2018-11-18 08:13
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This question already has an answer here:

type ValidationModel struct {
    Name     string `json:"name" valid:"alpha,required~Name is required"`
    Email    string `json:"email" valid:"email~Enter a valid email.,required~Email is required."`
    Password string `json:"password" valid:"required~Password is required"`

validationModel := ValidationModel{}


_, err := govalidator.ValidateStruct(validationModel)

First I am validating the request body using govalidator.

type UserModel struct {
    ID           bson.ObjectId `json:"_id" bson:"_id"`
    Name         string        `json:"name" bson:"name"`
    Email        string        `json:"email" bson:"email"`
    Password     string        `json:"password,omitempty" bson:"-"`
    PasswordHash string        `json:"-" bson:"passwordHash"`
    Salt         string        `json:"-" bson:"salt"`
    Token        string        `json:"token,omitempty" bson:"-"`

user := models.UserModel{}


And after validating the request, again I am decoding the request body into user struct, but the request body has been read once using validationModel, so when I try to again decode it into user, it is not giving me any values.

I can think of two solutions here:

  1. Store request body in one separate variable, and use that variable two times.

  2. Copy validationModel values in user.

But I don't have any idea about to implement these approaches and which approach is best to follow. Or is there any other solution which can be implemented?

Thanks in advance.

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1条回答 默认 最新

  • dspld86684
    dspld86684 2018-11-18 08:45

    Storing the data can be easily done with ioutil.ReadAll():

    data, err := ioutil.ReadAll(r.Body)

    If you need the data back as a io.Reader (which is how the r.Body is), then you can use bytes.NewReader():

    reader := bytes.NewReader(data)

    And ACTUALLY, r.Body is a io.ReadCloser, so if you need that you can use ioutil.NopCloser() in conjunction with bytes.NewReader():

    reader := ioutil.NopCloser(bytes.NewReader(data))
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