I'm trying to restrict a bidder that bids on certain project via a form from bidding neither less than the minimum budget that the project publisher has specifies neither greater than the maximum budget. After checking similar problems i found that overriding the clean method is the most suitable, but i'm facing " 'Bid' object has no attribute 'kwargs' " error
This is the clean method:
def clean(self):
if Project.objects.get(pk=self.kwargs['pk']).budget_min >= self.bid_amount or self.bid_amount >= Project.objects.get(pk=self.kwargs['pk']).budget_max:
raise ValidationError('the bid amount should be between the minimum and maximum project budget')
This is my models.py
# projects/models.py
from django.contrib.auth import get_user_model
from django.core.exceptions import ValidationError
from django.db import models
from django.urls import reverse
from django.core.validators import MaxValueValidator, MinLengthValidator, MinValueValidator
from upload_validator import FileTypeValidator
from .validators import user_directory_path, validate_file_size
from multiselectfield import MultiSelectField
class Project(models.Model):
title = models.CharField(
'Choose a title for your project',
max_length=255,
validators=[
MinLengthValidator(
15, 'Title must be descriptive and greater than 15 characters')
]
)
body = models.TextField('Tell us more about your project',
max_length=3000,
validators=[
MinLengthValidator(
10, 'Must be descriptive and greater than 10 characters')
]
)
upload_file = models.FileField(
upload_to=user_directory_path,
verbose_name="upload file:(Max file size: 2.5 MB)",
validators=[
validate_file_size,
FileTypeValidator(
allowed_types=[
'application/msword',
'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
'application/pdf',
'application/vnd.ms-powerpoint',
'application/vnd.openxmlformats-officedocument.presentationml.presentation',
'application/vnd.ms-excel',
'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
'image/tiff',
'image/jpeg',
'image/png'
],
allowed_extensions=['.doc', '.docx',
'.jpg', '.jpeg', '.png', '.pdf', '.zip']
)
],
null=True, blank=True
)
POSSIBLE_SKILLS = (
('Bash Scripting', 'Bash Scripting'), ('CSS', 'CSS'), ('Django', 'Django'),
('HTML', 'HTML'), ('JavaScript', 'JavaScript'), ('React', 'React'),
('Linux', 'Linux'), ('MongoDB', 'MongoDB'), ('NoSQL', 'NoSQL'),
('Powershell', 'Powershell'), ('Python', 'Python'),
('Shell Script', 'Shell Script')
)
skills = MultiSelectField(choices=POSSIBLE_SKILLS, default='')
PAYMENT_TYPE = (
('Fixed', 'Fixed'),
('Hourly', 'Hourly'),
)
payments = models.CharField(
'How do you want to pay?',
max_length=20, choices=PAYMENT_TYPE, default="Fixed")
budget_min = models.PositiveIntegerField(
'What is your estimated Minimum budget?',
default=10, validators=[MinValueValidator(1), MaxValueValidator(100000)])
budget_max = models.PositiveIntegerField(
'What is your estimated Maximum budget? :',
default=100, validators=[MinValueValidator(1), MaxValueValidator(100000)])
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)
# author is a FOREIGN KEY field in Project table, that refers to the PRIMARY KEY in CustomUser table
# the on_delete method used to tell django when deleting the author delete he's projects
author = models.ForeignKey(
get_user_model(),
on_delete=models.CASCADE,
)
# Shows up in the admin list
def __str__(self):
return self.title
def get_absolute_url(self):
"""[summary: where to go when a Project object is created.
]
Returns:
[description: this method should appear to return a string that can be used to refer
to the object over HTTP.]
"""
return reverse('project_detail', args=[str(self.id)])
class Bid(models.Model):
bid_amount = models.PositiveIntegerField(
default=10, validators=[MinValueValidator(1), MaxValueValidator(1000000)]
)
delivery_in = models.PositiveIntegerField(
default=1, validators=[MinValueValidator(1), MaxValueValidator(10000)]
)
describe_your_proposal = models.TextField(
max_length=144,
validators=[
MinLengthValidator(
20, "bid must be descriptive and greater than 20 characters")
]
)
STATUS_TYPE = (
('Approved', 'Approved'),
('Closed', 'Closed'),
('Pending', 'Pending'),
)
status = models.CharField(
'How do you want to pay?',
max_length=20, choices=STATUS_TYPE, default="Pending")
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)
# project is a FOREIGN KEY field in Bid table, that refers to
# the PRIMARY KEY in Project table using related name project.bids
# in templates to access bids of the project
# the on_delete method used to tell django when deleting the project delete it's bids
project = models.ForeignKey(
Project,
on_delete=models.CASCADE,
related_name='bids',
)
# author is a FOREIGN KEY field in Bid table, that refers to
# the PRIMARY KEY in CustomUser table
author = models.ForeignKey(
get_user_model(),
on_delete=models.CASCADE,
)
#
def clean(self):
if Project.objects.get(pk=self.kwargs['pk']).budget_min >= self.bid_amount or self.bid_amount >= Project.objects.get(pk=self.kwargs['pk']).budget_max:
raise ValidationError('the bid amount should be between the minimum and maximum project budget')
# Shows up in the admin list
def __str__(self):
return self.describe_your_proposal
def get_absolute_url(self):
"""[summary: where to go when a Bid object is created.
]
Returns:
[description: this method should appear to return a string that can be used
to refer to the object over HTTP.]
"""
return reverse('bid_detail', args=[str(self.id)])