Django开发流程

创建project
django-admin startproject xxx .


创建app:
python manage.py startapp xxxxx


在setting.py中的installed_app配置里填入注册的应用
INSTALLED_APPS = (
    ...
    'rest_framework',
    'snippets',
)


改写models.py
from django.db import models
from pygments.lexers import get_all_lexers
from pygments.styles import get_all_styles


LEXERS = [item for item in get_all_lexers() if item[1]]
LANGUAGE_CHOICES = sorted([(item[1][0], item[0]) for item in LEXERS])
STYLE_CHOICES = sorted((item, item) for item in get_all_styles())




class Snippet(models.Model):
    created = models.DateTimeField(auto_now_add=True)
    title = models.CharField(max_length=100, blank=True, default='')
    code = models.TextField()
    linenos = models.BooleanField(default=False)
    language = models.CharField(choices=LANGUAGE_CHOICES, default='python', max_length=100)
    style = models.CharField(choices=STYLE_CHOICES, default='friendly', max_length=100)


    class Meta:
        ordering = ('created',)

执行python manage.py makemigrations 

       python manage.py migrate

进行数据迁移

改写好models.py中的模型后,需要在admin.py注册该类,然后才能在admin的管理界面来生成对象数据


生成数据库,python manage.py  makemigrate
python manage.py makemigrations snippets
python manage.py migrate




序列化,通过继承模型序列化类来是实现
class SnippetSerializer(serializers.ModelSerializer):
    class Meta:
        model = Snippet
        fields = ('id', 'title', 'code', 'linenos', 'language', 'style')


编写views.py 视图


然后,在 应用app xxxxx下的urls.py中映射各个视图和路径的关系


snippets/urls.py文件:


from django.conf.urls import url
from snippets import views


urlpatterns = [
    url(r'^snippets/$', views.snippet_list),
    url(r'^snippets/(?P<pk>[0-9]+)/$', views.snippet_detail),
]
同样的,路由映射也可以这么写:
url(r'^snippets/$', views.SnippetList.as_view()),


在project xxx下将app的urls模块注册
urlpatterns = [
    url(r'^', include('snippets.urls')),
]