middleware

Documentation

Index

• Variables
• func AddContentType(s string) buffalo.MiddlewareFunc
• func ParameterLogger(next buffalo.Handler) buffalo.Handler
• func SetContentType(s string) buffalo.MiddlewareFunc

Variables

var PopTransaction = func(db *pop.Connection) buffalo.MiddlewareFunc {
	return func(h buffalo.Handler) buffalo.Handler {
		return func(c buffalo.Context) error {

			err := db.Transaction(func(tx *pop.Connection) error {
				start := tx.Elapsed
				defer func() {
					finished := tx.Elapsed
					elapsed := time.Duration(finished - start)
					c.LogField("db", elapsed)
				}()
				c.Set("tx", tx)
				if err := h(c); err != nil {
					return err
				}
				if res, ok := c.Response().(*buffalo.Response); ok {
					if res.Status < 200 || res.Status >= 400 {
						return errNonSuccess
					}
				}
				return nil
			})
			if err != nil && errors.Cause(err) != errNonSuccess {
				return err
			}
			return nil
		}
	}
}

PopTransaction is a piece of Buffalo middleware that wraps each request in a transaction that will automatically get committed or rolledback. It will also add a field to the log, "db", that shows the total duration spent during the request making database calls.

Functions

func AddContentType

func AddContentType(s string) buffalo.MiddlewareFunc

AddContentType will add a secondary content type to a request. If no content type is sent by the client the default will be set, otherwise the client's content type will be used.

func ParameterLogger

func ParameterLogger(next buffalo.Handler) buffalo.Handler

ParameterLogger logs form and parameter values to the logger

func SetContentType

func SetContentType(s string) buffalo.MiddlewareFunc

SetContentType on the request to desired type. This will override any content type sent by the client.