From 9aaf14c803021f8bcc4292887af42cce92b30a77 Mon Sep 17 00:00:00 2001
From: Gareth Coles <gdude2002@gmail.com>
Date: Thu, 12 Apr 2018 16:41:39 +0100
Subject: [Wiki] Fix pages being wiped when saved without edits

---
 pysite/views/wiki/edit.py     | 5 +++++
 templates/wiki/page_edit.html | 9 ++++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/pysite/views/wiki/edit.py b/pysite/views/wiki/edit.py
index a2e98e20..0d70fed5 100644
--- a/pysite/views/wiki/edit.py
+++ b/pysite/views/wiki/edit.py
@@ -1,5 +1,6 @@
 # coding=utf-8
 from flask import request, url_for
+from werkzeug.exceptions import BadRequest
 from werkzeug.utils import redirect
 
 from pysite.base_route import RouteView
@@ -35,6 +36,10 @@ class EditView(RouteView, DBMixin):
     @csrf
     def post(self, page):
         rst = request.form["rst"]
+
+        if not rst.strip():
+            raise BadRequest()
+
         rendered = render(rst)
 
         obj = {
diff --git a/templates/wiki/page_edit.html b/templates/wiki/page_edit.html
index b797577d..b59a8912 100644
--- a/templates/wiki/page_edit.html
+++ b/templates/wiki/page_edit.html
@@ -14,7 +14,7 @@
             <button class="uk-button uk-button-secondary" type="button" value="Preview" id="preview">Preview</button>
         </div>
         <div class="uk-width-auto">
-            <input class="uk-button uk-button-primary" type="submit" id="submit" value="Save" />
+            <input class="uk-button uk-button-primary" type="submit" id="submit" value="Save" disabled />
         </div>
         <div class="uk-width-1-1">
             <div id="editor" class="uk-textarea" style="resize: vertical; min-height: 15rem;">{{ rst }}</div>
@@ -61,6 +61,13 @@
                 }
             });
 
+            let data = editor.getValue();
+
+            if (data.replace("\s", "").length < 1) {
+                document.getElementById("submit").disabled = true;
+                return false;
+            }
+
             oReq.open("POST", "/render");
 
             oReq.setRequestHeader("Content-type", "application/json");
-- 
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