第一篇结束

.gitignore

@@ -0,0 +1,185 @@
+### Python template
+
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*,cover
+.hypothesis/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# IPython Notebook
+.ipynb_checkpoints
+
+# pyenv
+.python-version
+
+# celery beat schedule file
+celerybeat-schedule
+
+# dotenv
+.env
+
+# virtualenv
+venv/
+ENV/
+
+# Spyder project settings
+.spyderproject
+
+# Rope project settings
+.ropeproject
+### VirtualEnv template
+# Virtualenv
+# http://iamzed.com/2009/05/07/a-primer-on-virtualenv/
+[Bb]in
+[Ii]nclude
+[Ll]ib
+[Ll]ib64
+[Ll]ocal
+[Ss]cripts
+pyvenv.cfg
+.venv
+pip-selfcheck.json
+
+### JetBrains template
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# AWS User-specific
+.idea/**/aws.xml
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/artifacts
+# .idea/compiler.xml
+# .idea/jarRepositories.xml
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# SonarLint plugin
+.idea/sonarlint/
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+
+# idea folder, uncomment if you don't need it
+.idea

blog/admin.py

@@ -0,0 +1,21 @@
+from django.contrib import admin
+from .models import Blog
+
+# Register your models here.
+
+class BlogAdmin(admin.ModelAdmin):
+    list_display = ['title','author','content','author_name']
+    # author字段是关系表,必须用两条下划线指定对应属性
+    search_fields = ['title','content','author__username']
+
+    # readonly_fields = ['author']
+
+    # # 保存模型时执行的操作
+    # def save_model(self, request, obj, form, change):
+    #     if not change:
+    #         # 只有创建时指定作者
+    #         obj.author = request.user
+    #     super(BlogAdmin, self).save_model(request,obj,form,change)
+
+
+admin.site.register(Blog,BlogAdmin)

blog/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class BlogConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'blog'

blog/migrations/0001_initial.py

@@ -0,0 +1,26 @@
+# Generated by Django 4.1.1 on 2022-09-16 09:33
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Blog',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=200, verbose_name='标题')),
+                ('content', models.TextField(verbose_name='内容')),
+                ('author', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, to=settings.AUTH_USER_MODEL, verbose_name='作者')),
+            ],
+        ),
+    ]

blog/models.py

@@ -0,0 +1,17 @@
+from django.db import models
+
+# Create your models here.
+
+
+class Blog(models.Model):
+    title = models.CharField('标题',max_length=200)
+    author = models.ForeignKey('auth.User',on_delete=models.SET_NULL,null=True,
+                               verbose_name='作者')
+    content = models.TextField('内容')
+
+    def __str__(self):
+        return self.title
+
+    def author_name(self):
+        return '%s' % self.author.username
+    author_name.short_description = '作者名称'

blog/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

blog/urls.py

@@ -0,0 +1,12 @@
+from django.urls import path
+import blog.views as blog_views
+from blog.views.blogListView import BlogListView
+from blog.views.blogDetailView import BlogDetailView
+
+urlpatterns = [
+    # path('list/', blog_views.blog_list, name='list'),
+    # path('detail/<int:blog_id>/', blog_views.blog_detail, name='detail')
+
+    path('list/', BlogListView.as_view(), ),
+    path('detail/<int:pk>/', BlogDetailView.as_view())
+]

blog/views.py

@@ -0,0 +1,49 @@
+from django.http import JsonResponse,HttpResponse
+from blog.models import Blog
+from django.core.paginator import Paginator # 引入分页功能
+
+
+'''
+url中传入两个参数: page(页号)和page_size(每页最多记录数)
+参数错误时使用默认值
+'''
+def blog_list(request):
+    # 默认第1页
+    page = request.GET.get('page', 1)
+    # 每页默认为20条
+    page_size = request.GET.get('page_size', 20)
+    # 所有blog记录
+    blog_qs = Blog.objects.all()
+    # 根据页号和每页最多记录数提取对应记录
+    paginator = Paginator(blog_qs, page_size)
+    current_page = paginator.get_page(page)
+
+    blogs = current_page.object_list
+
+    resp = {
+        'blog_list': [
+            {
+                'id': blog.id,
+                'title': blog.title,
+            } for blog in blogs
+        ]
+    }
+    return HttpResponse(resp.values())
+
+
+def blog_detail(request,blog_id):
+    blog = Blog.objects.get(id=blog_id)
+    resp = {
+        'blog': [
+            {
+                'id': blog.id,
+                'title': blog.title,
+                'content': blog.content,
+                'author': {
+                    'id': blog.author.id,
+                    'username': blog.author.username,
+                }
+            }
+        ]
+    }
+    return HttpResponse(resp.values())

