solher/zest

package zest

import (
    "net/http"

    "github.com/unrolled/render"
)

// Render is a unrolled/render based JSON/XML/HTML renderer, customized to increase
// the expressiveness of Zest API error rendering.
type Render struct {
    renderer *render.Render
}

// NewRender returns a new instance of Render.
func NewRender() *Render {
    return &Render{renderer: render.New()}
}

// JSONError forges and writes an APIError into the response writer.
func (r *Render) JSONError(w http.ResponseWriter, status int, apiError *APIError, err error) {
    if apiError == nil {
        apiError = &APIError{}
    }

    if err != nil {
        apiError.Raw = err.Error()
    }

    apiError.Status = status

    r.renderer.JSON(w, status, apiError)
}

// JSON writes the argument object into the response writer.
func (r *Render) JSON(w http.ResponseWriter, status int, object interface{}) {
    if object == nil {
        w.WriteHeader(status)
    } else {
        r.renderer.JSON(w, status, object)
    }
}