_id|feature_id| +--+------------+ +--+-------+ +--+-------+----------+ |1 |feature foo | |1 |user A | |1 |2 |1 | |2 |feature bar | |2 |user B | | | | | |3 |feature baz | | | | | | | | I need a result with all the available features, and for a given user, another field indicating if the user has the feature enabled or not (could be a boolean). Ideally, for "user A", the result I need is like: |user_id|feature_id|enabled | +-------+----------+--------+ |2 |1 | true | |2 |2 | false | |2 |3 | false … -
Django reverse order class.objects.all().order_by('-id') not working
I've tried showing my entries from the newest on django. This doesn't work. Django adds new entries to the last page and it doesn't let me order them by any other model either. Everything works just fine otherwise, the current list should only be reversed. My code is right now. def luokat(request): kaikkiluokat = luokka.objects.all().order_by('-id') I've tried these and none work: luokka.objects.all().order_by('-id').value() luokka.objects.order_by('-id') luokka.objects.values('id').order_by('-id') luokka.objects.all().order_by("-id") list(luokka.objects.all().order_by('-id')) None of the other models (name etc.) work either. It just keeps the original id-order. Weidly enough, for another class order_by works just fine. -
PYTZ dataobject is not being handled ok by the pendulum library
I have a 2 datetimes from "America/Santiago" timezone: 2022-09-04 00:00:00 2022-09-04 01:00:00 In "America/Santiago" they usually change the hour on the 4th Sept. This is at 2022-09-04 00h they say it is 2022-09-04 01:00:00. But this year because of elections the change of hour was delayed one week. So there is no change of time on the 4th. I need to convert the chilean time to UTC. Therefore: By using an updated version of pytz library, i succeed to convert this to a datetime object in "UTC": 2022-09-04 00:00:00-04:00 2022-09-04 01:00:00-04:00 The old version i was using did not had this into count because did not know about it. The problem is that i want to generate too and end time so the script i am reviewing from my department is using the following pendulum library: def my_next_hour(datetime_obj): //datetime_obj=2022-09-04 00:00:00-04:00 new_dt = pendulum.instance(datetime_obj).add(hours=1) return new_dt The output i get is: 2022-09-04T02:00:00-03:00 2022-09-04T02:00:00-03:00 As it can be seen, on the first record i do not know why it changes the -4 to -3. Anyway at the end it does the job. But as a consequence in the second record i do not get the plus hour. So i am asking to … -
I can't get the user to create session in Django
I'm doing a custom Login, using an AuthenticationForm, and I redefine the dispatch function to Authenticate it, so far so good, the problem is to create the session, I'm redefining the "form_valid" function, including the login function but I can't pass the "user" " to have django create the user's session. I try to get it from the "form" but I get this error. 'WSGIRequest' object has no attribute 'form' I have tried changing the methods def form_valid(self, form): login(self.request.POST.Pform.get_user()) return super().form_valid(form) -
Returning a list from a Django table query
Could someone help me with the last step of a query in a Django view please. I have two tables. class Item(models.Model): class Meta: verbose_name_plural = 'Items' name = models.CharField(max_length=30, null=True, blank=True) def __str__(self): return self.name class Select(models.Model): item = models.ForeignKey('Item', null=True, blank=True, on_delete=models.SET_NULL) name = models.CharField(max_length=30, null=True, blank=True) def __str__(self): return self.name Basically, Item is a category. Entries in the Select table reference Item as a category, Item can be either 'metrics', 'consumption' or 'demographics'. I want to retrieve all of the entries from the table Select which are in the 'demographics' category. I have the following code: list-to-pass = Select.objects.filter(item__name='demographics').values() This returns the following: <QuerySet [{'id': 1, 'item_id': 3, 'name': 'Age Breakdown'}, {'id': 2, 'item_id': 3, 'name': 'Work Status'}, {'id': 3, 'item_id': 3, 'name': 'Occupation'}, {'id': 4, 'item_id': 3, 'name': 'Industry'}, {'id': 5, 'item_id': 3, 'name': 'Nationality'}, {'id': 6, 'item_id': 3, 'name': 'Education'}, {'id': 7, 'item_id': 3, 'name': 'Commuting'}, {'id': 8, 'item_id': 3, 'name': 'Leave Home'}, {'id': 9, 'item_id': 3, 'name': 'Travel Time'}, {'id': 10, 'item_id': 3, 'name': 'Car Ownership'}, {'id': 11, 'item_id': 3, 'name': 'Internet'}, {'id': 12, 'item_id': 3, 'name': 'Affluence'}]> but what I would like is something like: ['Age Breakdown','Work Status','Occupation','Industry','Nationality','Education','Communting', 'Leave Home','Travel Time', 'Car Ownership','Internet', … -
'error : can only concatenate str/tuple(not "tuple/str) to str/tuple' error in adding fields to UserCreationForm
