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package jsonapi
import (
"encoding/json"
"fmt"
"io"
)
// MarshalErrors writes a JSON API response using the given `[]error`.
//
// For more information on JSON API error payloads, see the spec here:
// http://jsonapi.org/format/#document-top-level
// and here: http://jsonapi.org/format/#error-objects.
func MarshalErrors(w io.Writer, errorObjects []*ErrorObject) error {
if err := json.NewEncoder(w).Encode(&ErrorsPayload{Errors: errorObjects}); err != nil {
return err
}
return nil
}
// ErrorsPayload is a serializer struct for representing a valid JSON API errors payload.
type ErrorsPayload struct {
Errors []*ErrorObject `json:"errors"`
}
// ErrorObject is an `Error` implementation as well as an implementation of the JSON API error object.
//
// The main idea behind this struct is that you can use it directly in your code as an error type
// and pass it directly to `MarshalErrors` to get a valid JSON API errors payload.
// For more information on Golang errors, see: https://golang.org/pkg/errors/
// For more information on the JSON API spec's error objects, see: http://jsonapi.org/format/#error-objects
type ErrorObject struct {
// ID is a unique identifier for this particular occurrence of a problem.
ID string `json:"id,omitempty"`
// Title is a short, human-readable summary of the problem that SHOULD NOT change from occurrence to occurrence of the problem, except for purposes of localization.
Title string `json:"title,omitempty"`
// Detail is a human-readable explanation specific to this occurrence of the problem. Like title, this field’s value can be localized.
Detail string `json:"detail,omitempty"`
// Status is the HTTP status code applicable to this problem, expressed as a string value.
Status string `json:"status,omitempty"`
// Code is an application-specific error code, expressed as a string value.
Code string `json:"code,omitempty"`
// Meta is an object containing non-standard meta-information about the error.
Meta *map[string]interface{} `json:"meta,omitempty"`
}
// Error implements the `Error` interface.
func (e *ErrorObject) Error() string {
return fmt.Sprintf("Error: %s %s\n", e.Title, e.Detail)
}
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