go-ignore-field-when-parsing-struct

how to ignore a field in a struct when some data is being parsed into the struct

tags: learning go programming

content

• im seeing this code:

type userSignupForm struct {
    Name string `form:"name"`
    Email string `form:"email"`
    Password string `form:"password"`
    validator.Validator `form:"-"`
}

• the form is next to the fields in the struct is called struct tags

• struct tags tell parsing library how to map some data to struct

  • in this case, it tells Go how to map form fields to userSignupForm struct fields

• form:"-" tells the parser to ignore this field

• this is because validator is just something that’s being attached to userSignupForm model, but it’s not a data field that’s coming from the form

  • it’s not meant to be populated from the form
  • it’s internally used in the application’s logic

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