Пример #1
0
// Get a list of visualizations
func listVisualizations(w http.ResponseWriter, r *http.Request) {
	c := appengine.NewContext(r)

	q := datastore.NewQuery("visualization").Order("-Date")

	// Parse filter parameters
	r.ParseForm()
	fUser := r.Form["user"]
	if len(fUser) > 0 && fUser[0] == "me" {
		u := user.Current(c)
		if u == nil {
			common.Serve401(w)
			return
		}
		q = q.Ancestor(model.GetAccountKey(c, u))
	}

	// Get visualizations
	var e []model.Visualization
	keys, err := q.GetAll(c, &e)
	if err != nil {
		common.ServeError(c, w, err)
		return
	}

	// Prepare output
	output := make([]map[string]interface{}, 0)
	for i := range keys {
		output = append(output, map[string]interface{}{"Key": keys[i], "Title": e[i].Title, "Date": e[i].Date})
	}

	common.WriteJson(c, w, output)
}
Пример #2
0
// Seat a title for a visualization
func setVisualizationTitle(w http.ResponseWriter, r *http.Request) {
	c := appengine.NewContext(r)
	vars := mux.Vars(r)
	u := user.Current(c)

	// Check if user is logged in
	if u == nil {
		common.Serve401(w)
		return
	}

	title := r.PostFormValue("title")

	key, err := datastore.DecodeKey(vars["key"])
	if err != nil {
		common.Serve404(w)
		return
	}

	// Check if user is the owner
	if key.Parent().StringID() != u.ID {
		common.Serve403(w)
		return
	}

	// Start a datastore transaction
	var e model.Visualization
	err = datastore.RunInTransaction(c, func(c appengine.Context) error {
		// Get the visualization object
		err = datastore.Get(c, key, &e)
		if err != nil {
			return err
		}

		// Change the title
		e.Title = title

		// Save the visualization object
		key, err = datastore.Put(c, key, &e)
		return err
	}, nil)
	if err != nil {
		if err == datastore.ErrNoSuchEntity {
			common.Serve404(w)
			return
		}
		common.ServeError(c, w, err)
		return
	}
}
Пример #3
0
// Create a new visualization
func newVisualization(w http.ResponseWriter, r *http.Request) {
	c := appengine.NewContext(r)
	u := user.Current(c)

	if u == nil {
		common.Serve401(w)
		return
	}

	e := model.Visualization{"Untitled", time.Now(), nil}

	key, err := datastore.Put(c, datastore.NewIncompleteKey(c, "visualization", model.GetAccountKey(c, u)), &e)
	if err != nil {
		common.ServeError(c, w, err)
		return
	}

	common.WriteJson(c, w, map[string]*datastore.Key{"key": key})
}
Пример #4
0
// Create a new module
func newModule(w http.ResponseWriter, r *http.Request) {
	c := appengine.NewContext(r)
	u := user.Current(c)

	acc, err := model.GetAccount(c, u)
	if err != nil {
		common.ServeError(c, w, err)
		return
	}
	if acc == nil {
		common.Serve401(w)
		return
	}

	// Parse form data
	devname := r.PostFormValue("devname")
	name := r.PostFormValue("name")

	// Set user developer name
	if acc.Devname == "" {
		if devname == "" {
			common.Serve404(w) // TODO: maybe 400 instead
			return
		}
		acc.Devname = devname
		err := model.SaveAccount(c, u, acc)
		if err != nil {
			common.ServeError(c, w, err)
			return
		}
	} else {
		devname = acc.Devname
	}

	e := model.Module{devname, name, time.Now(), nil}
	_, err = datastore.Put(c, datastore.NewKey(c, "module", name, 0, model.GetAccountKey(c, u)), &e)
	if err != nil {
		common.ServeError(c, w, err)
		return
	}

	common.WriteJson(c, w, map[string]string{"Devname": devname, "Name": name})
}
Пример #5
0
// Upload a file to a visualization
func postVisualizationFile(w http.ResponseWriter, r *http.Request) {
	c := appengine.NewContext(r)
	vars := mux.Vars(r)
	u := user.Current(c)

	// Check if user is logged in
	if u == nil {
		common.Serve401(w)
		return
	}

	key, err := datastore.DecodeKey(vars["key"])
	if err != nil {
		common.Serve404(w)
		return
	}

	// Check if user is the owner
	if key.Parent().StringID() != u.ID {
		common.Serve403(w)
		return
	}

	// Start a datastore transaction
	var e model.Visualization
	err = datastore.RunInTransaction(c, func(c appengine.Context) error {
		// Get the visualization object
		err = datastore.Get(c, key, &e)
		if err != nil {
			return err
		}

		if vars["action"] == "delete" {
			e.Files, err = deleteFile(c, r, e.Files)
			if err != nil {
				return err
			}
		} else {
			e.Files, err = uploadFile(c, r, e.Files)
			if err != nil {
				return err
			}
		}

		// Save the visualization object
		key, err = datastore.Put(c, key, &e)
		return err
	}, nil)
	if err != nil {
		if err == datastore.ErrNoSuchEntity {
			common.Serve404(w)
			return
		}
		common.ServeError(c, w, err)
		return
	}

	res := map[string]interface{}{
		"Owner": key.Parent().StringID(),
		"Title": e.Title,
		"Date":  e.Date,
		"Files": e.Files,
	}

	common.WriteJson(c, w, res)
}