gorm/utils.go

106 lines
2.2 KiB
Go

package gorm
import (
"bytes"
"database/sql"
"fmt"
"reflect"
"strconv"
"strings"
"time"
)
func toSnake(s string) string {
buf := bytes.NewBufferString("")
for i, v := range s {
if i > 0 && v >= 'A' && v <= 'Z' {
buf.WriteRune('_')
}
buf.WriteRune(v)
}
return strings.ToLower(buf.String())
}
func snakeToUpperCamel(s string) string {
buf := bytes.NewBufferString("")
for _, v := range strings.Split(s, "_") {
if len(v) > 0 {
buf.WriteString(strings.ToUpper(v[:1]))
buf.WriteString(v[1:])
}
}
return buf.String()
}
func toSearchableMap(attrs ...interface{}) (result interface{}) {
if len(attrs) > 1 {
if str, ok := attrs[0].(string); ok {
result = map[string]interface{}{str: attrs[1]}
}
} else if len(attrs) == 1 {
if attr, ok := attrs[0].(map[string]interface{}); ok {
result = attr
}
if attr, ok := attrs[0].(interface{}); ok {
result = attr
}
}
return
}
func setFieldValue(field reflect.Value, value interface{}) bool {
if field.IsValid() && field.CanAddr() {
switch field.Kind() {
case reflect.Int, reflect.Int32, reflect.Int64:
if str, ok := value.(string); ok {
value, _ = strconv.Atoi(str)
}
field.SetInt(reflect.ValueOf(value).Int())
default:
if scanner, ok := field.Addr().Interface().(sql.Scanner); ok {
scanner.Scan(value)
} else {
field.Set(reflect.ValueOf(value))
}
}
return true
}
return false
}
func isBlank(value reflect.Value) bool {
switch value.Kind() {
case reflect.Int, reflect.Int64, reflect.Int32:
return value.Int() == 0
case reflect.String:
return value.String() == ""
case reflect.Slice:
return value.Len() == 0
case reflect.Struct:
time_value, is_time := value.Interface().(time.Time)
if is_time {
return time_value.IsZero()
} else {
_, is_scanner := reflect.New(value.Type()).Interface().(sql.Scanner)
if is_scanner {
return !value.FieldByName("Valid").Interface().(bool)
} else {
m := &Model{data: value.Interface()}
fields := m.columnsHasValue("other")
if len(fields) == 0 {
return true
}
}
}
}
return false
}
func debug(values ...interface{}) {
fmt.Println("*****************")
fmt.Println(values)
}