1 commit

django_test/articles/admin.py

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+from django.contrib import admin
+
+from .models import Tag, Article
+
+admin.site.register(Tag)
+admin.site.register(Article)

django_test/articles/apps.py

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+from django.apps import AppConfig
+
+
+class ArticlesConfig(AppConfig):
+    name = 'articles'

django_test/articles/forms.py

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+from django import forms
+from .models import Tag
+from .models import Article
+
+'''
+class ArticleForm(forms.Form):
+    name=forms.CharField(label = 'Название статьи', max_length = 100)
+    text=forms.CharField(label = 'Текст статьи')
+    tags=forms.ModelMultipleChoiceField(queryset=Tag.objects.all(),
+                                          widget=forms.CheckboxSelectMultiple())
+'''
+
+class  ArticleForm(forms.ModelForm):
+    article_name = forms.CharField(label = 'Название статьи')
+
+    class Meta:
+        model = Article
+        fields = '__all__'
+        # fields = ('article_name', 'article_text')
+        # exclude = ('tags')

django_test/articles/management/commands/db_data.py

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+from django.core.management.base import BaseCommand
+from articles.models import Article, Tag
+
+
+class Command(BaseCommand):
+
+    def handle(self, *args, **options):
+
+
+
+# Запрос в базу без условия!
+        print('DB command!')
+        articles = Article.objects.all()
+        print(type(articles), articles)
+        for art in articles:
+            print(f'Name: {art.article_name}, Text: {art.article_text}, Tags: {art.tag_number()}')
+
+#Запрос в базу c условием!
+#
+#     #   get
+#         art_ = Article.objects.get(article_name = 'Happy lion')
+#         print(art_)
+#     #  filter
+#         tags = Tag.objects.filter(tag_name = 'nature')
+#         print(tags)
+#
+# # Связанные поля
+#         print(art_.article_tag.all())
+#         print(art_.article_tag.first())
+#
+#
+# # Добавление в БД
+#         Tag.objects.create(tag_name = 'Travelling')
+#         tags = Tag.objects.all()
+#         print(tags)
+#
+# # Удаление
+#         tag = Tag.objects.filter(tag_name='Travelling')
+#         tag.delete()
+
+
+        tags = Tag.objects.all()
+        print(tags)

django_test/articles/management/commands/hello.py

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+from django.core.management.base import BaseCommand
+
+
+class Command(BaseCommand):
+
+    def handle(self, *args, **options):
+
+        print('Hello!')

django_test/articles/migrations/0001_initial.py

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+# Generated by Django 3.0.3 on 2020-03-17 09:11
+
+import datetime
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Tag',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('tag_name', models.CharField(max_length=100)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Article',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('article_name', models.CharField(max_length=100, null=True)),
+                ('article_text', models.CharField(max_length=1000, null=True)),
+                ('article_date', models.DateTimeField(default=datetime.datetime(2020, 3, 17, 9, 11, 35, 433347))),
+                ('article_img', models.ImageField(blank=True, null=True, upload_to='articles')),
+                ('article_tag', models.ManyToManyField(to='articles.Tag')),
+            ],
+        ),
+    ]

django_test/articles/models.py

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+from django.db import models
+from datetime import datetime
+import os
+from django.conf import settings
+
+# Create your models here.
+
+#https://djbook.ru/rel1.9/topics/db/models.html#model-inheritance - наследование моделей
+
+class Tag(models.Model, ):
+    tag_name = models.CharField(max_length = 100)
+
+    def __str__(self):
+        return f'{self.tag_name}'
+
+class Article(models.Model):
+    article_name = models.CharField(max_length = 100, null = True)
+    article_text = models.CharField(max_length = 1000, null = True)
+    article_date = models.DateTimeField(default = datetime.now())
+    article_tag  = models.ManyToManyField(Tag)
+    article_img = models.ImageField(upload_to = 'articles', null = True, blank = True)
+    #, default = os.path.join(settings.MEDIA_ROOT,'articles','happy_lion.jpg')
+
+    def tag_number(self):
+        return len(self.article_tag.all())
+
+
+    def is_tag_one(self):
+        if len(self.article_tag.all()) == 1:
+            return True
+        return False
+    '''
+    DataField - дата
+    TimeField - время
+    
+    Числовые типы:
+    IntegerField
+    PositeveIntegerField
+    FloatField
+    
+    Логические типы:
+    BooleanField
+    
+    Байтовый тип:
+    BinaryField
+    
+    Email:
+    EmailField
+    
+    URL:
+    URLField
+    
+    Image:
+    ImageField
+    '''
+
+    def __str__(self):
+        return f'{self.article_name}, published: {self.article_date}'
+