I am trying to iterate through all of my Task model objects and check whether they have employees attached to them. If they do have employees attached, then I want to cycle through the manytomany relation between projects and users and get each associated users email address. I am having difficulty accessing the email field. It keeps giving me 'not iterable' or "global name 'users__type' is not defined," depending on what I change. Am I missing something simple if my end result intended to be a string of user emails.
Models
from django.contrib.auth.models import User
from django.db import models
class CustomUser(models.Model):
user = models.OneToOneField(User, blank=True, null=True)
type = models.CharField(max_length=200, blank=True, null=True)
email = models.CharField(max_length=100, blank=True, null=True)
//Plus Other Custom User Fields//
class Task(models.Model):
users = models.ManyToManyField(CustomUser, blank=True, null=true)
//Plus Other Task Fields//
My other class
from django.models import Task
from django.models import CustomUser
from django.contrib.auth.models import User
def emailTaskList():
chosenPeople = []
notchosenPeople = []
chosenTask = Task.objects.filter(users__type = 'employee')
for e in chosen:
for d in e.users.all():
chosenPeople.append(d.email)
notchosenTask = Task.objects.filter(users__type != 'employee')
for a in notchosen:
for b in a.users.all():
notchosenPeople.append(b.email)
test = ' '.join(chosenPeople)
connection = mail.get_connection()
email = mail.EmailMessage('You have been assigned', test, [WebsiteEmail], [testRecipient])
email.send()
connection.close()
return
Thanks
Use the exclude() method instead of != comparison:
notchosen = Task.objects.exclude(users__type='employee')
Related
I am doing a group project for a bootcamp and we just started Django for the back-end. We also are using React for front-end. Our project is basically a knockoff reddit.
We have a User model:
`from django.db import models
class User(models.Model):
firstname = models.CharField(max_length=100)
lastname = models.CharField(max_length=100)
email = models.CharField(max_length=100, unique=True)
username = models.CharField(max_length=32, unique=True)
password = models.CharField(max_length=255)
def __str__(self):
return '%s' % (self.username)`
and a Post model:
`from django.db import models
from auth_api.models import User
class Post(models.Model):
user = models.ForeignKey(User, on_delete=models.CASCADE, null=True)
title = models.CharField(max_length=255)
formBody = models.TextField(null=True, blank=True)
imageURL = models.CharField(max_length=200, null=True, blank=True)
created = models.DateTimeField(auto_now_add=True)`
Our Post Serializers(pretty unfamiliar with this):
`from rest_framework import serializers
from .models import Post
class PostSerializer(serializers.ModelSerializer):
user = serializers.CharField(required=True)
class Meta:
model = Post
fields = ('id', 'user', 'title', 'formBody', 'imageURL', 'created',)`
And our Post Views:
`from django.shortcuts import render
from rest_framework import generics
from .serializers import PostSerializer
from .models import Post
from auth_api.models import User
class PostList(generics.ListCreateAPIView):
queryset = Post.objects.all().order_by('id')
serializer_class = PostSerializer
class PostDetail(generics.RetrieveUpdateDestroyAPIView):
queryset = Post.objects.all().order_by('id')
serializer_class = PostSerializer`
The idea was when a user created a post their info would be saved with the post so that way when we display the post we could say who created at. Also we could have a user profile that could see all of their posts. I assumed that what would happen is the user info would get saved inside a object in the user column, but the first way we tried only saved the userID and we couldn't access any of the users info. The second way(what we have now) keeps giving us this error: ValueError: Cannot assign "'1'": "Post.user" must be a "User" instance.The 1 is the userID that we pass in from the frontend of the user that created the post. I am unsure of where to go from here and have been stuck for a while on this. Hopefully I provided enough info
I've inherited from the AbstractBaseUser as follows:
class User(AbstractBaseUser):
"""
Main User model, inherits from AbstractBaseUser
"""
# Meta
email = models.EmailField(verbose_name='email', max_length=60, unique=True)
username = models.CharField(max_length=40, unique=True) # equals to email
date_joined = models.DateTimeField(verbose_name='date joined', auto_now_add=True)
last_login = models.DateTimeField(verbose_name='last login', auto_now=True)
employee_of = models.OneToOneField(Customer, on_delete=models.SET_NULL, null=True)
So each User is linked to one and only one Customer.
Now within a view I want to access the instance of the current logged in user within the request object and get the employee_of value to get a queryset that contains all users of that customer.
def render_employees(request):
"""
Renders the employees page of the dashboard
:param request:
:return:
"""
# Return the value for the current site for css specific classes
dashboard_site = 'employees'
# Query the employees
qs_employees = User.objects.filter(employee_of=request.user.employee_of) # doesn't find field
...
However the filter doesn't work because request.user.employ_of doesn't seem to return anything. My IDE even suggests e.g. username, date_joined etc. but not employee_of.
