模型

Model API reference. For introductory material, see 模型.

• 模型字段参考
• Field attribute reference
• Model index reference
• Constraints reference
• Model _meta API
• 关系对象参考
• Model class reference
• Model Meta options
• Model instance reference
• QuerySet API reference
• Lookup API reference
• Query Expressions
• Conditional Expressions
• Database Functions