blog tagging service

prakass1 · Dec 21, 2020 · 77b093e · 77b093e
1 parent 70f0072
commit 77b093e
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Showing 8 changed files with 91 additions and 32 deletions.
diff --git a/blog/posts/posts_controller.py b/blog/posts/posts_controller.py
@@ -1,10 +1,10 @@
-from flask import Blueprint
-from flask import render_template, request, redirect, url_for, jsonify
+import os
+from flask import Blueprint,render_template, request, redirect, url_for
 from common.services.posts_service import PostService
+from common.services import tags_service
 from blog import resp
 from blog import cache
 from blog.posts.service import posts_blog_service
-import os
 
 posts_bp = Blueprint(
     "posts", __name__)
@@ -34,16 +34,43 @@ def blog():
                 "post_len": post_len}
     else:
         posts_data = False
+        post_len = 0
+
     return render_template("blog/index.html",
                            posts_data=posts_data, resp=resp, prev_limit=prev_limit, post_len=post_len)
 
 
 @posts_bp.route("/post/<blog_title>")
 def get_post_title(blog_title):
-    post = PostService().get_post_by_title(blog_title)
-    if post:
-        post_data = post
+    post_data = PostService().get_post_by_title(blog_title)
+    if len(post_data) > 0:
+        data_resp = {"post_data": post_data[0], "tags": post_data[1]}
+    else:
+        data_resp = {"post_data": False, "tags": False}
+
+    return render_template("blog/post.html", data_resp=data_resp, resp=resp)
+
+@posts_bp.route("/post/category/<tag>")
+def get_post_tag(tag):
+    prev_limit = request.args.get("prev_limit")
+    posts = tags_service.get_post_tags(tag)
+    if not prev_limit and posts:
+        post_len = len(posts)
+        prev_limit = os.environ.get("post_init_limit")
+        posts_data = posts[:int(prev_limit)]
+    elif prev_limit and posts:
+        post_len = len(posts)
+        new_limit = int(prev_limit) + int(os.environ.get("post_init_limit"))
+        posts_data = posts[int(prev_limit):new_limit]
+        posts_serialized = [posts_blog_service.serialize(
+            post) for post in posts_data]
+        return {"posts_resp": posts_serialized,
+        "posts_html_reponse": posts_blog_service.get_posts_html_resp(posts_serialized, len(posts_data), new_limit),
+                "prev_limit": new_limit,
+                "load_more": True,
+                "post_len": post_len}
     else:
-        post_data = False
+        return redirect(url_for("posts.blog"))
 
-    return render_template("blog/post.html", post_data=post_data, resp=resp)
+    return render_template("blog/index.html",
+                           posts_data=posts_data, resp=resp, prev_limit=prev_limit, post_len=post_len)
diff --git a/blog/posts/service/posts_blog_service.py b/blog/posts/service/posts_blog_service.py
@@ -10,8 +10,7 @@ def serialize(obj):
         "author": obj.author
     }
 
-
-def get_posts_html_resp(serialized_obj, post_len, limit):
+def get_posts_html_resp(serialized_obj, post_len, new_limit):
     str_concat = ""
     for post_obj in serialized_obj:
         if cache.get(str(post_len)):
@@ -21,8 +20,7 @@ def get_posts_html_resp(serialized_obj, post_len, limit):
             "</h2></a>" + "<p class='post-meta'>Posted by " + "<a href='#'>" + \
             post_obj["author"] + "</a> on " + post_obj["posted_date"] + "</p></div><hr>"
     cache.set(str(post_len), str_concat, timeout=50)
-    return str_concat
-
+    return str_concat               
     #if post_len > limit:
     #    # Add load more content
     #    str_concat += "<div class='clearfix'>" + "<button class='btn btn-primary float-right' id='load_more'>Older Posts &rarr;</button>" + \

diff --git a/blog/templates/blog/base.html b/blog/templates/blog/base.html
@@ -26,7 +26,7 @@
 
     <style>
         .newhead {
-        margin-bottom: 5px;
+        margin-bottom: 10px;
         background: no-repeat center center;
         /*background-color: #868e96;*/
         background-color: #DCDCDC;
@@ -66,7 +66,7 @@
 <body>
 
     <!-- Navigation -->
-    <nav class="navbar navbar-expand-lg bg-dark navbar-light fixed-top" id="mainNav">
+    <nav class="navbar navbar-expand-lg bg-info navbar-dark fixed-top" id="mainNav">
         <div class="container">
             <a class="navbar-brand" href="{{ url_for('posts.blog') }}">{{resp["blog_header"]}}</a>
             <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse"
@@ -97,7 +97,7 @@
     <footer>
         <div class="container">
             <div class="row">
-                <div class="col-lg-8 col-md-10 mx-auto">
+                <div class="col-lg-10 col-md-10 mx-auto">
                     <ul class="list-inline text-center">
                         <li class="list-inline-item">
                             <a href={{resp.social_linkedin}}>

