persist ppl's edit text on failure

files/assets/js/core.js

@@ -327,6 +327,14 @@ function sendFormXHRSwitch(form) {
 	)
 }
 
+function sendFormXHRReload(form) {
+	sendFormXHR(form,
+		() => {
+			location.reload();
+		}
+	)
+}
+
 let sortAscending = {};
 
 function sort_table(t) {

files/routes/posts.py

@@ -1089,5 +1089,4 @@ def edit_post(pid, v):
 		)
 		g.db.add(ma)
 
-
-	return redirect(p.permalink)
+	return {"message": "Post edited successfully!"}

files/templates/post.html

@@ -157,7 +157,7 @@
 
 					{% if v and v.can_edit(p) and not v.is_suspended %}
 						<div id="edit-post-body-{{p.id}}" class="d-none comment-write collapsed child">
-							<form id="post-edit-form-{{p.id}}" action="/edit_post/{{p.id}}" method="post" enctype="multipart/form-data">
+							<form id="post-edit-form-{{p.id}}" action="/edit_post/{{p.id}}" method="post" enctype="multipart/form-data" data-nonce="{{g.nonce}}" data-onsubmit="sendFormXHRReload(this)">
 									<input hidden name="formkey" value="{{v|formkey}}">
 									<input hidden name="current_page" value="{{request.path}}">
 									<textarea id="post-edit-title" autocomplete="off" max-length="500" name="title" class="comment-box form-control rounded" required placeholder="title">{{p.title}}</textarea>