forum: add basic comment edition with preview

Limitations:
* Works only for registered users
* Does not redirect to the proper MainPost page
* Does not check permissions

app/forms/forum.py

@@ -21,3 +21,12 @@ class CommentForm(FlaskForm):
 class AnonymousCommentForm(CommentForm):
     pseudo = StringField('Pseudo',
         validators=[DataRequired(), vd.name_valid, vd.name_available])
+
+
+class CommentEditForm(CommentForm):
+    submit = SubmitField('Valider les modifications')
+    preview = SubmitField('Prévisualiser')
+
+class AnonymousCommentEditForm(CommentEditForm):
+    pseudo = StringField('Pseudo',
+        validators=[DataRequired(), vd.name_valid, vd.name_available])

app/routes/__init__.py

@@ -5,3 +5,4 @@ from app.routes.account import login, account, notification
 from app.routes.admin import index, groups, account, trophies, forums
 from app.routes.forum import index, topic
 from app.routes.programs import index
+from app.routes.posts import edit

app/routes/account/account.py

@@ -130,7 +130,7 @@ def validation():
     try:
         mail = request.args['email']
     except Exception as e:
-        print("Error: {e}")
+        print(f"Error: {e}")
         abort(404)
 
     if current_user.is_authenticated:

app/routes/posts/edit.py

@@ -0,0 +1,34 @@
+from app import app, db
+from app.models.post import Post
+from app.utils.render import render
+from app.forms.forum import CommentEditForm, AnonymousCommentEditForm
+from flask import redirect, url_for, abort
+from flask_login import login_required, current_user
+
+@app.route('/post/<int:postid>', methods=['GET','POST'])
+# TODO: Allow guest edit of posts
+@login_required
+def edit_post(postid):
+    p = Post.query.filter_by(id=postid).first_or_404()
+
+    # TODO: Check whether privileged user has access to board
+    if p.author != current_user and not current_user.priv("edit-posts"):
+        abort(403)
+
+    if p.type == "comment":
+        form = CommentEditForm()
+
+        if form.validate_on_submit():
+            p.text = form.message.data
+
+            if form.submit.data:
+                db.session.add(p)
+                db.session.commit()
+
+                # TODO: Proper redirection
+                return redirect(url_for('index'))
+
+        form.message.data = p.text
+        return render('forum/edit_comment.html', comment=p, form=form)
+    else:
+        abort(404)

app/templates/forum/edit_comment.html

@@ -0,0 +1,41 @@
+{% extends "base/base.html" %}
+{% import "widgets/editor.html" as widget_editor %}
+{% import "widgets/user.html" as widget_user %}
+
+{% block title %}
+<a href='/forum'>Forum de Planète Casio</a> » Édition de commentaire</h1>
+{% endblock %}
+
+{% block content %}
+<section>
+	<h1>Édition de commentaire</h1>
+
+	<h3>Commentaire actuel</h3>
+	<table class="thread">
+		<tr>
+			<td class="author">{{ widget_user.profile(comment.author) }}</td>
+			<td><div>{{ comment.text }}</div></td>
+		</tr>
+	</table>
+
+	<div class="form">
+		<h3>Nouveau commentaire</h3>
+		<form action="" method="post" enctype="multipart/form-data">
+			{{ form.hidden_tag() }}
+
+			{% if form.pseudo %}
+				{{ form.pseudo.label }}
+				{{ form.pseudo }}
+				{% for error in form.pseudo.errors %}
+				<span class="msgerror">{{ error }}</span>
+				{% endfor %}
+			{% endif %}
+
+			{{ widget_editor.text_editor(form.message, label=False) }}
+
+			<div>{{ form.preview(class_='bg-ok') }}</div>
+			<div>{{ form.submit(class_='bg-ok') }}</div>
+		</form>
+	</div>
+</section>
+{% endblock %}

app/templates/forum/topic.html

@@ -29,7 +29,7 @@
                     Posté le {{ c.date_created|dyndate }}
                 {% endif %}
                 | <a href="{{ url_for('forum_topic', f=t.forum, page=(t,comments.page), _anchor=c.id) }}">#</a>
-                | <a href="#">Modifier</a>
+                | <a href="{{ url_for('edit_post', postid=c.id) }}">Modifier</a>
                 | <a href="#">Supprimer</a>
                 </div>
                 <!--<hr>-->