2023-06-07 23:09:51 +00:00
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import pdfkit
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2023-06-18 14:18:00 +00:00
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import datetime
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2023-07-02 13:51:28 +00:00
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import builtins
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2023-06-18 14:18:00 +00:00
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from decimal import Decimal
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2023-07-03 19:51:24 +00:00
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from typing import (
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Any,
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2023-07-07 21:29:42 +00:00
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Iterator
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2023-07-03 19:51:24 +00:00
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)
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2023-04-24 20:11:27 +00:00
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from django.db import models
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2023-05-14 15:14:44 +00:00
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from django.core.paginator import (
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Paginator,
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EmptyPage
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)
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from django.conf import settings
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2023-06-01 20:35:14 +00:00
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from django.core.validators import MinValueValidator
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2023-06-07 23:09:51 +00:00
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from django.template import (
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Template,
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Context
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)
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2023-07-02 13:51:28 +00:00
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from django.core.exceptions import ValidationError
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2023-07-03 19:51:24 +00:00
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from django.db.models.signals import m2m_changed
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2023-04-24 20:11:27 +00:00
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2023-05-10 19:47:03 +00:00
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from modelcluster.models import ClusterableModel
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from modelcluster.fields import ParentalKey
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from wagtail.admin.panels import (
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FieldPanel,
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InlinePanel
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)
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from wagtail.models import Page
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2023-05-13 22:23:19 +00:00
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from wagtail import fields as wagtail_fields
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from taggit.managers import TaggableManager
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2023-06-01 20:35:14 +00:00
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from phonenumber_field.modelfields import PhoneNumberField
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2023-06-18 14:18:00 +00:00
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from num2words import num2words
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2023-05-10 19:47:03 +00:00
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2023-06-22 21:44:22 +00:00
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from mailings.models import (
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OutgoingEmail,
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Attachment
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)
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2023-07-02 13:51:28 +00:00
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class BaseImageModel(models.Model):
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image = models.ImageField()
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is_main = models.BooleanField(default=False)
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class Meta:
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abstract = True
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2023-06-07 23:09:51 +00:00
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2023-04-24 20:11:27 +00:00
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2023-06-18 14:18:00 +00:00
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class PersonalData(models.Model):
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class Meta:
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abstract = True
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name = models.CharField(max_length=255, blank=True)
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surname = models.CharField(max_length=255, blank=True)
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email = models.EmailField(blank=True)
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phone = PhoneNumberField(blank=True)
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street = models.CharField(max_length=255, blank=True)
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city = models.CharField(max_length=255, blank=True)
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zip_code = models.CharField(max_length=120, blank=True)
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country = models.CharField(max_length=120, blank=True)
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@property
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def full_name(self):
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return f"{self.name} {self.surname}"
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@property
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def full_address(self):
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return f"{self.street}, {self.zip_code} {self.city}, {self.country}"
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class ProductAuthor(PersonalData):
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display_name = models.CharField(max_length=255, unique=True, blank=True)
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def __str__(self):
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return self.display_name
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class ProductCategory(ClusterableModel):
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name = models.CharField(max_length=255)
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def __str__(self):
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return self.name
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panels = [
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FieldPanel("name"),
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InlinePanel("category_params")
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]
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class CategoryParamTypeChoices(models.TextChoices):
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INT = "int"
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STRING = "str"
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FLOAT = "float"
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class ProductCategoryParam(ClusterableModel):
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category = ParentalKey(ProductCategory, on_delete=models.CASCADE, related_name="category_params")
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key = models.CharField(max_length=200)
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param_type = models.CharField(max_length=200, choices=CategoryParamTypeChoices.choices)
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def __str__(self):
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return self.key
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2023-07-02 13:51:28 +00:00
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panels = [
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FieldPanel("category"),
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FieldPanel("key"),
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FieldPanel("param_type"),
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InlinePanel("param_values")
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]
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2023-07-07 21:29:42 +00:00
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def get_available_values(self) -> Iterator[any]:
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for elem in self.param_values.all():
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yield elem.get_value()
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2023-07-02 13:51:28 +00:00
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class ProductCategoryParamValue(ClusterableModel):
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param = ParentalKey(ProductCategoryParam, on_delete=models.CASCADE, related_name="param_values")
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value = models.CharField(max_length=255)
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def get_value(self):
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try:
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func = getattr(builtins, self.param.param_type)
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return func(self.value)
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except ValueError:
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return
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def __str__(self):
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return f"{self.param.key}: {self.value}"
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2023-05-10 19:47:03 +00:00
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class ProductTemplate(ClusterableModel):
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category = models.ForeignKey(ProductCategory, on_delete=models.CASCADE)
