While creating new products I'm getting such kind of error. Can someone help me?
class Product(models.Model):
user = models.ForeignKey(User, on_delete=models.SET_NULL, null=True)
name_geo = models.CharField(max_length=200, null=True, blank=True)
image = models.ImageField(null=True, blank=True, default='/placeholder.png')
brand = models.CharField(max_length=200, null=True, blank=True)
category = models.ForeignKey(Category, null=False, default=0, on_delete=models.CASCADE)
price = models.DecimalField(max_digits=7, decimal_places=2, null=True, blank=True)
countInStock = models.IntegerField(null=True, blank=True, default=0)
createdAt = models.DateTimeField(auto_now_add=True)
_id = models.AutoField(primary_key=True, editable=False)
def __str__(self):
return self.name_geo
class Category(models.Model):
_id = models.AutoField(primary_key=True, editable=False)
name = models.CharField(max_length=200, null=True, blank=True)
createdAt = models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.name
#api_view(['POST'])
def createProduct(request):
user = request.user
product = Product.objects.create(
user=user,
name_geo="Sample Name",
category="Sample Category",
price=0,
brand='Sample Brand',
countInStock=0,
)
serializer = ProductSerializer(product, many=False)
return Response(serializer.data)
Without separating category class in models.py everything works fine. I mean If i didn't use ForeignKey in Products class for category
It just has to be a Category Instance/Object
product = Product.objects.create(
user=user,
name_geo="Sample Name",
category=Category.objects.get_or_create(name="Sample Category"),
price=0,
brand='Sample Brand',
countInStock=0,
)
Notes:
You could just do a .get() or a .filter().first() if you don't want to create
If you use a form, you can get away with just the Category's PK/_id in the POST
this type of thing: f = form(request.POST) f.is_valid() f.save()
At the end that field will hold the PK/_id/Row# of the Category Obj
I used prefetch_related and Prefetch to create a list of areas ( main category), needs (subcategory), and product categories (subsubcategory) for my products.
filter_needs = Area.objects.filter(Exists(Need.objects.filter(category_need=OuterRef('pk'))))
products = Area.objects.prefetch_related(Prefetch('need_area',
queryset=filter_needs, to_attr='need_area__category_need__product'))
.filter(need_area__category_need__product__isnull=False).distinct()
models.py
class Area(models.Model):
title = models.CharField(max_length=75, blank=False)
body = models.CharField(max_length=150, default='-', blank=False)
publish = models.DateTimeField('publish', default=timezone.now)
class Need(models.Model):
title = models.CharField(max_length=75, blank=False, null=False, help_text='max 75 characters')
body = models.CharField(max_length=150, default='-', blank=False)
publish = models.DateTimeField(default=timezone.now)
need_area = models.ForeignKey(Area, on_delete=models.CASCADE, related_name='need_area')
class ProductCategory(models.Model):
title = models.CharField(max_length=400, blank=False, null=False, help_text='max 400 characters')
body = models.TextField(default='-')
publish = models.DateTimeField('publish', default=timezone.now)
category_area = models.ForeignKey(Area, on_delete=models.CASCADE, related_name='category_area', null=True)
category_need = models.ForeignKey(Need, on_delete=models.CASCADE, related_name='category_need', null=True)
class Product(models.Model):
id = models.AutoField(primary_key=True)
title = models.CharField(max_length=400, blank=False)
category = models.ForeignKey(ProductCategory, on_delete = models.CASCADE, blank=True, related_name='product')
Right now query renders all areas that contain the product but with all needs (even if there is no product in need). How can exclude all needs that are empty?
Try this:
from django.db.models import Prefetch
Area.objects.prefetch_related(
Prefetch(
"need_area"
queryset=Need.objects.filter(
category_need__products__isnull=False,
category_need__products__status=1,
).distinct(),
)
).filter(
need_area__category_need__products__isnull=False,
need_area__category_need__products__status=1,
).distinct()
You have to specify the same filter on the custom prefetch as with your outer filter.
This the views.py file.
How can i display the appointments made by the current logged in user?
def user(request):
client = Client.objects.all()
appointments = Appointment.objects.all()
context = {'appointments': appointments, 'client': client,
}
return render(request, 'users/user.html', context)
Here is my Models.py. I need to display the appointments by a user when they are logged in to their profile.
