A web blog and personal homepage engine written in Go.
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package responses
import (
"fmt"
"html/template"
"net/http"
"git.kirsle.net/apps/gophertype/pkg/constants"
"git.kirsle.net/apps/gophertype/pkg/session"
)
// ExtraFuncs lets the core app inject extra template functions for all templates.
// Use cases include inserting comment or blog partials on other pages.
var ExtraFuncs template.FuncMap
// TemplateFuncs available to all templates.
func TemplateFuncs(r *http.Request) template.FuncMap {
funcs := template.FuncMap{
"CSRF": CSRF(r),
"CSRFToken": CSRFToken(r),
"FormValue": FormValue(r),
"TestFunction": TestFunction(r),
}
for k, v := range ExtraFuncs {
funcs[k] = v
}
return funcs
}
// CSRF returns the current CSRF token as an HTML hidden form field.
func CSRF(r *http.Request) func() template.HTML {
return func() template.HTML {
ctx := r.Context()
if token, ok := ctx.Value(session.CSRFKey).(string); ok {
return template.HTML(fmt.Sprintf(
`<input type="hidden" name="%s" value="%s">`,
constants.CSRFFormName,
token,
))
}
return template.HTML("[error: csrf token not found in request context]")
}
}
// CSRFToken returns the current CSRF token as a string.
func CSRFToken(r *http.Request) func() template.HTML {
return func() template.HTML {
ctx := r.Context()
if token, ok := ctx.Value(session.CSRFKey).(string); ok {
return template.HTML(token)
}
return template.HTML("[error: csrf token not found in request context]")
}
}
// FormValue returns a form value (1st item only).
func FormValue(r *http.Request) func(string) string {
return func(key string) string {
return r.FormValue(key)
}
}
// TestFunction is a "hello world" template function.
func TestFunction(r *http.Request) func() template.HTML {
return func() template.HTML {
return template.HTML("TestFunction() called")
}
}