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author = models.ForeignKey(ProductAuthor, on_delete=models.CASCADE)
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2023-04-27 21:06:28 +00:00
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title = models.CharField(max_length=255)
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code = models.CharField(max_length=255)
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2023-05-28 15:06:50 +00:00
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description = models.TextField(blank=True)
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2023-05-13 22:23:19 +00:00
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tags = TaggableManager()
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2023-05-10 19:47:03 +00:00
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def __str__(self):
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return self.title
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2023-07-02 13:51:28 +00:00
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@property
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def main_image(self):
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try:
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return self.template_images.get(is_main=True)
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except ProductImage.DoesNotExist:
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return self.template_images.first()
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2023-05-10 19:47:03 +00:00
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panels = [
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FieldPanel("category"),
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FieldPanel("author"),
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FieldPanel('title'),
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FieldPanel('code'),
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FieldPanel('description'),
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InlinePanel("template_images", label="Template Images"),
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FieldPanel("tags"),
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]
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2023-04-27 21:06:28 +00:00
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2023-07-02 13:51:28 +00:00
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class ProductTemplateImage(BaseImageModel):
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template = ParentalKey(
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ProductTemplate, on_delete=models.CASCADE, related_name="template_images"
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)
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image = models.ImageField()
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2023-07-02 13:51:28 +00:00
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is_main = models.BooleanField(default=False)
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2023-04-24 20:11:27 +00:00
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2023-07-10 20:36:11 +00:00
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class ProductManager(models.Manager):
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def get_or_create_by_params(self, params: list[ProductCategoryParamValue], template: ProductTemplate):
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product = self.filter(params__in=params).first()
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if not product:
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product = self.create(
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name=f"{template.title} - AUTOGENERATED",
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template=template,
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price=...,
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available=False
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)
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for param in params:
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product.params.add(param)
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return product
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2023-05-10 19:47:03 +00:00
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class Product(ClusterableModel):
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name = models.CharField(max_length=255, blank=True)
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2023-05-13 22:23:19 +00:00
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template = models.ForeignKey(ProductTemplate, on_delete=models.CASCADE, related_name="products")
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params = models.ManyToManyField(
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ProductCategoryParamValue, blank=True, through="ProductParam"
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)
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price = models.FloatField()
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available = models.BooleanField(default=True)
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2023-07-02 13:51:28 +00:00
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2023-05-10 19:47:03 +00:00
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panels = [
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FieldPanel("template"),
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FieldPanel("price"),
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FieldPanel("params"),
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2023-05-28 15:06:50 +00:00
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FieldPanel("available"),
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FieldPanel("name"),
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2023-07-02 13:51:28 +00:00
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InlinePanel("product_images", label="Variant Images"),
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2023-05-10 19:47:03 +00:00
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]
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2023-04-27 21:06:28 +00:00
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2023-05-14 15:14:44 +00:00
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@property
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def main_image(self):
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2023-07-02 13:51:28 +00:00
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try:
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return self.product_images.get(is_main=True)
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except ProductImage.DoesNotExist:
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return self.product_images.first()
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2023-05-14 15:14:44 +00:00
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2023-05-28 15:06:50 +00:00
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@property
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def tags(self):
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return self.template.tags.all()
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2023-06-18 14:18:00 +00:00
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@property
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def author(self):
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return self.template.author
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2023-05-28 15:06:50 +00:00
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@property
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def description(self):
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return self.info or self.template.description
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2023-05-10 19:47:03 +00:00
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@property
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def title(self):
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2023-05-28 15:06:50 +00:00
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return self.name or self.template.title
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2023-05-10 19:47:03 +00:00
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2023-07-02 13:51:28 +00:00
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class ProductImage(BaseImageModel):
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product = ParentalKey(
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"Product", on_delete=models.CASCADE, related_name="product_images"
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)
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class ProductParam(models.Model):
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product = ParentalKey(Product, on_delete=models.CASCADE, related_name="product_params")
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param_value = models.ForeignKey(ProductCategoryParamValue, on_delete=models.CASCADE)
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def save(self, *args, **kwargs):
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self.full_clean()
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return super().save(*args, **kwargs)
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2023-07-03 19:51:24 +00:00
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# SIGNALS
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def validate_param(sender, **kwargs):
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action = kwargs.pop("action")
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if action != "pre_add":
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return
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pk_set = kwargs.get("pk_set")
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product_instance = kwargs.get("instance")
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errors = []
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for pk in pk_set:
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try:
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param = ProductCategoryParamValue.objects.get(pk=pk).param
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except ProductCategoryParamValue.DoesNotExist:
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# TODO log this
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...
