Golang Context.Logf方法代码示例

// POST /users/password/reset
func HandlePasswordResetSend(context router.Context) error {

	// Find the user by email (if not found let them know)
	// Find the user by hex token in the db
	email := context.Param("email")
	user, err := users.First(users.Where("email=?", email))
	if err != nil {
		return router.Redirect(context, "/users/password/reset?message=invalid_email")
	}

	// Generate a random token and url for the email
	token := auth.BytesToHex(auth.RandomToken())

	// Generate the url to use in our email
	base := fmt.Sprintf("%s://%s", context.Request().URL.Scheme, context.Request().URL.Host)
	url := fmt.Sprintf("%s/users/password?token=%s", base, token)

	context.Logf("#info sending reset email:%s url:%s", email, url)

	// Update the user record with with this token
	p := map[string]string{"reset_token": token}
	user.Update(p)

	// Send a password reset email out
	//mail.Send("mymail")

	// Tell the user what we have done
	return router.Redirect(context, "/users/password/sent")
}

// POST users/create
func HandleCreate(context router.Context) error {

	// Authorise
	err := authorise.Path(context)
	if err != nil {
		return router.NotAuthorizedError(err)
	}

	// Setup context
	params, err := context.Params()
	if err != nil {
		return router.InternalError(err)
	}

	// We should check for duplicates in here
	id, err := users.Create(params.Map())
	if err != nil {
		return router.InternalError(err, "Error", "Sorry, an error occurred creating the user record.")
	} else {
		context.Logf("#info Created user id,%d", id)
	}

	// Redirect to the new user
	p, err := users.Find(id)
	if err != nil {
		return router.InternalError(err, "Error", "Sorry, an error occurred finding the new user record.")
	}

	return router.Redirect(context, p.URLIndex())
}

// HandleCreate handles the POST of the create form for pages
func HandleCreate(context router.Context) error {

	// Authorise
	err := authorise.ResourceAndAuthenticity(context, nil)
	if err != nil {
		return router.NotAuthorizedError(err)
	}

	// Setup context
	params, err := context.Params()
	if err != nil {
		return router.InternalError(err)
	}

	id, err := pages.Create(params.Map())
	if err != nil {
		return router.InternalError(err)
	}

	// Log creation
	context.Logf("#info Created page id,%d", id)

	// Redirect to the new page
	m, err := pages.Find(id)
	if err != nil {
		return router.InternalError(err)
	}

	return router.Redirect(context, m.URLIndex())
}

// HandleUpdate handles POST or PUT /images/1/update
func HandleUpdate(context router.Context) error {

	// Find the image
	image, err := images.Find(context.ParamInt("id"))
	if err != nil {
		context.Logf("#error Error finding image %s", err)
		return router.NotFoundError(err)
	}

	// Authorise
	err = authorise.Resource(context, image)
	if err != nil {
		return router.NotAuthorizedError(err)
	}

	// Update the image
	params, err := context.Params()
	if err != nil {
		return router.InternalError(err)
	}

	err = image.Update(params.Map())
	if err != nil {
		return router.InternalError(err)
	}

	// We redirect back to source if redirect param is set
	return router.Redirect(context, image.URLUpdate())

}

// errHandler renders an error using error templates if available
func errHandler(context router.Context, e error) {

	// Cast the error to a status error if it is one, if not wrap it in a Status 500 error
	err := router.ToStatusError(e)

	view := view.New(context)

	view.AddKey("title", err.Title)
	view.AddKey("message", err.Message)

	if !context.Production() {
		view.AddKey("status", err.Status)
		view.AddKey("file", err.FileLine())
		view.AddKey("error", err.Err)
	}

	// Set the status correctly for errors
	context.Writer().WriteHeader(err.Status)

	// Use our error template
	view.Template("app/views/error.html.got")

	context.Logf("#error %s\n", err)
	view.Render()
}

// errHandler renders an error using error templates if available
func errHandler(context router.Context, e error) {

	// Cast the error to a status error if it is one, if not wrap it in a Status 500 error
	err := router.ToStatusError(e)

	view := view.New(context)

	view.AddKey("title", err.Title)
	view.AddKey("message", err.Message)

	if !context.Production() {
		view.AddKey("status", err.Status)
		view.AddKey("file", err.FileLine())
		view.AddKey("error", err.Err)
	}

	view.Template("app/views/error.html.got")

	// Log 404 as info only
	if err.Status == 404 {
		context.Logf("#info %s\n", err)
	} else {
		context.Logf("#error %s\n", err)
	}

	view.Render()
}

// HandleIndex serves a get request at /pages
func HandleIndex(context router.Context) error {

	// Authorise
	err := authorise.Path(context)
	if err != nil {
		return router.NotAuthorizedError(err)
	}

	// Fetch the pages
	q := pages.Query().Order("url asc")

	// Filter if necessary
	filter := context.Param("filter")
	if len(filter) > 0 {
		filter = strings.Replace(filter, "&", "", -1)
		filter = strings.Replace(filter, " ", "", -1)
		filter = strings.Replace(filter, " ", " & ", -1)
		q.Where("(to_tsvector(name) || to_tsvector(summary) || to_tsvector(url) @@ to_tsquery(?) )", filter)
	}

	pageList, err := pages.FindAll(q)
	if err != nil {
		context.Logf("#error Error indexing pages %s", err)
		return router.InternalError(err)
	}

	// Serve template
	view := view.New(context)
	view.AddKey("filter", filter)
	view.AddKey("pages", pageList)
	return view.Render()

}

// HandleUpdate or PUT /users/1/update
func HandleUpdate(context router.Context) error {

