128 lines
2.5 KiB
Go
128 lines
2.5 KiB
Go
package models
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import (
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"database/sql/driver"
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"errors"
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"fmt"
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"strconv"
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"strings"
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)
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// GetAllModels 返回一个包含所有数据库模型实例的切片。
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// 这个函数用于在数据库初始化时自动迁移所有的表结构。
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func GetAllModels() []interface{} {
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return []interface{}{
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// Core Models
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&User{},
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&UserActionLog{},
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// Device Models
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&Device{},
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&AreaController{},
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&DeviceTemplate{},
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&SensorData{},
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&DeviceCommandLog{},
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// Plan & Task Models
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&Plan{},
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&SubPlan{},
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&Task{},
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&PlanExecutionLog{},
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&TaskExecutionLog{},
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&PendingTask{},
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&PendingCollection{},
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// Farm Asset Models
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&PigHouse{},
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&Pen{},
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// Pig & Batch Models
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&PigBatch{},
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&PigBatchLog{},
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&WeighingBatch{},
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&WeighingRecord{},
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&PigTransferLog{},
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&PigSickLog{},
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// Pig Buy & Sell
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&PigPurchase{},
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&PigSale{},
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// Feed Models
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&RawMaterial{},
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&RawMaterialPurchase{},
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&RawMaterialStockLog{},
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&FeedFormula{},
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&FeedFormulaComponent{},
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&FeedUsageRecord{},
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// Medication Models
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&Medication{},
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&MedicationLog{},
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}
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}
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// UintArray 是一个自定义类型，代表 uint 的切片。
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// 它实现了 gorm.Scanner 和 driver.Valuer 接口，
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// 以便能与数据库的 bigint[] 类型进行原生映射。
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type UintArray []uint
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// Value 实现了 driver.Valuer 接口。
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// 它告诉 GORM 如何将 UintArray ([]) 转换为数据库能够理解的格式。
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func (a UintArray) Value() (driver.Value, error) {
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if a == nil {
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return "{}", nil
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}
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var b strings.Builder
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b.WriteString("{")
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for i, v := range a {
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if i > 0 {
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b.WriteString(",")
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}
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b.WriteString(strconv.FormatUint(uint64(v), 10))
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}
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b.WriteString("}")
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return b.String(), nil
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}
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// Scan 实现了 gorm.Scanner 接口。
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// 它告诉 GORM 如何将从数据库读取的数据转换为我们的 UintArray ([])。
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func (a *UintArray) Scan(src interface{}) error {
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if src == nil {
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*a = nil
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return nil
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}
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var srcStr string
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switch v := src.(type) {
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case []byte:
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srcStr = string(v)
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case string:
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srcStr = v
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default:
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return errors.New("无法扫描非字符串或字节类型的源到 UintArray")
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}
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// 去掉花括号
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srcStr = strings.Trim(srcStr, "{}")
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if srcStr == "" {
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*a = []uint{}
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return nil
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}
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// 按逗号分割
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parts := strings.Split(srcStr, ",")
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arr := make([]uint, len(parts))
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for i, p := range parts {
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val, err := strconv.ParseUint(p, 10, 64)
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if err != nil {
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return fmt.Errorf("解析 UintArray 元素失败: %w", err)
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}
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arr[i] = uint(val)
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}
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*a = arr
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return nil
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}
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