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count = product_instance.params.filter(productparam__param_value__param=param).count()
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if count >= 1:
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errors.append(ValueError("Product param with this key already exists."))
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if errors:
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raise ValidationError(errors)
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m2m_changed.connect(validate_param, Product.params.through)
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2023-05-13 22:23:19 +00:00
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class ProductListPage(Page):
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# TODO add filters
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description = wagtail_fields.RichTextField(blank=True)
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tags = TaggableManager(blank=True)
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def _get_items(self):
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if self.tags.all():
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2023-07-02 13:51:28 +00:00
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return ProductTemplate.objects.filter(tags__in=self.tags.all())
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return ProductTemplate.objects.all()
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2023-05-13 22:23:19 +00:00
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def get_context(self, request):
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context = super().get_context(request)
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2023-05-14 15:14:44 +00:00
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items = self._get_items()
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if not items:
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return context
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paginator = Paginator(items, settings.PRODUCTS_PER_PAGE)
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page_number = request.GET.get("page", 1)
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try:
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page = paginator.page(page_number)
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except EmptyPage:
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page = paginator.page(1)
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context["items"] = page.object_list
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context["page"] = page
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2023-05-13 22:23:19 +00:00
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return context
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content_panels = Page.content_panels + [
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FieldPanel("description"),
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FieldPanel("tags")
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]
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2023-06-01 20:35:14 +00:00
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class OrderProductManager(models.Manager):
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2023-06-18 14:18:00 +00:00
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def create_from_cart(self, items: dict[str, Product|int], order: models.Model):
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pks = []
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for item in items:
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if item["quantity"] < 1:
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# TODO - logging
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continue
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pk = self.create(