class Appointment(models.Model):
CATEGORY = (
('Plumbing', 'Plumbing'),
('Electrical', 'Electrical'),
('Cleaning', 'Cleaning'),
)
STATUS = (
('Pending', 'Pending'),
('Delivered', 'Delivered'),
)
user = models.ForeignKey(Client, null=True, on_delete=models.SET_NULL)
name = models.CharField(max_length=200, null=True)
worker = models.ForeignKey(Worker, null=True, on_delete=models.SET_NULL)
category = models.CharField(max_length=200, null=True, choices=CATEGORY)
task_date = models.DateField(_("Task Date"), blank=True, null=True)
task_location = models.CharField(max_length=200, null=True)
date_created = models.DateTimeField(auto_now_add=True, null=True)
status = models.CharField(max_length=200, null=True, choices=STATUS)
budget = models.FloatField(null=True)
task_description = models.CharField(max_length=1000, null=True)
task_image = models.ImageField(
null=True, blank=True, help_text='Optional.')
def __str__(self):
return str(self.user)
instead of using all() in your query use filter()
all() gives you all the entries in the table.
do something like this:
appointments = Appointment.objects.filter(user = request.user)
the left side "user" inside the filter must be a column in the Appointment model/table. you can pass multiple parameters inside the filter.
Yea it worked. but i had to create a one to one relatioship between appointment and User
Hello everyone I'm trying top build a task manager web app using django, I need to assign task to one or multiple users I'm using manytomany relation in models.py and in views.py I'm adding created_by user automatically.
My problem is that when I do that I see that no users selected in assigned users but if I add created by user from the form it worked well.
class Task(models.Model):
task_id = models.AutoField(primary_key=True)
shortcode = models.CharField(max_length=15, unique=True, blank=True, null=True)
task_name = models.CharField(max_length=200)
task_progress = models.ForeignKey(TaskProgressStatus, on_delete=models.CASCADE, blank=True, null=True)
customer_name = models.ForeignKey(Customer, on_delete=models.CASCADE, blank=True, null=True)
task_priority = models.ForeignKey(TaskPriority, on_delete=models.CASCADE)
assigned_to_employee = models.ManyToManyField(User)
paid = models.BooleanField(default=False)
on_account = models.BooleanField(default=False)
currency = models.ForeignKey(Currency, on_delete=models.CASCADE, blank=True, null=True)
net_amount = models.DecimalField(decimal_places=2, max_digits=20, blank=True, null=True)
vat = models.IntegerField(default=11)
quote_validity = models.CharField(max_length=200, default='1 Month from offer date')
delivered = models.BooleanField(default=False)
delivered_date = models.DateTimeField(null=True, blank=True)
creation_date = models.DateTimeField(auto_now_add=True)
modified_date = models.DateTimeField(auto_now=True)
due_date = models.DateTimeField(null=True, blank=True)
created_by = models.ForeignKey(User, related_name='created_by_username', on_delete=models.CASCADE, null=True, blank=True)
project = models.ForeignKey(Project, null=True, blank=True, on_delete=models.CASCADE)
file_name = models.FileField(upload_to='projects_files', null=True, blank=True)
notes = models.TextField()
def __str__(self):
return str(self.task_name)
#login_required
def addtask(request):
form = taskForm()
if request.method == 'POST':
form = taskForm(request.POST)
if form.is_valid():
newform = form.save(commit=False)
newform.created_by = request.user
newform.save()
return HttpResponseRedirect(request.path_info)
else:
context = {'form':form}
return render(request, 'tasks/add_task.html', context)
Update
As well pointed out by Ahmed I. Elsayed there is some inconsistency in the title of the question, since the created_by field is actually a ForeignKey, not a ManyToManyField.
That being said, your issue is actually with the foreign key.
My suggestion is to first of all be sure that your form is actually valid. You can do that by printing something inside the if form.is_valid() block.
Attached below is the models.py I used for my project,
I've attached the photos of the issue as well.
Issue 1
For some reason, all the contents of the tables are not being displayed.
In the first table, first content goes missing.
In the Second table, First and the second contents go missing
Issue 2
The Inline function doesn't work. I tried going through the documentation and several youtube videos to find out how to handle the situation but it didn't help much.
Issue 3
For the bug table, When I select the project name, How do I ensure that only the people I added to that project table are allowed to be selected?
Issue 4
Is there a way to extract the email ID from the Users page and and when I choose the name of the user in the Project page, the email Id will be automatically filled it?
Same way, In the issues page, when I choose the user, the email Id will be auto entered.
