github.com/wangyougui/gf/v2@v2.6.5/util/gvalid/internal/builtin/builtin_required_if.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  	"strings"
    12  
    13  	"github.com/wangyougui/gf/v2/util/gconv"
    14  	"github.com/wangyougui/gf/v2/util/gutil"
    15  )
    16  
    17  // RuleRequiredIf implements `required-if` rule:
    18  // Required unless all given field and its value are equal.
    19  //
    20  // Format:  required-if:field,value,...
    21  // Example: required-if: id,1,age,18
    22  type RuleRequiredIf struct{}
    23  
    24  func init() {
    25  	Register(RuleRequiredIf{})
    26  }
    27  
    28  func (r RuleRequiredIf) Name() string {
    29  	return "required-if"
    30  }
    31  
    32  func (r RuleRequiredIf) Message() string {
    33  	return "The {field} field is required"
    34  }
    35  
    36  func (r RuleRequiredIf) Run(in RunInput) error {
    37  	var (
    38  		required   = false
    39  		array      = strings.Split(in.RulePattern, ",")
    40  		foundValue interface{}
    41  	)
    42  	// It supports multiple field and value pairs.
    43  	if len(array)%2 == 0 {
    44  		for i := 0; i < len(array); {
    45  			tk := array[i]
    46  			tv := array[i+1]
    47  			_, foundValue = gutil.MapPossibleItemByKey(in.Data.Map(), tk)
    48  			if in.Option.CaseInsensitive {
    49  				required = strings.EqualFold(tv, gconv.String(foundValue))
    50  			} else {
    51  				required = strings.Compare(tv, gconv.String(foundValue)) == 0
    52  			}
    53  			if required {
    54  				break
    55  			}
    56  			i += 2
    57  		}
    58  	}
    59  
    60  	if required && isRequiredEmpty(in.Value.Val()) {
    61  		return errors.New(in.Message)
    62  	}
    63  	return nil
    64  }