Custom enum type sql

[GGXXLL]

Your Question

In the following code, if you delete StatusEnum.String, the generate sql will be status="1" instead of status=1.
What happened?

package db_test

import (
    "testing"

    "gorm.io/driver/sqlite"
    "gorm.io/gorm"
)

type StatusEnum int64

const (
    StatusEnumEnable StatusEnum = iota
    StatusEnumDisable
)

var StatusEnumMap = map[StatusEnum]string{
    StatusEnumEnable:  "Enable",
    StatusEnumDisable: "Disable",
}

func (e StatusEnum) String() string {
    if v, ok := StatusEnumMap[e]; ok {
        return v
    }
    return "unknown"
}

type module struct {
    Status StatusEnum
}

func TestEnum(t *testing.T) {
    db, _ := gorm.Open(sqlite.Open(":memory:"))

    db.AutoMigrate(&module{})

    db.Model(&module{}).Create(&module{Status: StatusEnumDisable})

    var out *module
    // SELECT * FROM `modules` WHERE status=1 ORDER BY `modules`.`status` LIMIT 1
    db.Debug().Model(&module{}).Where("status=?", StatusEnumDisable).First(&out)

    t.Log(out)
    t.Logf("status value: %d, status string: %s", out.Status, out.Status)
}

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Expected answer