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product=item["product"],
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order=order,
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quantity=item["quantity"]
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).pk
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pks.append(pk)
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return self.filter(pk__in=pks)
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2023-06-01 20:35:14 +00:00
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class OrderProduct(models.Model):
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product = models.ForeignKey(Product, on_delete=models.CASCADE)
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order = models.ForeignKey("Order", on_delete=models.CASCADE, related_name="products")
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quantity = models.IntegerField(validators=[MinValueValidator(1)])
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objects = OrderProductManager()
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2023-06-07 23:09:51 +00:00
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class OrderManager(models.Manager):
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2023-06-18 14:18:00 +00:00
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def _get_order_number(self, author: ProductAuthor):
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number_of_prev_orders = OrderProduct.objects.filter(
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product__template__author=author
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).values("order").distinct().count()
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|
|
number_of_prev_orders += 1
|
|
|
|
year = datetime.datetime.now().year
|
|
|
|
return f"{author.id}/{number_of_prev_orders:06}/{year}"
|
|
|
|
|
2023-06-22 21:44:22 +00:00
|
|
|
def _send_notifications(
|
|
|
|
self, order: models.Model, author: ProductAuthor,
|
|
|
|
customer_data: dict[str, Any], docs: list[models.Model]
|
|
|
|
):
|
|
|
|
# for user
|
|
|
|
attachments = [
|
|
|
|
Attachment(
|
|
|
|
content=doc.generate_document({"customer_data": customer_data}),
|
|
|
|
contenttype="application/pdf",
|
|
|
|
name=f"{doc.template.doc_type}_{order.order_number}.pdf"
|
|
|
|
) for doc in docs
|
|
|
|
]
|
|
|
|
mail_subject = f"Wygenerowano umowę numer {order.order_number} z dnia {order.created_at.strftime('%d.%m.%Y')}"
|
|
|
|
user_mail = OutgoingEmail.objects.send(
|
|
|
|
recipient=customer_data["email"],
|
|
|
|
subject=mail_subject,
|
|
|
|
context = {
|
|
|
|
"docs": docs,
|
|
|
|
"order_number": order.order_number,
|
|
|
|
"customer_email": customer_data["email"],
|
|
|
|
}, sender=settings.DEFAULT_FROM_EMAIL,
|
|
|
|
template_name="order_created_user",
|
|
|
|
attachments=attachments
|
|
|
|
)
|
|
|
|
# for author
|
|
|
|
author_mail = OutgoingEmail.objects.send(
|
|
|
|
recipient=author.email,
|
|
|
|
subject=mail_subject,
|
|
|
|
context = {
|
|
|
|
"docs": docs,
|
|
|
|
"order_number": order.order_number,
|
|
|
|
"manufacturer_email": author.email,
|
|
|
|
}, sender=settings.DEFAULT_FROM_EMAIL,
|
|
|
|
template_name="order_created_author",
|
|
|
|
attachments=attachments
|
|
|
|
)
|
|
|
|
return user_mail is not None and author_mail is not None
|
|
|
|
|
2023-06-18 14:18:00 +00:00
|
|
|
def create_from_cart(
|
|
|
|
self, cart_items: list[dict[str, str|dict]],
|
|
|
|
payment_method: models.Model| None,
|
|
|
|
customer_data: dict[str, Any]
|
|
|
|
) -> models.QuerySet:
|
|
|
|
# split cart
|
|
|
|
orders_pks = []
|
|
|
|
|
|
|
|
payment_method = payment_method or PaymentMethod.objects.first()
|
2023-06-22 21:44:22 +00:00
|
|
|
doc_templates = DocumentTemplate.objects.filter(
|
|
|
|
doc_type__in=[DocumentTypeChoices.AGREEMENT, DocumentTypeChoices.RECEIPT]
|
|
|
|
)
|
2023-06-18 14:18:00 +00:00
|
|
|
|
|
|
|
for item in cart_items:
|
|
|
|
author = item["author"]
|
|
|
|
