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| package main | |
| import ( | |
| "bytes" | |
| "encoding/json" | |
| "fmt" | |
| "regexp" | |
| "time" | |
| ) | |
| // Regexp definitions | |
| var keyMatchRegex = regexp.MustCompile(`\"(\w+)\":`) | |
| var wordBarrierRegex = regexp.MustCompile(`(\w)([A-Z])`) | |
| type conventionalMarshaller struct { | |
| Value interface{} | |
| } | |
| func (c conventionalMarshaller) MarshalJSON() ([]byte, error) { | |
| marshalled, err := json.Marshal(c.Value) | |
| converted := keyMatchRegex.ReplaceAllFunc( | |
| marshalled, | |
| func(match []byte) []byte { | |
| return bytes.ToLower(wordBarrierRegex.ReplaceAll( | |
| match, | |
| []byte(`${1}_${2}`), | |
| )) | |
| }, | |
| ) | |
| return converted, err | |
| } | |
| type exampleModel struct { | |
| Title string | |
| Description string | |
| CreatedAt time.Time | |
| UpdatedAt time.Time | |
| IsActive bool | |
| } | |
| func main() { | |
| model := exampleModel{ | |
| Title: "Example Title", | |
| Description: "whatever", | |
| CreatedAt: time.Now(), | |
| UpdatedAt: time.Now(), | |
| IsActive: true, | |
| } | |
| encoded, _ := json.MarshalIndent(conventionalMarshaller{model}, "", " ") | |
| fmt.Println(string(encoded)) | |
| } |
How about "is_ur_l" for "IsURL" field? Or "is_ur_lactive" for "IsURLActive"?
I expected to have "is_url" and "is_url_active" respectively.
@bezigon Maybe that's also work.
(\w)([A-Z]) -> ([a-z_0-9])([A-Z])
This is actually outputting snake case, I've uploaded a gist giving lower camel case here https://gist.github.com/piersy/b9934790a8892db1a603820c0c23e4a7
Soooo, I know its been 3+ years and all, but I've turned this kind of behavior into a proper package:
https://github.com/Rican7/conjson
It incorporates both snake_case and camelCase transformations, among others. 😃
Thanks for the comments, suggestions, and forks on this original Gist everyone!
☝️ /cc: @bezigon @edwardstudy @glassonion1 @piersy @JoeyBoolean
(re-doing this since people actually get notified now... https://help.github.com/en/articles/about-gists#receiving-notifications-for-gist-activity)
Nice, thx !
It works very well.
I just change your regex for (\w{2,})([A-Z]).
I have interface with the key ID and your regex transform this in i_d
If someone has a better way :)
@Nyura95 try checking out this project instead:
https://github.com/Rican7/conjson
It's an expansion on this idea. 😃
Nice ! Thank you for sharing !
Output
{ "title": "Example Title", "description": "whatever", "created_at": "2015-11-17T20:43:31.046357698-05:00", "updated_at": "2015-11-17T20:43:31.046359788-05:00", "is_active": true }