blog/views/blogDetailView.py

@@ -0,0 +1,24 @@
+from django.views.generic.detail import BaseDetailView
+from django.http import HttpResponse
+from blog.models import Blog
+
+
+class BlogDetailView(BaseDetailView):
+    model = Blog
+
+    def render_to_response(self,context):
+        blog = context['object']
+        data = {
+            'blog': {
+                'id': blog.id,
+                'title': blog.title,
+                'content': blog.content,
+                'author': {
+                    'id': blog.author.id,
+                    'username': blog.author.username,
+                }
+            }
+        }
+
+        return HttpResponse(data.values())
+

blog/views/blogListView.py

@@ -0,0 +1,36 @@
+from django.views.generic.list import BaseListView
+from blog.models import Blog
+from django.http import HttpResponse
+
+
+class BlogListView(BaseListView):
+    model = Blog
+    # 每页条数
+    paginate_by = 20
+
+    def get_paginate_by(self, queryset):
+        return self.request.GET.get('page_size') or self.paginate_by
+
+    def render_to_response(self, context):
+        paginator = context['paginator']
+        current_page = context['page_obj']
+        blogs = current_page.object_list
+
+        data = {
+            'blog_list': [
+                {
+                    'id': blog.id,
+                    'title': blog.title,
+                } for blog in blogs
+            ],
+            'paginator': {
+                'total_count': paginator.count,
+                'num_pages': paginator.num_pages,
+                'page_size': paginator.per_page,
+                'page_number': current_page.number,
+            }
+        }
+        return HttpResponse(data.values())
+
+
+

demo/asgi.py

@@ -0,0 +1,16 @@
+"""
+ASGI config for demo project.
+
+It exposes the ASGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.1/howto/deployment/asgi/
+"""
+
+import os
+
+from django.core.asgi import get_asgi_application
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'demo.settings')
+
+application = get_asgi_application()

demo/settings.py

@@ -0,0 +1,125 @@
+"""
+Django settings for demo project.
+
+Generated by 'django-admin startproject' using Django 4.1.1.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.1/topics/settings/
+
+For the full list of settings and their values, see
+https://docs.djangoproject.com/en/4.1/ref/settings/
+"""
+
+from pathlib import Path
+
+# Build paths inside the project like this: BASE_DIR / 'subdir'.
+BASE_DIR = Path(__file__).resolve().parent.parent
+
+
+# Quick-start development settings - unsuitable for production
+# See https://docs.djangoproject.com/en/4.1/howto/deployment/checklist/
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = 'django-insecure-=j-v#l)5rd-ifjvnq_=*dek8_807*@cffo8_1+9w*4+ndw#+b)'
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+ALLOWED_HOSTS = []
+
+
+# Application definition
+
+INSTALLED_APPS = [
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+    'blog'
+]
+
+MIDDLEWARE = [
+    'django.middleware.security.SecurityMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+]
+
+ROOT_URLCONF = 'demo.urls'
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [BASE_DIR / 'templates']
+        ,
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.debug',
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = 'demo.wsgi.application'
+
+
+# Database
+# https://docs.djangoproject.com/en/4.1/ref/settings/#databases
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': BASE_DIR / 'db.sqlite3',
+    }
+}
+
+
+# Password validation
+# https://docs.djangoproject.com/en/4.1/ref/settings/#auth-password-validators
+
+AUTH_PASSWORD_VALIDATORS = [
+    {
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
+    },
+]
+
+
+# Internationalization
+# https://docs.djangoproject.com/en/4.1/topics/i18n/
+
+LANGUAGE_CODE = 'en-us'
+
+TIME_ZONE = 'UTC'
+
+USE_I18N = True
+
+USE_TZ = True
+
+
+# Static files (CSS, JavaScript, Images)
+# https://docs.djangoproject.com/en/4.1/howto/static-files/
+
+STATIC_URL = 'static/'
+
+# Default primary key field type
+# https://docs.djangoproject.com/en/4.1/ref/settings/#default-auto-field
+
+DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

demo/urls.py

@@ -0,0 +1,22 @@
+"""demo URL Configuration
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/4.1/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
+"""
+from django.contrib import admin
+from django.urls import path,include
+
+urlpatterns = [
+    path('admin/', admin.site.urls),
+    path('blog/', include('blog.urls'))
+]

demo/wsgi.py

@@ -0,0 +1,16 @@
+"""
+WSGI config for demo project.
+
+It exposes the WSGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.1/howto/deployment/wsgi/
+"""
+
+import os
+
+from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'demo.settings')
+
+application = get_wsgi_application()

manage.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+"""Django's command-line utility for administrative tasks."""
+import os
+import sys
+
+
+def main():
+    """Run administrative tasks."""
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'demo.settings')
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError as exc:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        ) from exc
+    execute_from_command_line(sys.argv)
+
+
+if __name__ == '__main__':
+    main()

readme.md

@@ -0,0 +1 @@
+#### Django开发从入门到实践-段艺等编著