Golang Context.Config方法代码示例

// HandleCode displays a list of stories linking to repos (github etc) using gravity to order them
// responds to GET /stories/code
func HandleCode(context router.Context) error {

	// Build a query
	q := stories.Query().Where("points > -6").Order("rank desc, points desc, id desc").Limit(listLimit)

	// Restrict to stories with have a url starting with github.com or bitbucket.org
	// other code repos can be added later
	q.Where("url ILIKE 'https://github.com%'").OrWhere("url ILIKE 'https://bitbucket.org'")

	// Set the offset in pages if we have one
	page := int(context.ParamInt("page"))
	if page > 0 {
		q.Offset(listLimit * page)
	}

	// Fetch the stories
	results, err := stories.FindAll(q)
	if err != nil {
		return router.InternalError(err)
	}

	// Render the template
	view := view.New(context)
	view.AddKey("page", page)
	view.AddKey("stories", results)
	view.AddKey("pubdate", storiesModTime(results))
	view.AddKey("meta_title", "Go Code")
	view.AddKey("meta_desc", context.Config("meta_desc"))
	view.AddKey("meta_keywords", context.Config("meta_keywords"))
	view.AddKey("meta_rss", storiesXMLPath(context))
	view.Template("stories/views/index.html.got")

	if context.Param("format") == ".xml" {
		view.Layout("")
		view.Template("stories/views/index.xml.got")
	}

	return view.Render()

}

// HandleHome displays a list of stories using gravity to order them
// used for the home page for gravity rank see votes.go
// responds to GET /
func HandleHome(context router.Context) error {

	// Build a query
	q := stories.Query().Limit(listLimit)

	// Select only above 0 points,  Order by rank, then points, then name
	q.Where("points > 0").Order("rank desc, points desc, id desc")

	// Set the offset in pages if we have one
	page := int(context.ParamInt("page"))
	if page > 0 {
		q.Offset(listLimit * page)
	}

	// Fetch the stories
	results, err := stories.FindAll(q)
	if err != nil {
		return router.InternalError(err)
	}

	// Render the template
	view := view.New(context)
	view.AddKey("page", page)
	view.AddKey("stories", results)
	view.Template("stories/views/index.html.got")
	view.AddKey("pubdate", storiesModTime(results))
	view.AddKey("meta_title", fmt.Sprintf("%s, %s", context.Config("meta_title"), context.Config("meta_desc")))
	view.AddKey("meta_desc", context.Config("meta_desc"))
	view.AddKey("meta_keywords", context.Config("meta_keywords"))
	view.AddKey("meta_rss", storiesXMLPath(context))

	if context.Param("format") == ".xml" {
		view.Layout("")
		view.Template("stories/views/index.xml.got")
	}

	return view.Render()

}

// HandleShow displays a single story
func HandleShow(context router.Context) error {

	// Find the story
	story, err := stories.Find(context.ParamInt("id"))
	if err != nil {
		return router.InternalError(err)
	}

	// Redirect requests to the canonical url
	if context.Path() != story.CanonicalURL() {
		return router.Redirect(context, story.CanonicalURL())
	}

	// Find the comments for this story
	// Fetch the comments
	q := comments.Where("story_id=?", story.Id).Order(comments.RankOrder)
	rootComments, err := comments.FindAll(q)
	if err != nil {
		return router.InternalError(err)
	}

	meta := story.Summary
	if len(meta) == 0 {
		meta = fmt.Sprintf("A story on %s, %s", context.Config("meta_title"), context.Config("meta_desc"))
	}

	// Render the template
	view := view.New(context)
	view.AddKey("story", story)
	view.AddKey("meta_title", story.Name)
	view.AddKey("meta_desc", meta)
	view.AddKey("meta_keywords", fmt.Sprintf("%s %s", story.Name, context.Config("meta_keywords")))
	view.AddKey("comments", rootComments)

	return view.Render()
}

// HandleIndex displays a list of stories at /stories
func HandleIndex(context router.Context) error {

	// Build a query
	q := stories.Query().Limit(listLimit)

	// Order by date by default
	q.Where("points > -6").Order("created_at desc")

	// Filter if necessary - this assumes name and summary cols
	filter := context.Param("q")
	if len(filter) > 0 {

		// Replace special characters with escaped sequence
		filter = strings.Replace(filter, "_", "\\_", -1)
		filter = strings.Replace(filter, "%", "\\%", -1)

		wildcard := "%" + filter + "%"

		// Perform a wildcard search for name or url
		q.Where("stories.name ILIKE ? OR stories.url ILIKE ?", wildcard, wildcard)

		// If filtering, order by rank, not by date
		q.Order("rank desc, points desc, id desc")
	}

	// Set the offset in pages if we have one
	page := int(context.ParamInt("page"))
	if page > 0 {
		q.Offset(listLimit * page)
	}

	// Fetch the stories
	results, err := stories.FindAll(q)
	if err != nil {
		return router.InternalError(err)
	}

	windowTitle := context.Config("meta_title")
	switch filter {
	case "Video:":
		windowTitle = "Golang Videos"
	}

	// Render the template
	view := view.New(context)
	view.AddKey("page", page)
	view.AddKey("stories", results)
	view.AddKey("pubdate", storiesModTime(results))
	view.AddKey("meta_title", windowTitle)
	view.AddKey("meta_desc", context.Config("meta_desc"))
	view.AddKey("meta_keywords", context.Config("meta_keywords"))
	view.AddKey("meta_rss", storiesXMLPath(context))

	if context.Param("format") == ".xml" {
		view.Layout("")
		view.Template("stories/views/index.xml.got")
	}

	return view.Render()

}