Enable and display post tags

src/main/java/com/raysmond/blog/admin/controllers/PostController.java

@@ -121,7 +121,7 @@ public class PostController {
 
             return "admin/posts_edit";
         } else {
-            Post post = postService.getPost(postId);
+            Post post = postRepository.findOne(postId);
             DTOUtil.mapTo(postForm, post);
             post.setTags(postService.parseTagNames(postForm.getPostTags()));
 

src/main/java/com/raysmond/blog/controllers/PostController.java

@@ -25,9 +25,6 @@ public class PostController {
     @Autowired
     private PostService postService;
 
-    @Autowired
-    private TagService tagService;
-
     @RequestMapping(value = "archive", method = GET)
     public String archive(Model model){
         model.addAttribute("posts", postService.getArchivePosts());
@@ -50,6 +47,7 @@ public class PostController {
             throw new NotFoundException("Post with permalink " + permalink + " is not found");
 
         model.addAttribute("post", post);
+        model.addAttribute("tags", postService.getPostTags(post));
 
         return "posts/show";
     }

src/main/java/com/raysmond/blog/services/PostService.java

@@ -42,6 +42,7 @@ public class PostService {
     public static final String CACHE_NAME = "cache.post";
     public static final String CACHE_NAME_ARCHIVE = CACHE_NAME + ".archive";
     public static final String CACHE_NAME_PAGE = CACHE_NAME + ".page";
+    public static final String CACHE_NAME_TAGS = CACHE_NAME + ".tag";
 
     private static final Logger logger = LoggerFactory.getLogger(PostService.class);
 
@@ -61,6 +62,7 @@ public class PostService {
     @Cacheable(CACHE_NAME)
     public Post getPublishedPostByPermalink(String permalink){
         logger.debug("Get post with permalink " + permalink);
+
         Post post = postRepository.findByPermalinkAndPostStatus(permalink, PostStatus.PUBLISHED);
 
         if (post == null){
@@ -85,6 +87,7 @@ public class PostService {
     @Caching(evict = {
             @CacheEvict(value = CACHE_NAME, key = "#post.id"),
             @CacheEvict(value = CACHE_NAME, key = "#post.permalink", condition = "#post.permalink != null"),
+            @CacheEvict(value = CACHE_NAME_TAGS,  key = "#post.id"),
             @CacheEvict(value = CACHE_NAME_ARCHIVE, allEntries = true),
             @CacheEvict(value = CACHE_NAME_PAGE, allEntries = true)
     })
@@ -99,6 +102,7 @@ public class PostService {
     @Caching(evict = {
             @CacheEvict(value = CACHE_NAME, key = "#post.id"),
             @CacheEvict(value = CACHE_NAME, key = "#post.permalink", condition = "#post.permalink != null"),
+            @CacheEvict(value = CACHE_NAME_TAGS,  key = "#post.id"),
             @CacheEvict(value = CACHE_NAME_ARCHIVE, allEntries = true),
             @CacheEvict(value = CACHE_NAME_PAGE, allEntries = true)
     })
@@ -121,6 +125,20 @@ public class PostService {
         return cachedPosts;
     }
 
+    @Cacheable(value = CACHE_NAME_TAGS, key = "#post.id")
+    public List<Tag> getPostTags(Post post){
+        logger.debug("Get tags of post " + post.getId());
+
+        List<Tag> tags = new ArrayList<>();
+
+        // Load the post first. If not, when the post is cached before while the tags not,
+        // then the LAZY loading of post tags will cause an initialization error because
+        // of not hibernate connection session
+        postRepository.findOne(post.getId()).getTags().forEach(tags::add);
+        return tags;
+    }
+
+
     private Post extractPostMeta(Post post){
         Post archivePost = new Post();
         archivePost.setId(post.getId());

src/main/resources/resources/css/theme.css

@@ -124,6 +124,17 @@ form input, form button{
 	border-top: 1px #eee solid;
 }
 
+.post ul.tags{
+	margin-left: 0;
+	padding-left: 0;
+}
+
+.post ul.tags li{
+	display: inline-block;
+	list-style: none;
+	margin-left: 10px;
+}
+
 .footer{
 	text-align: center;
 	margin-bottom: 50px;

src/main/resources/templates/posts/show.jade

@@ -13,13 +13,18 @@ block content
       !{post.getRenderedContent()}
     
     .info 
+      if !tags.isEmpty()
+        ul.tags
+          li Tags:
+          for tag in tags
+            //- li: a(href="#") #{tag.getName()}
+            li #{tag.getName()}
+        
       .author 
         #{post.getCreatedAt() == post.getUpdatedAt() ? "Created" : "Updated"} 
         | at #{viewHelper.getFormattedDate(post.getCreatedAt())}
       
-      //- ul.tags
-      //-   for tag in tags
-      //-     li: a(href="#") #{tag.getName()}
+      
         
     
     .comments