I get this error while running syncdb
Can't seem to figure out the issue. Please help.
Error: One or more models did not validate:
store.business: Reverse query name for field 'logo' clashes with field 'ImageBank.business'. Add a related_name argument to the definition for 'logo'.
Here are my models:
class Business(models.Model):
business_type = models.ManyToManyField(BusinessType)
business_service_type = models.ManyToManyField(ServiceType)
establishment_type = models.ForeignKey(EstablishmentType)
logo = models.ForeignKey(ImageBank, related_name = '%(class)s_logocreated',)
phone = PhoneNumberField()
address = models.ForeignKey(Address)
website = models.URLField()
name = models.CharField(max_length=64)
def __unicode__(self):
return self.name
class ImageBank(models.Model):
business = models.ForeignKey('Business', related_name='%(class)s_business')
image = models.ImageField(upload_to="images/bank")
def url(self):
return self.image.url
def __unicode__(self):
return unicode(self.business) + " : " + unicode(self.image)
Store Model:
class Store(models.Model):
business = models.ForeignKey(Business,null=True, related_name='business_creator_set')
condition = models.CharField(verbose_name='What do customers have to do?',max_length = 50)
reward = models.CharField(verbose_name='What do customers win?',max_length = 50)
display = models.BooleanField(default=True)
date_created = models.DateTimeField(default=datetime.now)
def __unicode__(self):
return self.condition + ", " + self.reward
Try doing something like this:
...
class ImageBank(models.Model):
business = models.ForeignKey('Business', related_name='%(class)s_business')
....
Also, if that doesn't work, try changing the related_name on the Business.logo field to something not logo_id. logo_id is what the database uses for the field and it may be having a conflict.
Related
I have manytomanyfield inside my model.The manytomanyfield field lists the products in the products table.
I want to enter the amount for each product I choose. How can I relate manytomanyfield to floatfield field?
That's my model:
`
class TaskSources(models.Model):
id = models.AutoField(primary_key=True)
user_task_id = models.ForeignKey(UserTask,on_delete=models.CASCADE)
product_id = models.ManyToManyField(Product, verbose_name="Product",default=None)
product_amount = models.FloatField(max_length=255,verbose_name="Product Amount")
`
The form:
`
class TaskSourcesForm(forms.ModelForm):
class Meta:
model = TaskSources
fields = ['product_id', 'product_amount']
`
The views:
`
#login_required(login_url="login")
def addUserTask(request):
user_task_form = UserTaskForm(request.POST or None,initial={'user_id': request.user})
task_sources_form = TaskSourcesForm(request.POST or None)
if request.method == 'POST':
if user_task_form.is_valid():
user_task = user_task_form.save(commit=False)
user_task.author = request.user
user_task.save()
print(user_task.id)
if task_sources_form.is_valid():
task_sources = task_sources_form.save(commit=False)
task_sources.user_task_id = UserTask(id = user_task.id)
task_sources.save()
task_sources_form.save_m2m()
messages.success(request,"Task added successfully!")
return redirect(".")
context = {
"user_task_form" : user_task_form,
"task_sources_form" : task_sources_form,
}
return render(request,"user/addtask.html",context)
`
Thanks for care.
I tried associating the two fields with each other, but I could not succeed.
If I got it right I think that what you need is an intermediate table between your models. That way you can link an amount of a product to a TaskSource, something similar to this:
class Product(models.Model):
name = models.CharField(max_length=128)
def __str__(self):
return self.name
class ProductAmount(models.Model):
amount = models.FloatField(max_length=255,verbose_name="Product Amount")
product = models.ManyToManyField(Product, through='TaskSources')
def __str__(self):
return self.name
class UserTask(models.Model):
name = models.CharField(max_length=128)
def __str__(self):
return self.name
class TaskSources(models.Model):
id = models.AutoField(primary_key=True) # this is not really necessary
task = models.ForeignKey(UserTask,on_delete=models.CASCADE)
product_amount = models.ForeignKey(ProductAmount, on_delete=models.CASCADE)
I am trying to write a year level filter for my student profile list, however, the query returns an empty [].