Why's that?
class Customer(models.Model):
"""
A table that stores static data about a customer, usually a legal company
"""
legal_name = models.CharField(max_length=50)
street = models.CharField(max_length=30)
street_number = models.CharField(max_length=3)
def __str__(self):
return self.legal_name
Update:
from django.db import models
from django.contrib.auth.models import AbstractBaseUser, BaseUserManager
from applications.customer.models import Customer
from django.conf import settings
BaseUser = settings.AUTH_USER_MODEL
class User(AbstractBaseUser):
"""
Main User model, inherits from AbstractBaseUser
"""
# Relations
user = models.OneToOneField(BaseUser, related_name='user_profile', on_delete=models.CASCADE, null=True) # link to default user model
employee_of = models.OneToOneField(Customer, on_delete=models.SET_NULL, null=True, blank=True)
I linked the user to the default user model via Django admin. However in the view im still not able to access employee_of within request.user
It seems that request.user is a different model. It's User model from django.contrib.auth. https://docs.djangoproject.com/en/4.0/ref/contrib/auth/#django.contrib.auth.models.User.
What you can do about it?
In our app we have UserProfile model that have OnetoOne relation to django User.
You can then store employee_of value there.
class UserProfile(AbstractBaseUser):
user = models.OnetoOneField("auth.User", related_name="user_profile", on_delete=models.CASCADE)
employee_of = models.OneToOneField(Customer, on_delete=models.SET_NULL, null=True)
and then access request.user employees using something like
request.user.user_profile.employee_of
I'm trying to model a rent contract in Django and use the admin form to insert and modify it.
Both owner and tenant can be companies (VAT number) or individuals (no VAT number). Companies and individuals are stored in two different models (Company and Individual).
I'm trying to solve this problem using Generic Foreign Key but I'm not able to show the tenant name in the admin page, only an integer field not friendly at all.
gestimm is the name of the app and that's my oversimplified models:
# my gestimm/models.py
#
from django.contrib.contenttypes.fields import GenericForeignKey
from django.contrib.contenttypes.models import ContentType
from django.db import models
class Individual(models.Model):
name = models.CharField(max_length=100, help_text='Name')
def __str__(self):
return self.name
class Company(models.Model):
name = models.CharField(max_length=100, help_text='Name')
def __str__(self):
return self.name
class Contract(models.Model):
description = models.CharField(max_length=30)
start = models.DateField()
stop = models.DateField()
def __str__(self):
return self.description
class Tenant(models.Model):
limit = models.Q(app_label='gestimm', model='individual') | models.Q(app_label='gestimm', model='company')
contract = models.ForeignKey(Contract, on_delete=models.CASCADE,
null=True, blank=True)
content_type = models.ForeignKey(ContentType, on_delete=models.PROTECT,
help_text='Tenant', null=True,
limit_choices_to=limit)
object_id = models.PositiveIntegerField(null=True)
tenant = GenericForeignKey('content_type', 'object_id')
How I tried to solve the problem:
# my gestimm/admin.py
#
from django.contrib import admin
from .models import Individual, Company, Contract, Tenant
class TenantInline(admin.StackedInline):
model = Tenant
extra = 1
class ContractAdmin(admin.ModelAdmin):
inlines = [TenantInline]
admin.site.register(Individual)
admin.site.register(Company)
admin.site.register(Contract, ContractAdmin)
I found some old discussions but none of the proposed solutions worked.
Problem solved: I installed django-grappelli.
My new admin.py:
class TenantInline(admin.TabularInline):
model = Tenant
extra = 1
related_lookup_fields = {
'generic': [['content_type', 'object_id']],
}
class ContractAdmin(admin.ModelAdmin):
inlines = [
TenantInline,
]
admin.site.register(Contract, ContractAdmin)
As intended
I want to add a department field on my User model. I am using sql server as my db. I did the following in models.py
class Employee(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE, db_column='user')
department = models.CharField(max_length=20, blank=True)
class Meta:
db_table = 'Employee'
Then, using stored procedure I can fill all the fields of User easily, but when I want to fill the extra field department, I get the error
RelatedObjectDoesNotExist at /fetched
User has no employee.
in views.py, where I retrieve the data from procedure:
q = User(id=result_set[i][0], username=result_set[i][1], is_staff=False,
first_name=result_set[i][4], last_name=result_set[i][3], email=result_set[i][8])
q.set_password(result_set[i][2])
q.employee.department = 'something'
q.save()
You can extend the AbstractUser to your model
In models.py
from django.contrib.auth.models import AbstractUser
class Employee(AbstractUser):
department = models.CharField(max_length=20, blank=True)
I have a model:
from django.contrib.auth.models import User
# Create your models here.
class Strategy(models.Model):
user = models.ForeignKey(User, on_delete=models.CASCADE)
mod_date = models.DateTimeField(auto_now=True)
strategy_name = models.CharField(max_length=20)
strategy = models.TextField()
position = models.TextField()
I want to get username = "leo".
But in Strategy's user is using user_id.
How to get "models.Strategy.objects.get" or "models.Strategy.objects.filter" using username = "leo"?
Thank you.
Duplicated question Django models filter by foreignkey
Strategy.objects.filter(user__username='leo').first()
or
try:
Strategy.objects.get(user__username='leo')
except Strategy.DoesNotExists():
print 'username Leo does not exists'
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