From a2e408daf9d0155f1acc43e360da5ac5c09cb783 Mon Sep 17 00:00:00 2001
From: Darks <l.gatin@neuf.fr>
Date: Sat, 7 Dec 2019 16:06:00 +0100
Subject: [PATCH] Ajout du load dynmaique des messages (#39)

---
 app/models/comment.py          |  4 +++-
 app/routes/forum/topic.py      | 10 +++++++++-
 app/templates/forum/topic.html |  4 ++--
 config.py                      |  2 ++
 4 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/app/models/comment.py b/app/models/comment.py
index b9e60f2..a27617c 100644
--- a/app/models/comment.py
+++ b/app/models/comment.py
@@ -1,5 +1,6 @@
 from app import db
 from app.models.post import Post
+from sqlalchemy.orm import backref
 
 class Comment(Post):
     __tablename__ = 'comment'
@@ -14,7 +15,8 @@ class Comment(Post):
     # Parent thread
     thread_id = db.Column(db.Integer, db.ForeignKey('thread.id'),
         nullable=False)
-    thread = db.relationship('Thread', backref='comments',
+    thread = db.relationship('Thread',
+        backref=backref('comments', lazy='dynamic'),
         foreign_keys=thread_id)
 
     def __init__(self, author, text, thread):
diff --git a/app/routes/forum/topic.py b/app/routes/forum/topic.py
index bf02827..dcebd61 100644
--- a/app/routes/forum/topic.py
+++ b/app/routes/forum/topic.py
@@ -38,4 +38,12 @@ def forum_topic(f, t):
     db.session.merge(t)
     db.session.commit()
 
-    return render('/forum/topic.html', t=t, form=form)
+    if request.args.get('page') == "last":
+        page = t.thread.comments.count() // V5Config.COMMENTS_PER_PAGE + 1
+    else:
+        page = request.args.get('page', 1, type=int)
+
+    comments = t.thread.comments.paginate(page,
+        V5Config.COMMENTS_PER_PAGE, True)
+
+    return render('/forum/topic.html', t=t, form=form, comments=comments)
diff --git a/app/templates/forum/topic.html b/app/templates/forum/topic.html
index 456b34d..0008d36 100644
--- a/app/templates/forum/topic.html
+++ b/app/templates/forum/topic.html
@@ -15,7 +15,7 @@
 	</tr></table>
 
 	<table class="thread">
-    {% for i, c in enumerate(t.thread.comments) %}
+    {% for c in comments.items %}
     	<tr>
         {% if c != t.thread.top_comment %}
         	<td class="member">{{ widget_member.profile(c.author ) }}</td>
@@ -27,7 +27,7 @@
                 {% endif %}
                 <hr>
                 <p>{{ c.text }}</p>
-        {% elif i != 0 %}
+        {% elif loop.index0 != 0 %}
             <div>Ce message est le top comment</div>
         {% endif %}
         </td>
diff --git a/config.py b/config.py
index 1b50051..65b2ae0 100644
--- a/config.py
+++ b/config.py
@@ -25,6 +25,8 @@ class V5Config(LocalConfig):
     PASSWORD_MINLEN = 10
     # Maximum thread name length
     THREAD_NAME_MAXLEN = 32
+    # Amount of comments per thread page
+    COMMENTS_PER_PAGE = 20
     # Remember-me cookie duration time
     REMEMBER_COOKIE_DURATION = datetime.timedelta(days=7)
     # XP points for content posting (and deletion)