This is my Attendance model, manager and custom queryset:
class AttendanceQuerySet(models.QuerySet):
def get_yearlevel(self, yearlevel):
return self.filter(BCEID__YearLevel = yearlevel)
class AttendanceManager(models.Manager):
def get_queryset(self):
return AttendanceQuerySet(self.model, using=self._db)
def get_yearlevel(self, yearlevel):
return self.get_queryset().get_yearlevel(yearlevel)
class Attendance(models.Model):
BCEID = models.OneToOneField(StudentProfile,primary_key=True,on_delete=models.CASCADE)
AttendanceRate = models.CharField(max_length=10)
objects = AttendanceManager()
def __unicode__(self):
return self.BCEID
StudentProfile model:
class StudentProfile(models.Model):
RelatedPersonName = models.CharField(max_length=10)
RelatedPersonFirstName = models.CharField(max_length=30)
RelatedPersonFamName = models.CharField(max_length=30)
StudentLegalName = models.CharField(max_length=30)
StudentFamName = models.CharField(max_length=30)
Email = models.CharField(max_length=130)
Street1 = models.TextField(max_length=30)
Suburb = models.CharField(max_length=30)
State = models.CharField(max_length=5)
PostCode = models.CharField(max_length=6)
StudentLegalName = models.CharField(max_length=30)
StudentFamName = models.CharField(max_length=30)
StudentNo = models.CharField(primary_key=True,max_length=10)
Class = models.CharField(max_length=6)
YearLevel = models.CharField(max_length=10)
objects = StudentProfileManager()
def __unicode__(self):
return self.StudentNo
and AttendanceListView (views.py)
class AttendanceListView(ListView):
model = Attendance
queryset = Attendance.objects.get_yearlevel("Year 8")
I manually queried the database to check if there were errors in my code, and got the same result: an empty array [].
SQL:
SELECT "student_attendance"."BCEID_id",
"student_attendance"."AttendanceRate"
FROM "student_attendance"
INNER JOIN "student_studentprofile"
ON ("student_attendance"."BCEID_id" = "student_studentprofile"."StudentNo")
WHERE "student_studentprofile"."YearLevel" = 'Year 8'
Please let me know what I am doing wrong here.
I'm using Django Tables 2 to display some information from a list of objects, including a column with a related object.
I'm trying to change the text displayed in the column that shows the related object.
My objects are:
Job
class Job(StatusModel):
'''
Model for jobs
'''
STATUS = statuses.JOB_STATUS
start_time = models.DateTimeField(_('time'), default=timezone.now)
pickup_address = models.TextField()
...
destination_address = models.TextField()
...
drivers = models.ManyToManyField(
'Drivers.Driver',
blank=True,
)
...
class Meta:
verbose_name = _('job')
verbose_name_plural = _('jobs')
ordering = ('start_time',)
def __str__(self):
return self.start_time.strftime('%d/%m/%y %H:%M') + ' from ' + self.pickup_address
def get_absolute_url(self):
return reverse('job_view', args=[str(self.id)])
...
Driver
class Driver(StatusModel):
...
current_job = models.ForeignKey(
Job,
on_delete=models.CASCADE,
blank=True,
null=True,
verbose_name=_('Current Job'),
related_name='current_job'
)
...
def __str__(self):
return self.user.get_full_name()
...
My table:
class DriverStatusListTable(tables.Table):
user = tables.Column(linkify=True, verbose_name=_('Driver'))
...
current_job = tables.Column(linkify=True)
class Meta:
model = Driver
...
I want the "current_job" column to show text different to the returned __str__ representation of the Job object - namely:
Job.start_time.strftime('%H:%M') + ' to ' + Job.destination_address,
but I can't work out how to do this, without changing the __str__ method on the Job object.
