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handler_edit.go
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/
handler_edit.go
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package cooking
import (
"fmt"
"net/http"
"strconv"
"github.com/gorilla/mux"
)
func init() {
Handlers["/edit/{id:[0-9]+}"] = handleEdit
}
func handleEdit(server *Server) http.HandlerFunc {
return func(writer http.ResponseWriter, request *http.Request) {
arguments := mux.Vars(request)
id, err := strconv.ParseUint(arguments["id"], 10, 64)
if err != nil {
SendError(writer, request, err, http.StatusBadRequest)
}
switch request.Method {
case "POST":
err := request.ParseForm()
if err != nil {
SendError(writer, request, fmt.Errorf("cannot parse from: %s", err), http.StatusBadRequest)
return
}
recipe := Recipe{
ID: id,
Name: request.PostForm.Get("name"),
Description: request.PostForm.Get("description"),
Length: request.PostForm.Get("length"),
Source: request.PostForm.Get("source"),
}
freshness := request.PostForm.Get("freshness")
err = recipe.ParseFreshness(freshness)
if err != nil {
SendError(writer, request, err, http.StatusBadRequest)
return
}
err = recipe.Validate()
if err != nil {
SendError(writer, request, err, http.StatusBadRequest)
return
}
err = server.Storage.Update(recipe)
if err != nil {
SendError(writer, request, err, http.StatusBadRequest)
return
}
writer.Header().Add("Location", "/?success=\"updated successfully\"")
writer.WriteHeader(http.StatusTemporaryRedirect)
case "GET":
recipe, err := server.Storage.Get(id)
if err != nil {
SendError(writer, request, err, http.StatusBadRequest)
return
}
SendTemplate(writer, request, server, "add.go.tmpl", &AddTemplateData{
Link: fmt.Sprintf("/edit/%d", id),
Recipe: recipe,
})
}
}
}