Sections

config.go

@@ -38,6 +38,8 @@ type configBlog struct {
 	Title string `mapstructure:"title"`
 	// Number of posts per page
 	Pagination int `mapstructure:"pagination"`
+	// Sections
+	Sections []string `mapstructure:"sections"`
 }
 
 type configUser struct {
@@ -68,6 +70,7 @@ func initConfig() error {
 	viper.SetDefault("blog.lang", "en")
 	viper.SetDefault("blog.title", "My blog")
 	viper.SetDefault("blog.pagination", 10)
+	viper.SetDefault("blog.sections", []string{"posts"})
 	viper.SetDefault("user.nick", "admin")
 	viper.SetDefault("user.name", "Admin")
 	viper.SetDefault("user.password", "secret")

example-config.yaml

@@ -13,6 +13,8 @@ cache:
 blog:
   lang: en
   title: My blog
+  sections:
+    - posts
 user:
   nick: admin
   name: Admin

http.go

@@ -85,13 +85,20 @@ func buildHandler() (http.Handler, error) {
 		}
 	}
 
+	for _, section := range appConfig.Blog.Sections {
+		if section != "" {
+			r.With(cacheMiddleware, minifier.Middleware).Get("/"+section, serveSection("/"+section, section))
+			r.With(cacheMiddleware, minifier.Middleware).Get("/"+section+"/page/{page}", serveSection("/"+section, section))
+		}
+	}
+
 	routePatterns := routesToStringSlice(r.Routes())
 	if !routePatterns.has("/") {
-		r.With(cacheMiddleware, minifier.Middleware).Get("/", serveIndex("/"))
-		r.With(cacheMiddleware, minifier.Middleware).Get("/page/{page}", serveIndex("/"))
+		r.With(cacheMiddleware, minifier.Middleware).Get("/", serveHome("/"))
+		r.With(cacheMiddleware, minifier.Middleware).Get("/page/{page}", serveHome("/"))
 	} else if !routePatterns.has("/blog") {
-		r.With(cacheMiddleware, minifier.Middleware).Get("/blog", serveIndex("/blog"))
-		r.With(cacheMiddleware, minifier.Middleware).Get("/blog/page/{page}", serveIndex("/blog"))
+		r.With(cacheMiddleware, minifier.Middleware).Get("/blog", serveHome("/blog"))
+		r.With(cacheMiddleware, minifier.Middleware).Get("/blog/page/{page}", serveHome("/blog"))
 	}
 
 	r.With(minifier.Middleware).NotFound(serve404)

posts.go

@@ -46,12 +46,13 @@ type indexTemplateDate struct {
 
 type postPaginationAdapter struct {
 	context context.Context
+	config  *postsRequestConfig
 	nums    int
 }
 
 func (p *postPaginationAdapter) Nums() int {
 	if p.nums == 0 {
-		p.nums, _ = countPosts(p.context, &postsRequestConfig{})
+		p.nums, _ = countPosts(p.context, p.config)
 	}
 	return p.nums
 }
@@ -62,18 +63,31 @@ func (p *postPaginationAdapter) Slice(offset, length int, data interface{}) erro
 	}
 
 	posts, err := getPosts(p.context, &postsRequestConfig{
-		offset: offset,
-		limit:  length,
+		sections: p.config.sections,
+		offset:   offset,
+		limit:    length,
 	})
 	reflect.ValueOf(data).Elem().Set(reflect.ValueOf(&posts).Elem())
 	return err
 }
 
-func serveIndex(path string) func(w http.ResponseWriter, r *http.Request) {
+func serveHome(path string) func(w http.ResponseWriter, r *http.Request) {
+	return serveIndex(path, "")
+}
+
+func serveSection(path, section string) func(w http.ResponseWriter, r *http.Request) {
+	return serveIndex(path, section)
+}
+
+func serveIndex(path string, section string) func(w http.ResponseWriter, r *http.Request) {
 	return func(w http.ResponseWriter, r *http.Request) {
 		pageNoString := chi.URLParam(r, "page")
 		pageNo, _ := strconv.Atoi(pageNoString)
-		p := paginator.New(&postPaginationAdapter{context: r.Context()}, appConfig.Blog.Pagination)
+		sections := appConfig.Blog.Sections
+		if len(section) > 0 {
+			sections = []string{section}
+		}
+		p := paginator.New(&postPaginationAdapter{context: r.Context(), config: &postsRequestConfig{sections: sections}}, appConfig.Blog.Pagination)
 		p.SetPage(pageNo)
 		var posts []*Post
 		err := p.Results(&posts)
@@ -110,22 +124,34 @@ func getPost(context context.Context, path string) (*Post, error) {
 }
 
 type postsRequestConfig struct {
-	path   string
-	limit  int
-	offset int
+	path     string
+	limit    int
+	offset   int
+	sections []string
 }
 
 func getPosts(context context.Context, config *postsRequestConfig) (posts []*Post, err error) {
 	paths := make(map[string]int)
 	var rows *sql.Rows
 	defaultSelection := "select p.path, coalesce(content, ''), coalesce(published, ''), coalesce(updated, ''), coalesce(parameter, ''), coalesce(value, '') "
-	defaultTables := " from posts p left outer join post_parameters pp on p.path = pp.path "
-	defaultSorting := " order by p.updated desc "
+	postsTable := "posts"
+	if len(config.sections) != 0 {
+		postsTable = "(select * from posts where"
+		for i, section := range config.sections {
+			if i > 0 {
+				postsTable += " or"
+			}
+			postsTable += " path like '/" + section + "/%'"
+		}
+		postsTable += ")"
+	}
+	defaultTables := " from " + postsTable + " p left outer join post_parameters pp on p.path = pp.path "
+	defaultSorting := " order by coalesce(p.updated, p.published) desc "
 	if config.path != "" {
 		query := defaultSelection + defaultTables + " where p.path=?" + defaultSorting
 		rows, err = appDb.QueryContext(context, query, config.path)
 	} else if config.limit != 0 || config.offset != 0 {
-		query := defaultSelection + " from (select * from posts p " + defaultSorting + " limit ? offset ?) p left outer join post_parameters pp on p.path = pp.path "
+		query := defaultSelection + " from (select * from " + postsTable + " p " + defaultSorting + " limit ? offset ?) p left outer join post_parameters pp on p.path = pp.path "
 		rows, err = appDb.QueryContext(context, query, config.limit, config.offset)
 	} else {
 		query := defaultSelection + defaultTables + defaultSorting
@@ -157,9 +183,9 @@ func getPosts(context context.Context, config *postsRequestConfig) (posts []*Pos
 	return posts, nil
 }
 
-func countPosts(context context.Context, _ *postsRequestConfig) (count int, err error) {
-	err = appDb.QueryRowContext(context, "select count(*) from posts").Scan(&count)
-	return
+func countPosts(context context.Context, config *postsRequestConfig) (int, error) {
+	posts, err := getPosts(context, config)
+	return len(posts), err
 }
 
 func allPostPaths() ([]string, error) {