python model 字段类型速查表
V=models.CharField(max_length=None[,
**options]) #varchar
V=models.EmailField([max_length=75,
**options]) #varchar
V=models.URLField([verify_exists=True,
max_length=200, **options]) #varchar
V=models.FileField(upload_to=None[,
max_length=100, **options]) #varchar
#upload_to 指定保存目录可带格式,
V=models.ImageField(upload_to=None[, height_field=None,
width_field=None, max_length=100,
**options])
V=models.IPAddressField([**options]) #varchar
V=models.FilePathField(path=None[, match=None,
recursive=False, max_length=100,
**options]) #varchar
V=models.SlugField([max_length=50,
**options]) #varchar,标签,内含索引
V=models.CommaSeparatedIntegerField(max_length=None[,
**options]) #varchar
V=models.IntegerField([**options]) #int