74 lines
3.0 KiB
Go
74 lines
3.0 KiB
Go
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package base
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import "strings"
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// BaseExtensionField 结构体，类似于 Java 中的 BaseExtensionField
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type BaseExtensionField struct {
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ID int64 `gorm:"primaryKey;autoIncrement" json:"id"` // 主键ID
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TableName string `gorm:"type:varchar(255);not null" json:"table_name"`
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FieldName string `gorm:"type:varchar(255);not null" json:"field_name"`
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Extension string `gorm:"type:varchar(255)" json:"extension"`
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FieldValue string `gorm:"type:varchar(255)" json:"field_value"`
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OwnerID int64 `gorm:"index" json:"owner_id"` // 外键关联到主结构体
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}
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// ExtensionFieldManageable 接口定义获取扩展字段的方法
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type ExtensionFieldManageable interface {
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GetExtensionFields() []BaseExtensionField
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GetExtensionFieldsByFieldName(fieldName string) []BaseExtensionField
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GetExtensionFieldsByFieldNameAndExtension(fieldName, extension string) []BaseExtensionField
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GetExtensionFieldValueByFieldName(fieldName string) *string
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GetExtensionFieldValueByFieldNameAndExtension(fieldName, extension string) *string
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}
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// DefaultExtensionFieldManager 用于实现 ExtensionFieldManageable 的默认行为
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type DefaultExtensionFieldManager struct {
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ExtensionFields []BaseExtensionField `gorm:"foreignKey:OwnerID;references:ID" json:"extensions"` // 扩展字段列表
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ExtensionFieldManageable `gorm:"-"`
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}
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// GetExtensionFields 实现了 ExtensionFieldManageable 接口的 GetExtensionFields 方法
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func (m *DefaultExtensionFieldManager) GetExtensionFields() []BaseExtensionField {
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return m.ExtensionFields
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}
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// GetExtensionFieldsByFieldName 过滤指定字段名的扩展字段
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func (m *DefaultExtensionFieldManager) GetExtensionFieldsByFieldName(fieldName string) []BaseExtensionField {
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var result []BaseExtensionField
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for _, field := range m.ExtensionFields {
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if strings.EqualFold(field.FieldName, fieldName) {
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result = append(result, field)
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}
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}
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return result
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}
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// GetExtensionFieldsByFieldNameAndExtension 过滤指定字段名和扩展名的扩展字段
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func (m *DefaultExtensionFieldManager) GetExtensionFieldsByFieldNameAndExtension(fieldName, extension string) []BaseExtensionField {
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var result []BaseExtensionField
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for _, field := range m.GetExtensionFieldsByFieldName(fieldName) {
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if strings.EqualFold(field.Extension, extension) {
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result = append(result, field)
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}
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}
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return result
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}
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// GetExtensionFieldValueByFieldName 返回指定字段名的第一个扩展字段值
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func (m *DefaultExtensionFieldManager) GetExtensionFieldValueByFieldName(fieldName string) string {
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fields := m.GetExtensionFieldsByFieldName(fieldName)
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if len(fields) > 0 {
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return fields[0].FieldValue
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}
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return ""
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}
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// GetExtensionFieldValueByFieldNameAndExtension 返回指定字段名和扩展名的第一个扩展字段值
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func (m *DefaultExtensionFieldManager) GetExtensionFieldValueByFieldNameAndExtension(fieldName, extension string) string {
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fields := m.GetExtensionFieldsByFieldNameAndExtension(fieldName, extension)
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if len(fields) > 0 {
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return fields[0].FieldValue
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}
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return ""
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}
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