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@markbates @paganotoni @bigblind
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package buffalo
import (
// Context holds on to information as you
// pass it down through middleware, Handlers,
// templates, etc... It strives to make your
// life a happier one.
type Context interface {
Response() http.ResponseWriter
Request() *http.Request
Session() *Session
Cookies() *Cookies
Params() ParamValues
Param(string) string
Set(string, interface{})
LogField(string, interface{})
Logger() Logger
Bind(interface{}) error
Render(int, render.Renderer) error
Error(int, error) error
Redirect(int, string, ...interface{}) error
Data() map[string]interface{}
Flash() *Flash
File(string) (binding.File, error)
// ParamValues will most commonly be url.Values,
// but isn't it great that you set your own? :)
type ParamValues interface {
Get(string) string
func (a *App) newContext(info RouteInfo, res http.ResponseWriter, req *http.Request) Context {
if ws, ok := res.(*Response); ok {
res = ws
params := req.URL.Query()
vars := mux.Vars(req)
for k, v := range vars {
params.Set(k, v)
if err := req.ParseForm(); err == nil {
for k, v := range req.Form {
for _, vv := range v {
params.Set(k, vv)
session := a.getSession(req, res)
ct := httpx.ContentType(req)
contextData := map[string]interface{}{
"app": a,
"env": a.Env,
"routes": a.Routes(),
"current_route": info,
"current_path": req.URL.Path,
"contentType": ct,
"method": req.Method,
for _, route := range a.Routes() {
cRoute := route
contextData[cRoute.PathName] = cRoute.BuildPathHelper()
return &DefaultContext{
Context: req.Context(),
contentType: ct,
response: res,
request: req,
params: params,
logger: a.Logger,
session: session,
flash: newFlash(session),
data: contextData,
moot: &sync.RWMutex{},
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