diff --git a/blog/templates/blog/index.html b/blog/templates/blog/index.html
@@ -4,7 +4,7 @@
 <header class="newhead">
 <div class="container">
   <div class="row">
-    <div class="col-lg-8 col-md-10 mx-auto">
+    <div class="col-lg-10 col-md-10 mx-auto">
       <div class="site-heading">
         <h1>{{resp.blog_header}}</h1>
         <span class="subheading">{{resp.blog_subheader}}</span>
@@ -17,7 +17,7 @@ <h1>{{resp.blog_header}}</h1>
 <!-- Main Content -->
 <div class="container">
   <div class="row">
-    <div class="col-lg-8 col-md-10 mx-auto">
+    <div class="col-lg-10 col-md-10 mx-auto">
       <div class="display-posts">
       {% if posts_data %}
         {% for post in posts_data %}

diff --git a/blog/templates/blog/post.html b/blog/templates/blog/post.html
@@ -4,14 +4,22 @@
 <header class="newhead">
   <div class="container">
     <div class="row">
-      <div class="col-lg-8 col-md-10 mx-auto">
-        {% if post_data %}
+      <div class="col-lg-12 col-md-12 mx-auto">
+        {% if data_resp.post_data %}
         <div class="post-heading">
-          <h1>{{post_data.title}}</h1>
-          <!--<h2 class="subheading">Problems look mighty small from 150 miles up</h2>-->
-          <span class="meta">Posted by
-            <a href="#">{{post_data.author}}</a>
-            on {{post_data.posted_date.strftime('%B %d, %Y')}}</span>
+          <h1>{{data_resp.post_data.title}}</h1>
+          <div style="margin-top: 10px;">
+          {% for item in data_resp.tags %}
+            <a href="{{url_for('posts.get_post_tag', tag=item.tag)}}" style="display:inline-block" class="btn-info btn-sm" role="button">
+              {{item.tag}}
+            </a>
+          {% endfor %}
+        </div>
+          <div style="margin-top:10px;">
+            <span class="meta">Posted by
+              <a href="#">{{data_resp.post_data.author}}</a>
+              on {{data_resp.post_data.posted_date.strftime('%B %d, %Y')}}</span>
+          </div>
         </div>
       </div>
     </div>
@@ -21,8 +29,8 @@ <h1>{{post_data.title}}</h1>
 <article>
   <div class="container">
     <div class="row">
-      <div class="col-lg-8 col-md-10 mx-auto">
-        {{post_data.content|safe}}
+      <div class="col-lg-12 col-md-12 mx-auto">
+        {{data_resp.post_data.content|safe}}
       </div>
     </div>
   </div>

diff --git a/common/models/posts_model.py b/common/models/posts_model.py
@@ -2,6 +2,7 @@
 from common.models.images_model import Images
 from common.models.tags_model import Tags
 
+
 class Posts(db.Model):
     __tablename__ = "posts"
     p_id = db.Column(db.Integer, primary_key=True)
@@ -12,4 +13,4 @@ class Posts(db.Model):
     user_id = db.Column(db.Integer, db.ForeignKey("users.id"))
     modified_flag = db.Column(db.Boolean, default=False)
     images = db.relationship("Images", backref="posts", lazy=True)
-    category = db.relationship("Tags", backref="posts", lazy=True)
+    category = db.relationship("Tags", backref="posts", lazy="dynamic")
diff --git a/common/services/posts_service.py b/common/services/posts_service.py
@@ -34,7 +34,6 @@ def add_post(self, blog_title, blog_author, blog_content, curr_user, image_list,
         except exc.SQLAlchemyError:
             traceback.print_exc()
             return False
-
 
     def delete_post(self, post):
         try:
@@ -116,14 +115,18 @@ def get_all_posts(cls, order_by=False, is_admin=False):
     def get_post_by_title(cls, post_title, is_admin=False):
         if is_admin:
             post = posts_model.Posts.query.filter_by(title = post_title).first()
+            tags = tags_model.Tags.query.filter_by(posts=post).all()
+            post_set = [post, tags]
         elif cache.get(post_title):
-                print("Retreiving from cache")
-                post = cache.get(post_title)
+            print("Retreiving from cache")
+            post_set = cache.get(post_title)
         else:
             print("Not yet cached, caching the current post details")
             post = posts_model.Posts.query.filter_by(title = post_title).first()
-            cache.set(post_title, post, timeout=50)
-        return post
+            tags = tags_model.Tags.query.filter_by(posts=post).all()
+            cache.set(post_title, [post, tags], timeout=50)
+            post_set = [post, tags]
+        return post_set
 
     @classmethod
     def get_tags_for_post(cls, post):

diff --git a/common/services/tags_service.py b/common/services/tags_service.py
@@ -0,0 +1,22 @@
+from common import cache
+from common.models import tags_model, posts_model
+
+
+def get_post_tags(tag_name):
+    if cache.get(tag_name):
+        print("Retreiving the posts from cache for the tag", tag_name)
+        posts = cache.get(tag_name)
+    else:
+        print("Not yet cached retreiving from db for the tag", tag_name)
+        tags_db_list = tags_model.Tags.query.filter_by(tag=tag_name).all()
+        if len(tags_db_list) > 0:
+            posts = []
+            for db_tag in tags_db_list:
+                print(db_tag.posts.title)
+                print(db_tag.posts.posted_date)
+                posts.append(db_tag.posts)
+            cache.set(tag_name, posts, timeout=50)
+        else:
+            return False
+
+    return posts