72 lines
2 KiB
Go
72 lines
2 KiB
Go
package form
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import (
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"fmt"
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"reflect"
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"strings"
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"time"
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)
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// Serialize returns a string containing all non-empty fields and values of a struct.
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func Serialize(f interface{}, all bool) string {
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v := reflect.ValueOf(f)
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if v.Kind() == reflect.Ptr {
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v = v.Elem()
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}
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if v.Kind() != reflect.Struct {
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return ""
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}
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q := make([]string, 0, v.NumField())
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// Iterate through all form fields.
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for i := 0; i < v.NumField(); i++ {
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fieldValue := v.Field(i)
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fieldName := v.Type().Field(i).Tag.Get("form")
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fieldInfo := v.Type().Field(i).Tag.Get("serialize")
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// Serialize field values as string.
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if fieldName != "" && (fieldInfo != "-" || all) {
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switch t := fieldValue.Interface().(type) {
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case time.Time:
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if val := fieldValue.Interface().(time.Time); !val.IsZero() {
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if val.Hour() == 0 && val.Minute() == 0 {
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q = append(q, fmt.Sprintf("%s:%s", fieldName, val.Format("2006-01-02")))
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} else {
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q = append(q, fmt.Sprintf("%s:\"%s\"", fieldName, val.String()))
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}
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}
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case int, int8, int16, int32, int64:
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if val := fieldValue.Int(); val != 0 {
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q = append(q, fmt.Sprintf("%s:%d", fieldName, val))
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}
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case uint, uint8, uint16, uint32, uint64:
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if val := fieldValue.Uint(); val != 0 {
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q = append(q, fmt.Sprintf("%s:%d", fieldName, val))
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}
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case float32, float64:
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if val := fieldValue.Float(); val != 0 {
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q = append(q, fmt.Sprintf("%s:%f", fieldName, val))
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}
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case string:
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if val := strings.TrimSpace(strings.ReplaceAll(fieldValue.String(), "\"", "")); val != "" {
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if strings.Contains(val, " ") {
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q = append(q, fmt.Sprintf("%s:\"%s\"", fieldName, val))
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} else {
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q = append(q, fmt.Sprintf("%s:%s", fieldName, val))
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}
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}
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case bool:
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if val := fieldValue.Bool(); val {
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q = append(q, fmt.Sprintf("%s:%t", fieldName, fieldValue.Bool()))
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}
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default:
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log.Warnf("can't serialize value of type %s from form field %s", t, fieldName)
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}
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}
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}
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return strings.Join(q, " ")
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}
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