Handling JSON arrays

[ysimonson]

Is it possible to bind from a JSON array to an array of structs implementing FieldMapper? It doesn't seem like it from browsing the source.

[mholt]

(Strange - why does GitHub say I both added and removed the 'question' label? It still shows up for me...)

Not directly, but you can type alias the array/slice like:

type MyTypes []MyType

Where MyTypes implements FieldMapper.

By the way, if you have thoughts about improving this package (related to this question or other things), feel free to comment here or in #28.

[ysimonson]

But doesn't FieldMap only allow you to define logic for deserializing an object? What would the FieldMapper definition look like for an array?

[mholt]

You can either implement FieldMapper and define your own Binder func, or you can implement the Binder interface directly (as long as you defined the type in the same package):

func (t *MyTypes) Bind(fieldName string, strVals []string, errs binding.Errors) binding.Errors {
    for _, v := range strVals {
        *t = append(t, v)
    }
    return errs
}

Or something like that. Since you're deserializing into a slice of structs, you would probably initialize a struct for each iteration of the for loop. Is that what you're asking for?

[ysimonson]

Yep. Thanks @mholt!