Package gorilla/schema fills a struct with form values.
Go
Latest commit 0164a00 Aug 17, 2016 @kisielk kisielk committed on GitHub Tidy up example in README.md

README.md

schema

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Package gorilla/schema fills a struct with form values.

Example

Here's a quick example: we parse POST form values and then decode them into a struct:

// Set a Decoder instance as a package global, because it caches 
// meta-data about structs, and an instance can be shared safely.
var decoder = schema.NewDecoder()

type Person struct {
    Name  string
    Phone string
}

func MyHandler(w http.ResponseWriter, r *http.Request) {
    err := r.ParseForm()
    if err != nil {
        // Handle error
    }

    var person Person

    // r.PostForm is a map of our POST form values
    err := decoder.Decode(&person, r.PostForm)
    if err != nil {
        // Handle error
    }

    // Do something with person.Name or person.Phone
}

To define custom names for fields, use a struct tag "schema". To not populate certain fields, use a dash for the name and it will be ignored:

type Person struct {
    Name  string `schema:"name"`  // custom name
    Phone string `schema:"phone"` // custom name
    Admin bool   `schema:"-"`     // this field is never set
}

The supported field types in the destination struct are:

  • bool
  • float variants (float32, float64)
  • int variants (int, int8, int16, int32, int64)
  • string
  • uint variants (uint, uint8, uint16, uint32, uint64)
  • struct
  • a pointer to one of the above types
  • a slice or a pointer to a slice of one of the above types

Unsupported types are simply ignored, however custom types can be registered to be converted.

More examples are available on the Gorilla website: http://www.gorillatoolkit.org/pkg/schema

License

BSD licensed. See the LICENSE file for details.