MODELS.py
from django.db import models
# Create your models here.
from django.contrib.auth.models import User
from django.db import models
from django.core.mail import EmailMessage
from django.contrib import admin
# Create your models here.
class Project(models.Model):
STATUS_CHOICE = (
('Project Manager', 'Project Manager'),
('Technician', 'Technician'),
('Tester', 'Tester')
)
STATUS_CHOICE_1 = (
('Work Assigned', 'Work Assigned'),
('Work in Progress', 'Work in Progress'),
('Testing', 'Testing'),
('Completed', 'Completed')
)
Project_Name = models.CharField(max_length=100)
Project_Description = models.CharField(max_length=100)
Admin_Name = models.ForeignKey(User, on_delete=models.CASCADE, related_name='User.Admin_Name_users+')
Admin_Mail_ID = models.EmailField(max_length=50)
Project_Manager_1 = models.ForeignKey(User, on_delete=models.CASCADE, related_name='User.Project_Manager_1_users+')
Project_Manager_1_Mail_ID = models.EmailField(max_length=50)
Project_Manager_2 = models.ForeignKey(User, on_delete=models.CASCADE, related_name='User.Project_Manager_2_users+', blank=True, null=True)
Project_Manager_2_Mail_ID = models.EmailField(max_length=50, blank=True, null=True)
Technician_1 = models.ForeignKey(User, on_delete=models.CASCADE, related_name='User.Technician_1_users+')
Technician_1_Mail_ID = models.EmailField(max_length=50)
Technician_2 = models.ForeignKey(User, on_delete=models.CASCADE, related_name='User.Technician_2_users+', blank=True, null=True)
Technician_2_Mail_ID = models.EmailField(max_length=50, blank=True, null=True)
Technician_3 = models.ForeignKey(User, on_delete=models.CASCADE, related_name='User.Technician_3_users+', blank=True, null=True)
Technician_3_Mail_ID = models.EmailField(max_length=50, blank=True, null=True)
Tester_1 = models.ForeignKey(User, on_delete=models.CASCADE, related_name='User.Tester_1_users+')
Tester_1_Mail_ID = models.EmailField(max_length=50, default='Example#gmail.com')
Additional_User_1 = models.ForeignKey(User, on_delete=models.CASCADE, related_name='User.Ad_1_users+', blank=True, null=True)
Additional_User_1_Type = models.CharField(max_length=18, choices=STATUS_CHOICE, blank=True, null=True)
Additional_User_1_Mail_ID = models.EmailField(max_length=50, blank=True, null=True)
Additional_User_2 = models.ForeignKey(User, on_delete=models.CASCADE, related_name='User.Ad_1_users+', blank=True, null=True)
Additional_User_2_Type = models.CharField(max_length=18, choices=STATUS_CHOICE, blank=True, null=True)
Additional_User_2_Mail_ID = models.EmailField(max_length=50, blank=True, null=True)
Additional_User_3 = models.ForeignKey(User, on_delete=models.CASCADE, related_name='User.Ad_1_users+', blank=True, null=True)
Additional_User_3_Type = models.CharField(max_length=18, choices=STATUS_CHOICE, blank=True, null=True)
Additional_User_3_Mail_ID = models.EmailField(max_length=50, blank=True, null=True)
Status_of_the_project = models.CharField(max_length=18, choices=STATUS_CHOICE_1)
Created = models.DateTimeField(auto_now_add=True, null=True, blank=True)
Finish_Date = models.DateTimeField(null=True, blank=True)
Supporting_Documents = models.FileField(null=True, blank=True)
class FlatPageAdmin(admin.ModelAdmin):
fieldsets = (
(None, {
'fields': ('Project_Name','Project_Description','Admin_Name','Admin_Mail_ID','Project_Manager_1','Project_Manager_1_Mail_ID',
'Technician_1','Technician_1_Mail_ID','Tester_1','Tester_1_Mail_ID','Status_of_the_project','Created','Finish_Date','Supporting_Documents',
)
}),
('Add More Users', {
'classes': ('collapse',),
'fields': ('Project_Manager_2','Project_Manager_2_Mail_ID','Technician_2','Technician_2_Mail_ID',
'Technician_3','Technician_3_Mail_ID','Additional_User_1','Additional_User_1_Type',
'Additional_User_1_Mail_ID','Additional_User_2','Additional_User_2_Type','Additional_User_2_Mail_ID',
'Additional_User_3','Additional_User_3_Type','Additional_User_3_Mail_ID'),
}),
)
def __str__(self):
return self.Project_Name
class Meta:
verbose_name_plural = "List Of Projects"
class Bug(models.Model):
STATUS_CHOICE = (
('Unassigned', 'Unassigned'),
('Assigned', 'Assigned'),
('Testing', 'Testing'),
('Tested', 'tested'),
('Fixed', 'Fixed')
)
STATUS_CHOICE_1 = (
('Bug', 'Bug'),
('Issue', 'Issue'),
('Enhancement', 'Enhancement'),
('Not an issue or bug', 'Not an issue or bug'),
('Fixed', 'Fixed')
)
Project = models.ForeignKey(Project, on_delete=models.CASCADE)
Issue_Title = models.CharField(max_length=50, blank=True, null=True)
Situation_Type = models.CharField(max_length=25, choices=STATUS_CHOICE_1)
Basic_Description = models.CharField(max_length=100)
Detailed_Description = models.TextField(default='The Description, here.')