Any ideas?
Write a Table.render_foo to customize the value output.
Example:
class DriverStatusListTable(tables.Table):
user = tables.Column(linkify=True, verbose_name=_('Driver'))
current_job = tables.Column(linkify=True)
class Meta:
model = Driver
def render_current_job(self, value):
return "Use 'value' parameter here and return useful resposne"
Here is my models.py file.
from django.db import models
from django.contrib.auth.models import User
class image(models.Model):
name = models.CharField(max_length = 200)
src = models.URLField()
alt = models.CharField(max_length = 200)
points = models.IntegerField(default = 0)
id = models.CharField(max_length = 200, primary_key = True)
hotelId = models.IntegerField()
def __unicode__(self):
return self.name
class imagescore(models.Model):
user = models.ForeignKey(User)
image_id = models.CharField(max_length = 200)
score = models.IntegerField(default = 1)
createdTime = models.DateTimeField(auto_now_add =True)
def __unicode__(self):
if self.score < 0:
status = " rejected "
else:
status = "approved"
return (self.user+ status+ image_id)
pass
I would like to pass on to my template a table that is a result of the SQL Query:
select ei.id,ei.src, ei.hotelId , sum(score)
from eyeballing_image ei LEFT join eyeballing_imagescore eis on ei.id = eis.image_id
where user_id = request.user.id and ei.hotelId = 56565
group by
ei.id,ei.src, ei.hotelId
My app name is eyeballing. O tried using joins and filters bot i couldn't make it work.
Additionally, i tried making the sum(score) part into a separate dict and check the same in the template. Didn't work
Any help will be appreciated.
Your query has two problems, one in column name hotelId. you must use it in query in this way ei."hotelId".
Other problem is in condition user_id = request.user.id because you have not request in sql and you must replace it with a value.
Maybe another problem is in return (self.user + status + image_id) that must be return (self.user + self.status + self.image_id).
I am trying to understand how exactly query works on Django, i followed the tutorials it´s not working I am not sure what i am doing wrong.
When I run
BeneficientePagar.objects.filter(nome__contains="Joao Pedro")
it returns
"Choices are %s" %s (name, ",".join(available))) django.core.exceptions.FieldError: Cannot resolve keyword "nome into field. Choices are: ID, beneficiente, beneficiente_id,join, join_id, moeda
from django.db import models
# Create your models here.
class Moeda(models.Model):
moeda_ficticia = models.FloatField()
class Join(models.Model):
nome = models.CharField(max_length=150)
nascimento = models.DateField()
cpf = models.IntegerField(primary_key=True)
endereco = models.CharField(max_length=150)
email = models.EmailField()
def __str__(self):
return self.nome
class Beneficiente(models.Model):
ID = models.AutoField(primary_key=True)
nome = models.CharField(max_length=150)
CNPJ = models.IntegerField(max_length = 10)
def __str__(self):
return self.nome
class Favores(models.Model):
ID = models.AutoField(primary_key=True)
favor = models.CharField(max_length=150)
dataInserido = models.DateField()
usuarios = models.ForeignKey(Join)
def __str__(self):
return self.favor
class BeneficientePagar(models.Model):
ID = models.AutoField(primary_key=True)
moeda = models.IntegerField()
beneficiente = models.ForeignKey(Beneficiente)
join = models.ForeignKey(Join)
def __str__(self):
return self.ID
Thanks in advance
If using BeneficientPager, you need to do
BeneficientePagar.objects.filter(beneficient__nome__contains="Joao Pedro")
You are getting the error because nome is a field on Beneficiente, not BeneficientePagar.
You can either do
Beneficiente.objects.filter(nome__contains="Joao Pedro")
which will return a queryset of Beneficientes. Or if you need BeneficientePagar you can query through the foreign key.
BeneficientePagar.objects.filter(beneficiente__nome__contains="Joao Pedro")