author_products = item["products"]
|
|
|
|
|
|
|
|
order = self.create(
|
|
|
|
payment_method=payment_method,
|
|
|
|
order_number=self._get_order_number(author)
|
|
|
|
)
|
|
|
|
OrderProduct.objects.create_from_cart(author_products, order)
|
|
|
|
orders_pks.append(order.pk)
|
2023-06-22 21:44:22 +00:00
|
|
|
docs = []
|
|
|
|
for template in doc_templates:
|
|
|
|
doc = OrderDocument.objects.create(
|
|
|
|
order=order, template=template
|
|
|
|
)
|
|
|
|
docs.append(doc)
|
|
|
|
sent = self._send_notifications(order, author, customer_data, docs)
|
|
|
|
|
|
|
|
if not sent:
|
|
|
|
# TODO - store data temporarily
|
|
|
|
raise Exception("Error while sending emails")
|
|
|
|
|
2023-06-18 14:18:00 +00:00
|
|
|
return Order.objects.filter(pk__in=orders_pks)
|
|
|
|
|
|
|
|
|
|
|
|
class PaymentMethod(models.Model):
|
|
|
|
name = models.CharField(max_length=255)
|
|
|
|
|
|
|
|
description = models.TextField(blank=True)
|
|
|
|
active = models.BooleanField(default=True)
|
2023-06-07 23:09:51 +00:00
|
|
|
|
|
|
|
|
2023-06-01 20:35:14 +00:00
|
|
|
class Order(models.Model):
|
2023-06-18 14:18:00 +00:00
|
|
|
payment_method = models.ForeignKey(PaymentMethod, on_delete=models.CASCADE)
|
2023-06-01 20:35:14 +00:00
|
|
|
created_at = models.DateTimeField(auto_now_add=True)
|
|
|
|
updated_at = models.DateTimeField(auto_now=True)
|
|
|
|
sent = models.BooleanField(default=False)
|
2023-06-18 14:18:00 +00:00
|
|
|
order_number = models.CharField(max_length=255, null=True)
|
|
|
|
|
2023-06-07 23:09:51 +00:00
|
|
|
objects = OrderManager()
|
|
|
|
|
|
|
|
@property
|
2023-06-18 14:18:00 +00:00
|
|
|
def manufacturer(self) -> str:
|
|
|
|
return self.products.first().product.author
|
|
|
|
|
|
|
|
@property
|
|
|
|
def total_price(self) -> Decimal:
|
|
|
|
return sum(
|
|
|
|
[order_product.product.price * order_product.quantity
|
|
|
|
for order_product in self.products.all()]
|
|
|
|
)
|
|
|
|
|
|
|
|
@property
|
|
|
|
def total_price_words(self) -> str:
|
|
|
|
return num2words(self.total_price, lang="pl", to="currency", currency="PLN")
|
|
|
|
|
|
|
|
@property
|
|
|
|
def payment_date(self) -> datetime.date:
|
|
|
|
return self.created_at.date() + datetime.timedelta(days=7)
|
2023-06-07 23:09:51 +00:00
|
|
|
|
|
|
|
|
|
|
|
class DocumentTypeChoices(models.TextChoices):
|
|
|
|
AGREEMENT = "agreement"
|
|
|
|
RECEIPT = "receipt"
|
|
|
|
|
|
|
|
|
|
|
|
class DocumentTemplate(models.Model):
|
|
|
|
name = models.CharField(max_length=255)
|
|
|
|
file = models.FileField(upload_to="documents")
|
2023-06-18 14:18:00 +00:00
|
|
|
# there may be only one document of each type
|
|
|
|
doc_type = models.CharField(max_length=255, choices=DocumentTypeChoices.choices, unique=True)
|
2023-06-07 23:39:06 +00:00
|
|
|
created_at = models.DateTimeField(auto_now_add=True, null=True)
|
2023-06-07 23:09:51 +00:00
|
|
|
|
|
|
|
def __str__(self):
|
|
|
|
return self.name
|
|
|
|
|
|
|
|
|
|
|
|
class OrderDocument(models.Model):
|
|
|
|
order = models.ForeignKey(Order, on_delete=models.CASCADE, related_name="documents")
|
|
|
|
template = models.ForeignKey(DocumentTemplate, on_delete=models.CASCADE)
|
|
|
|
|
|
|
|
def get_document_context(self):
|
|
|
|
_context = {
|
|
|
|
"order": self.order,
|
2023-06-18 14:18:00 +00:00
|
|
|
"author": self.order.manufacturer,
|
|
|
|
"order_products": self.order.products.all(),
|
|
|
|
"payment_data": self.order.payment_method,
|
2023-06-07 23:09:51 +00:00
|
|
|
}
|
|
|
|
return Context(_context)
|
|
|
|
|
2023-06-18 14:18:00 +00:00
|
|
|
def generate_document(self, extra_context: dict = None):
|
|
|
|
extra_context = extra_context or {}
|
|
|
|
context = self.get_document_context()
|
|
|
|
context.update(extra_context)
|
|
|
|
|
|
|
|
with open(self.template.file.path, "r", encoding="utf-8") as f:
|
2023-06-07 23:09:51 +00:00
|
|
|
content = f.read()
|
|
|
|
template = Template(content)
|
|
|
|
content = template.render(context)
|
|
|
|
return pdfkit.from_string(content, False)
|