i tried to add new fields to UserCreationForm with using CustomUserCreationForm but i get this error TypeError:can only concatenate str(not"tuple") to str and when i change the field to str i got the other one, here is my code: forms.py: from django import forms from django.contrib.auth.forms import UserCreationForm, UserChangeForm from .models import CustomUser class CustomUserCreationform(UserCreationForm): #new UsercreationForm class Meta(UserCreationForm): #new meta for UserCreationForm model = CustomUser fields = UserCreationForm.Meta.fields + ('age',) class CustomUserChangeForm(UserChangeForm): #new UserChangeForm model = CustomUser fields = UserChangeForm.Meta.fields +('age',) admin.py: from django.contrib import admin from django.contrib.auth.admin import UserAdmin from .forms import CustomUserCreationForm, CustomUserChangeForm from .models import CustomUser class CustomUserAdmin(UserAdmin): #new UserAdmin to change defualt model add_form = CustomUserCreationForm form = CustomUserChangeForm model = CustomUser list_display = ['email','username','age','is_staff',] admin.site.register(CustomUser,CustomUserAdmin) models.py: from django.db import models from django.contrib.auth.models import AbstractUser class CustomUser(AbstractUser): age = models.PositiveIntegerField(null=True,blank=True) idk whats wrong with code can u help pls? -
Exception Value: Field 'id' expected a number but got 'create-room'
I am stuck with this error and cant' seem to figure out the solution. I was following a YouTube course on channel called "Traversy Media" and it's title is "Python Django 7 hour course" and this part is around 01:39 min into the video "CRUD" section. this is the home.html file {% extends 'main.html'%} {% block content %} <h1>Home PAGE</h1> <div> <a href="{% url 'create-room' %}">Create room </a> <div> {% for room in rooms %} <div> <span>@{{room.host.username}}</span> <h4> {{room.id}} -- <a href="{% url 'room' room.id %}">{{room.name}}</a> </h4> <small>{{room.topic.name}}</small> <hr /> </div> {% endfor %} </div> </div> {% endblock content %} There is a 'create room' link in the home page and this link redirects to a room-form.html file below which is a template for creating and updating a room. {% extends 'main.html' %} {% block content %} <div> <form method="post" action=""> {% csrf_token %} <input type="submit" value="Submit" /> </form> </div> {% endblock content %} here is the urls.py file from . import views from django.urls import path urlpatterns = [ path('', views.home, name='home'), path('room/<str:pk>/', views.room, name='room'), path('create-room/', views.createRoom, name='create-room'), ] here is the views.py file from django.shortcuts import render from .models import Room # Create your views here.= def home(request): … -
Post called in another HTML w django
So I have a form in a Home1.html, this form has submit that creates a file and lets you download it. But now, and this is the part I'm unsure of, I have created another button next to the "Download" that's called "list" this guides you to a Home2.html, this HTML has a grid (made w bootstrap) with the parameters that were filled before. I want every user that has pressed the submit button on this "Home1.html",I want the data they have submitted (I thought using my existing post method) to fill the missing blocks on the grid. for example if someone input their name Dylan in the previous form, on Home2.html I want the grid missing spaces to fill w this data name: user input (think of an excel sheet, name in A1,A2 the input) -
load template tags from module that is not a django app
wondering if there's a way to load template tags from a module that is not a django app. Templates are on s3 and our custom loader reads templates just fine from s3, but the {% load my_template_file %} call of the template cannot find the tag library (it's not registered, because django doesn't know where to find it). Of course, the solution would be to convert the module to a django app, and add that app to INSTALLED_APPS and to the loaders path, but I'm hoping for something that would allow an arbitrary folder from a module to be the lookup path for tags? -
Can I use mysql connector used in python , in django to connect to MySQL database
I am currently connecting django with MySQL using mysqlclient module,can I use mysql connector which is used in python to connect with MySQL database, here in django to enter deal with MySQL database I didn't actually tried it.did anyone have tried it -
Django derive model field based on other field value
I have a CustomUser model class Account(AbstractBaseUser): email = models.EmailField(verbose_name = "email", max_length = 60, unique = True) username = models.CharField(max_length = 30, unique = True) I am using a User creation form to register new users as follows, class RegistrationForm(UserCreationForm): email = forms.EmailField(max_length = 60, help_text = "This will be your login.") class Meta: model = Account fields = ("email", "username", "password1", "password2") What I want to do is remove the "username" from the form fields, so fields = ("email", "password1", "password2") And then when the user submits the form, I wish to insert a value into the username field based on the email provided by the user, for e.g. email = abc@xyz.com, then username = abc. How do I do this?
