Created
July 17, 2016 14:09
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package models | |
import ( | |
"reflect" | |
"strings" | |
) | |
func contains(ss []string, s string) bool { | |
for _, v := range ss { | |
if v == s { | |
return true | |
} | |
} | |
return false | |
} | |
func ParseFields(fields string) ([]string, map[string][]string) { | |
fieldsParse := strings.Split(fields, ",") | |
roop := make([]string, len(fieldsParse)) | |
copy(roop, fieldsParse) | |
nestFields := make(map[string][]string) | |
offset := 0 | |
for k, v := range roop { | |
l := strings.Split(v, ".") | |
ok := false | |
if len(l) > 1 { | |
_, ok = nestFields[l[0]] | |
nestFields[l[0]] = append(nestFields[l[0]], l[1]) | |
} | |
if ok { | |
fieldsParse = append(fieldsParse[:(k-offset)], fieldsParse[(k+1-offset):]...) | |
offset += 1 | |
} else { | |
fieldsParse[k-offset] = l[0] | |
} | |
} | |
return fieldsParse, nestFields | |
} | |
func FieldToMap(model User, fields []string, nestFields map[string][]string) map[string]interface{} { | |
u := make(map[string]interface{}) | |
p := reflect.MakeMap(model) | |
return p | |
ts, vs := reflect.TypeOf(model), reflect.ValueOf(model) | |
if len(nestFields) == 0 { | |
for i := 0; i < ts.NumField(); i++ { | |
var jsonKey string | |
field := ts.Field(i) | |
jsonTag := field.Tag.Get("json") | |
if jsonTag == "" { | |
jsonKey = field.Name | |
} else { | |
jsonKey = strings.Split(jsonTag, ",")[0] | |
} | |
if fields[0] == "*" || contains(fields, jsonKey) { | |
u[jsonKey] = vs.Field(i).Interface() | |
} | |
} | |
} else { | |
for i := 0; i < ts.NumField(); i++ { | |
var jsonKey string | |
field := ts.Field(i) | |
jsonTag := field.Tag.Get("json") | |
if jsonTag == "" { | |
jsonKey = field.Name | |
} else { | |
jsonKey = strings.Split(jsonTag, ",")[0] | |
} | |
if fields[0] == "*" || contains(fields, jsonKey) { | |
_, ok := nestFields[jsonKey] | |
if ok { | |
f, n := ParseFields(strings.Join(nestFields[jsonKey], ",")) | |
u[jsonKey] = FieldToMap(vs.Field(i).Interface(), f, n) | |
} else { | |
u[jsonKey] = vs.Field(i).Interface() | |
} | |
} | |
} | |
} | |
return u | |
} |
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