PK ! * django_barcode/__init__.py__version__ = '0.1.0'PK ! ? ? django_barcode/admin.pyfrom django.contrib import admin
# Register your models here.
PK ! z` ` django_barcode/apps.pyfrom django.apps import AppConfig
class BarCodeConfig(AppConfig):
name = 'django_barcode'
PK ! !1 1 django_barcode/core.pyimport base64
from io import BytesIO
from uuid import UUID
from barcode.ean import EuropeanArticleNumber13 as BarcodeClass
from django.utils.html import mark_safe
class Barcode(BarcodeClass):
'''EAN13 standard numeric barcode'''
@property
def bars(self):
'''Barcode rendered as SVG (code displayed).'''
return mark_safe(self.render(text=False).decode('utf-8'))
@property
def barcode(self):
'''Barcode rendered as SVG (code displayed).'''
return mark_safe(self.render().decode('utf-8'))
PK ! R. django_barcode/fields.py
from uuid import uuid4
from django.db import models
from django.core import exceptions
from django.utils.translation import gettext_lazy as _
from .core import Barcode
from django.conf import settings
from django.core import checks
from django.utils.crypto import get_random_string
default_country = getattr(settings,'BARCODE_COUNTRY','950')
default_brand = getattr(settings,'BARCODE_BRAND','0000')
class BarcodeFieldDescriptor(object):
'''Field descriptor responsible for the seamless access of Barcode object properties'''
def __init__(self,_name,_class):
self._name = _name
self._class = _class
def __get__(self,instance=None,owner=None):
value = instance.__dict__[self._name]
if value is None:
return value
return self._class(value)
def __set__(self,instance,value):
instance.__dict__[self._name] = value
class BarcodeField(models.CharField):
'''Barcode model field based on a EAN13 standard'''
description = _('EAN13 Barcode.')
def generate_default(self):
return "".join([self.country,self.brand,get_random_string(5, '0123456789')])
def contribute_to_class(self, cls, name):
super(BarcodeField, self).contribute_to_class(cls, name)
setattr(cls, self.name, BarcodeFieldDescriptor(self.name,Barcode))
def __init__(self,country:str=default_country,brand:str=default_brand, **kwargs):
self.country = country
self.brand = brand
kwargs['max_length']=13
kwargs['default']=self.generate_default()
super().__init__(**kwargs)
def deconstruct(self):
name, path, args, kwargs = super().deconstruct()
del kwargs['max_length']
del kwargs['default']
if self.country != default_country:
kwargs['country'] = self.country
if self.brand != default_brand:
kwargs['brand'] = self.brand
return name, path, args, kwargs
def check(self, **kwargs):
return [
*super().check(**kwargs),
*self._check_country(),
*self._check_brand(),
]
def _check_country(self):
if len(self.country) is not 3:
return [
checks.Error(
"%s's country argument must have a 3 digits." % self.__class__.__name__,
obj=self,
id='fields.E201',
)
]
else:
return []
def _check_brand(self):
if len(self.brand) is not 4:
return [
checks.Error(
"%s's country argument must have a 4 digits." % self.__class__.__name__,
obj=self,
id='fields.E201',
)
]
else:
return []
PK ! e|9 django_barcode/models.pyfrom django.db import models
from .fields import BarcodeField
class Barcode(models.Model):
bc = BarcodeField()
class BarcodePK(models.Model):
bc = BarcodeField(primary_key=True)
class BarcodeUnique(models.Model):
bc = BarcodeField(unique=True)
class BarcodeCB(models.Model):
bc = BarcodeField(country='123',brand='1234')
class BarcodeAll(models.Model):
bc = BarcodeField(primary_key=True,unique=True,country='123',brand='1234')PK ! ] , django_barcode/templates/barcode_create.htmlBarcode Create
PK ! @I( , django_barcode/templates/barcode_delete.htmlBarcode Delete
Barcode Create
PK ! $GR R , django_barcode/templates/barcode_detail.html
ID
|
CODE |
BARS |
BARCODE |
| {{object.id}} |
{{object.bc}} |
{{object.bc.bars}} |
{{object.bc.barcode}} |
Update
DeletePK ! ) ݈ * django_barcode/templates/barcode_list.htmlBarcode List
PK ! , django_barcode/templates/barcode_update.htmlBarcode Update
PK ! \f f django_barcode/tests.pyfrom django.test import TestCase
from .models import Barcode, BarcodePK, BarcodeUnique, BarcodeCB, BarcodeAll
class BarcodeTestCase(TestCase):
def setUp(self):
Barcode.objects.create()
BarcodePK.objects.create()
BarcodeUnique.objects.create()
BarcodeCB.objects.create()
BarcodeAll.objects.create()
def test_barcode(self):
""" Test simple barcode creation """
bc = Barcode.objects.all().first()
bcpk = BarcodePK.objects.all().first()
bcu = BarcodeUnique.objects.all().first()
bccb = BarcodeCB.objects.all().first()
bcall = BarcodeAll.objects.all().first()
self.assertEqual(bc!=None,True)
self.assertEqual(bcpk!=None,True)
self.assertEqual(bcu!=None,True)
self.assertEqual(bccb!=None,True)
self.assertEqual(bcall!=None,True)
PK ! S django_barcode/urls.pyfrom django.urls import path
from . import views
urlpatterns = [
path('',views.BarcodeListView.as_view(), name="list"),
path('create', views.BarcodeCreateView.as_view(),name="create"),
path('detail/', views.BarcodeDetailView.as_view(), name="detail"),
path('update/', views.BarcodeUpdateView.as_view(),name="update"),
path('delete/',views.BarcodeDeleteView.as_view(),name="delete")
]
PK ! 7T T django_barcode/views.pyfrom .models import Barcode
from django.shortcuts import render
from django.urls import reverse_lazy
from django.views import generic
class BarcodeListView(generic.ListView):
queryset = Barcode.objects.all()
template_name = "barcode_list.html"
class BarcodeCreateView(generic.CreateView):
model = Barcode
fields = '__all__'
template_name = "barcode_create.html"
success_url = reverse_lazy('list')
class BarcodeDetailView(generic.DetailView):
model = Barcode
template_name = "barcode_detail.html"
class BarcodeUpdateView(generic.UpdateView):
model = Barcode
fields = '__all__'
template_name = "barcode_update.html"
success_url = reverse_lazy('list')
class BarcodeDeleteView(generic.DeleteView):
model = Barcode
template_name = "barcode_delete.html"
success_url = reverse_lazy('list')
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