func ShowPostTemplate(writer http.ResponseWriter, r *http.Request, slug string) error {
// Read lock templates and global blog
compiledTemplates.RLock()
defer compiledTemplates.RUnlock()
methods.Blog.RLock()
defer methods.Blog.RUnlock()
post, err := database.RetrievePostBySlug(slug)
if err != nil {
return err
} else if !post.IsPublished { // Make sure the post is published before rendering it
return errors.New("Post not published.")
}
requestData := structure.RequestData{Posts: make([]structure.Post, 1), Blog: methods.Blog, CurrentTemplate: 1, CurrentPath: r.URL.Path} // CurrentTemplate = post
requestData.Posts[0] = *post
// If the post is a page and the page template is available, use the page template
if post.IsPage {
if template, ok := compiledTemplates.m["page"]; ok {
_, err = writer.Write(executeHelper(template, &requestData, 1)) // context = post
return err
}
}
_, err = writer.Write(executeHelper(compiledTemplates.m["post"], &requestData, 1)) // context = post
if requestData.PluginVMs != nil {
// Put the lua state map back into the pool
plugins.LuaPool.Put(requestData.PluginVMs)
}
return err
}
func generateUniqueSlug(slug string, table string, suffix int) string {
// Recursive function
slugToCheck := slug
if suffix > 1 { // If this is not the first try, add the suffix and try again
slugToCheck = slug + "-" + strconv.Itoa(suffix)
}
var err error
if table == "tags" { // Not needed at the moment. Tags with the same name should have the same slug.
_, err = database.RetrieveTagIdBySlug(slugToCheck)
} else if table == "posts" {
_, err = database.RetrievePostBySlug(slugToCheck)
} else if table == "users" {
_, err = database.RetrieveUserBySlug(slugToCheck)
}
if err == nil {
return generateUniqueSlug(slug, table, suffix+1)
}
return slugToCheck
}