	// Find the user
	id := context.ParamInt("id")
	user, err := users.Find(id)
	if err != nil {
		context.Logf("#error Error finding user %s", err)
		return router.NotFoundError(err)
	}

	// Authorise
	err = authorise.ResourceAndAuthenticity(context, user)
	if err != nil {
		return router.NotAuthorizedError(err)
	}

	// Get the params
	params, err := context.Params()
	if err != nil {
		return router.InternalError(err)
	}

	context.Logf("PARAMS RECD:%v", params)

	err = user.Update(params.Map())
	if err != nil {
		return router.InternalError(err)
	}

	// Redirect to user
	return router.Redirect(context, user.URLShow())
}

// HandleShow serve a get request at /users/1
func HandleShow(context router.Context) error {

	// Find the user
	user, err := users.Find(context.ParamInt("id"))
	if err != nil {
		context.Logf("#error parsing user id: %s", err)
		return router.NotFoundError(err)
	}

	userMeta := fmt.Sprintf("%s – %s", user.Name, user.Summary)

	// Set up view
	view := view.New(context)

	// Find the first image which matches this user
	image, err := images.Find(user.ImageID)
	if err == nil {
		// only add image key if we have one
		view.AddKey("image", image)
	}

	// Render the Template
	view.AddKey("user", user)
	view.AddKey("meta_title", userMeta)
	view.AddKey("meta_desc", userMeta)
	view.AddKey("meta_keywords", user.Keywords())
	return view.Render()

}

// CreateAuthenticityToken returns an auth.AuthenticityToken and writes a secret to check it to the cookie
func CreateAuthenticityToken(context router.Context) string {
	token, err := auth.AuthenticityToken(context.Writer(), context.Request())
	if err != nil {
		context.Logf("#warn invalid authenticity token at %v", context)
		return "" // empty strings are invalid as tokens
	}

	return token
}

// HandleUpdate or PUT /users/1/update
func HandleUpdate(context router.Context) error {

	// Find the user
	id := context.ParamInt("id")
	user, err := users.Find(id)
	if err != nil {
		context.Logf("#error Error finding user %s", err)
		return router.NotFoundError(err)
	}

	// Authorise
	err = authorise.Resource(context, user)
	if err != nil {
		return router.NotAuthorizedError(err)
	}

	// We expect only one image, what about replacing the existing when updating?
	// At present we just create a new image
	files, err := context.ParamFiles("image")
	if err != nil {
		return router.InternalError(err)
	}

	// Get the params
	params, err := context.Params()
	if err != nil {
		return router.InternalError(err)
	}

	var imageID int64

	if len(files) > 0 {
		fileHandle := files[0]

		// Create an image (saving the image representation on disk)
		imageParams := map[string]string{"name": user.Name, "status": "100"}
		imageID, err = images.Create(imageParams, fileHandle)
		if err != nil {
			return router.InternalError(err)
		}

		params.Set("image_id", fmt.Sprintf("%d", imageID))
		delete(params, "image")
	}

	err = user.Update(params.Map())
	if err != nil {
		return router.InternalError(err)
	}

	// Redirect to user
	return router.Redirect(context, user.URLShow())
}

func loginUser(context router.Context, user *users.User) error {
	// Now save the user details in a secure cookie, so that we remember the next request
	session, err := auth.Session(context, context.Request())
	if err != nil {
		return err
	}

	context.Logf("#info Login success for user: %d %s", user.Id, user.Email)
	session.Set(auth.SessionUserKey, fmt.Sprintf("%d", user.Id))
	session.Save(context)
	return nil
}

// AuthenticityToken checks the token in the current request
func AuthenticityToken(context router.Context) error {
	token := context.Param(auth.SessionTokenKey)
	err := auth.CheckAuthenticityToken(token, context.Request())
	if err != nil {
		// If the check fails, log out the user and completely clear the session
		context.Logf("#warn invalid authenticity token at %v", context)
		session, err := auth.SessionGet(context.Request())
		if err != nil {
			return err
		}
		session.Clear(context.Writer())
	}

	return err
}

// HandleCreate handles the POST of the create form for users
func HandleCreate(context router.Context) error {

	// Authorise
	err := authorise.Resource(context, nil)
	if err != nil {
		return router.NotAuthorizedError(err)
	}

	// Setup context
	params, err := context.Params()
	if err != nil {
		return router.InternalError(err)
	}

	// Default to customer role etc - admins will have to promote afterwards
	params.Set("role", fmt.Sprintf("%d", users.RoleCustomer))
	params.Set("status", fmt.Sprintf("%d", status.Published))

	id, err := users.Create(params.Map())
	if err != nil {
		return err
	}

	// Log creation
	context.Logf("#info Created user id,%d", id)

	// Redirect to the new user
	user, err := users.Find(id)
	if err != nil {
		return router.InternalError(err)
	}

	// Save the details in a secure cookie
	session, err := auth.Session(context, context.Request())
	if err != nil {
		return router.InternalError(err)
	}

	context.Logf("#info CREATE for user: %d", user.Id)
	session.Set(auth.SessionUserKey, fmt.Sprintf("%d", user.Id))
	session.Save(context)

	// Send them to their user profile page
	return router.Redirect(context, user.URLShow())
}

// HandleUpdateShow handles GET /pages/1/update (show form to update)
func HandleUpdateShow(context router.Context) error {

	// Find the page
	page, err := pages.Find(context.ParamInt("id"))
	if err != nil {
		context.Logf("#error Error finding page %s", err)
		return router.NotFoundError(err)
	}

	// Authorise updating page
	err = authorise.Resource(context, page)
	if err != nil {
		return router.NotAuthorizedError(err)
	}

	// Render the template
	view := view.New(context)
	view.AddKey("page", page)
	return view.Render()
}