github.com/wangyougui/gf/v2@v2.6.5/util/gvalid/internal/builtin/builtin_date_format.go (about)

     1  // Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
     2  //
     3  // This Source Code Form is subject to the terms of the MIT License.
     4  // If a copy of the MIT was not distributed with this file,
     5  // You can obtain one at https://github.com/wangyougui/gf.
     6  
     7  package builtin
     8  
     9  import (
    10  	"errors"
    11  	"time"
    12  
    13  	"github.com/wangyougui/gf/v2/os/gtime"
    14  )
    15  
    16  // RuleDateFormat implements `date-format` rule:
    17  // Custom date format.
    18  //
    19  // Format: date-format:format
    20  type RuleDateFormat struct{}
    21  
    22  func init() {
    23  	Register(RuleDateFormat{})
    24  }
    25  
    26  func (r RuleDateFormat) Name() string {
    27  	return "date-format"
    28  }
    29  
    30  func (r RuleDateFormat) Message() string {
    31  	return "The {field} value `{value}` does not match the format: {pattern}"
    32  }
    33  
    34  func (r RuleDateFormat) Run(in RunInput) error {
    35  	type iTime interface {
    36  		Date() (year int, month time.Month, day int)
    37  		IsZero() bool
    38  	}
    39  	// support for time value, eg: gtime.Time/*gtime.Time, time.Time/*time.Time.
    40  	if obj, ok := in.Value.Val().(iTime); ok {
    41  		if obj.IsZero() {
    42  			return errors.New(in.Message)
    43  		}
    44  		return nil
    45  	}
    46  	if _, err := gtime.StrToTimeFormat(in.Value.String(), in.RulePattern); err != nil {
    47  		return errors.New(in.Message)
    48  	}
    49  	return nil
    50  }