Status = models.CharField(max_length=18, choices=STATUS_CHOICE)
Assigned_to = models.ForeignKey(User, on_delete=models.CASCADE)
Assigned_to_Mail_ID = models.EmailField(max_length=50, blank=True, null=True)
Admin_Mail_ID = models.EmailField(max_length=50, blank=True, null=True)
Reported_by = models.CharField(max_length=50, blank=True, null=True)
Reporters_Mail_ID = models.EmailField(max_length=50, blank=True, null=True)
Reported_Date = models.DateTimeField(null=True, blank=True)
Created = models.DateTimeField(auto_now_add=True, null=True, blank=True)
Updated = models.DateTimeField(auto_now=True, null=True, blank=True)
Deadline_Date = models.DateTimeField(null=True, blank=True)
Supporting_Documents_By_Reporter = models.FileField(null=True, blank=True)
Project_Managers_Comment = models.TextField(default='The Description, here.')
Supporting_Documents_by_Project_Manager = models.FileField(null=True, blank=True)
Technicians_Comment = models.TextField(default='The Description, here.')
Supporting_Documents_by_Technician = models.FileField(null=True, blank=True)
Testers_Comment = models.TextField(default='The Description, here.')
Supporting_Documents_by_Tester = models.FileField(null=True, blank=True)
def __str__(self):
return '{} ({}) [{}]'.format(self.Project, self.Situation_Type, self.Status, self.Issue_Title)
def save(self, force_insert=False, force_update=False, using=None,
update_fields=None):
if self.id:
user=self.Assigned_to
self.Assigned_to_Mail_ID=user.email
send_mail(self.Admin_Mail_ID, ass=self.Assigned_to_Mail_ID)
super(Bug, self).save()
class Meta:
verbose_name_plural = "Projects Tasks/Issues"
def send_mail(admin,ass):
email=EmailMessage('Changes made to Task','Changes have been made to one of your Task reports and we hereby request you to have a look at it at the earliest.', to=[admin,ass])
email.send()
I've also attached the admin.py file as well.
Admin.py
from django.contrib import admin
from .models import Bug, Project
from django.contrib.admin.models import LogEntry
admin.site.register(LogEntry)
# Register your models here.
class BugDisplay(admin.ModelAdmin):
list_display = ('Project', 'Status', 'Basic_Description', 'Assigned_to', 'Created', 'Updated', 'Issue_Title')
list_filter = ('Status', 'Assigned_to', 'Project')
search_fields = ('Reporters_Mail_ID', 'Reported_by', 'Basic_Description',)
admin.site.register(Bug, BugDisplay)
# Register your models here.
#admin.register(Project)
class ProjectDisplay(admin.ModelAdmin):
list_display = ('Project_Name','Admin_Name', 'Project_Manager_1', 'Status_of_the_project')
list_filter = ('Admin_Name', 'Status_of_the_project')
search_fields = ('Project_Name', 'Project_Description', 'Admin_Name', 'Admin_Mail_ID', 'Project_Manager_1 '
'Project_Manager_1_Mail_ID', 'Project_Manager_2 ', 'Project_Manager_2_Mail_ID',
'Technician_1',
'Technician_1_Mail_ID', 'Technician_2', 'Technician_2_Mail_ID', 'Technician_3',
'Technician_3_Mail_ID', 'Tester_1', 'Tester_1_Mail_ID', 'Additional_User_1', 'Additional_User_1_Type',
'Additional_User_1_Mail_ID', 'Additional_User_2', 'Additional_User_2_Type', 'Additional_User_2_Mail_ID',
'Additional_User_3', 'Additional_User_3_Type', 'Additional_User_3_Mail_ID', 'Status_of_the_project', 'Created',
'Finish_Date', 'Supporting_Documents')
As per your question please provide your admin inline class (referring to issue 2) and please elaborate for issue 1 and provide more details.
Regarding issue 2 you can override appropriate field using this. You can provide your custom queryset(by applying your filter conditions) to the foreign key field.
def formfield_for_foreignkey(self, db_field, request, **kwargs):
if db_field.name == 'your_field_name':
kwargs["queryset"] = your_custom_queryset_based_on_conditions
return super().formfield_for_foreignkey(db_field, request, **kwargs)
For issue 4, you want email Id to be auto filled based on user selection. This can be achieved using custom javascript.
Another way could be that, you do not show email field and while saving the record from project/issue admin you automatically fetch email id from users table and assign it to the object and save it.
You may have a look at this, to customize while saving the object from admin panel.
def save_model(self, request, obj, form, change):
email = your_method_to_find_email_for_user(obj.user_field)
obj.email_field = email
super().save_model(request,obj,form,change)