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54
backend/ent/schema/setting.go
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54
backend/ent/schema/setting.go
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package schema
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import (
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"time"
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"entgo.io/ent"
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"entgo.io/ent/dialect"
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"entgo.io/ent/dialect/entsql"
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"entgo.io/ent/schema"
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"entgo.io/ent/schema/field"
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)
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// Setting holds the schema definition for the Setting entity.
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//
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// 删除策略:硬删除
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// Setting 使用硬删除而非软删除,原因如下:
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// - 系统设置是简单的键值对,删除即意味着恢复默认值
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// - 设置变更通常通过应用日志追踪,无需在数据库层面保留历史
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// - 保持表结构简洁,避免无效数据积累
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//
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// 如需设置变更审计,建议在更新/删除前将变更记录写入审计日志表。
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type Setting struct {
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ent.Schema
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}
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func (Setting) Annotations() []schema.Annotation {
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return []schema.Annotation{
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entsql.Annotation{Table: "settings"},
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}
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}
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func (Setting) Fields() []ent.Field {
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return []ent.Field{
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field.String("key").
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MaxLen(100).
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NotEmpty().
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Unique(),
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field.String("value").
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SchemaType(map[string]string{
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dialect.Postgres: "text",
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}),
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field.Time("updated_at").
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Default(time.Now).
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UpdateDefault(time.Now).
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SchemaType(map[string]string{
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dialect.Postgres: "timestamptz",
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}),
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}
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}
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func (Setting) Indexes() []ent.Index {
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// key 字段已在 Fields() 中声明 Unique(),无需额外索引
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return nil
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}
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