Friday, September 6, 2019

Re: AttributeError 'QuerySet' object has no attribute 'expenses'

Hi, 

Thanks for the help.

The header for each model is # out, so is not read when the code parsed, it is just to help me identify the models.
I only have 3 models Project, Category and Expense.

Best wishes,

Kean

On 6 Sep 2019, at 20:04, Bhoopesh sisoudiya <bhoop23sis@gmail.com> wrote:

Hi kean,
    Please check Expenses Class is not Manager
    Please make Manager Class.


Thanks
Bhoopesh sisoudiya

On Sat, Sep 7, 2019, 12:20 AM Kean <keanld1@gmail.com> wrote:
Hi, 

New to Django. when navigating to the reqired view, I get the error above.

urls.py

path('businesslogin/businessadmin/busproject', views.projectdetail, name='projectdetail'),

views.py

def projectdetail(request):
    project = Project.objects.all()
    return render(request, 'busprojectdetail.html', {'project': project, 'expense_list': project.expenses.all()})

models.py

# Project model

class Project(models.Model):
    name = models.CharField(max_length=100)
    budget = IntegerField()

    def save(self, *args, **kwargs):
        self.name
        super(Project, self).save(*args, **kwargs)

# Category manager model


class Category(models.Model):
    project = models.ForeignKey(
        Project, on_delete=models.CASCADE)
    name = models.CharField(max_length=150)


# Expenses manager model

class Expense(models.Model):
    project = models.ForeignKey(
        Project, on_delete=models.CASCADE, related_name='expenses')
    title = models.CharField(max_length=100)
    amount = models.DecimalField(max_digits=8, decimal_places=2)
    category = models.ForeignKey(Category, on_delete=models.CASCADE)

the error is as follows:


Exception Type:AttributeError
Exception Value:
'QuerySet' object has no attribute 'expenses'
Exception Location:/Users/ProductionEnv/Desktop/test/test1/dev/core/views.py in projectdetail, line 238

Please can anyone help?

Best 

K


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