Django entry (three) - Create Application

  After creating the project, you can create an application;

 

Execute python manage.py startapp myApp \ \ System32 under Windows \ cmd.exe: in the project directory C

After creating the application, you can see more than a directory under the project myApp

admin.py: Site Configuration

apps.py:

models.py: Model Configuration

test.py:

views.py: View

__init__.py: This is a tell python python package

 

After creating the application, you can activate the application:

Need to activate the application file Study settings.py file in the project directory folder in the configuration

 

 After activating the application, you can configure the model;

To configure the model to design the structure of the database table:

We designed two tables, the first table:

tablename：Grades

Field Name:

gname
gdate
ggirlnum
gboynum
isDelete

 

tablename：Student

Field Name:

sname
sgender
sage
scontend
IsDelete
sgrade

 

After a good data structure design table, you can define the model:

Moudels.py defined under myApp in:

class Grades(models.Model):
    gname = models.CharField(max_length=20)
    gdate = models.DateField()
    ggirlnum = models.IntegerField()
    gboynum = models.IntegerField()
    isDelete = models.BooleanField(default=False)

class Students(models.Model):
    sname = models.CharField(max_length=20)
    sgender = models.BooleanField(default=False)
    sage = models.IntegerField()
    scontend = models.CharField(max_length=20)
    isDelete = models.BooleanField(default=False)
    sgrade = models.ForeignKey('Grades') #关联外键

 

定义好模型之后，可以在数据库生成数据表：

1、迁移文件：python manage.py makemigrations