Use url_for properly across the application

tedimg/images.py

@@ -12,8 +12,8 @@ def get_image(root, name):
     """ Try and get basic image attributes.
     """
     filename = urllib.parse.quote(os.path.basename(name))
-    return (root + os.path.join(app.config["FULL_WEB"], filename),
-            root + os.path.join(app.config["THUMB_WEB"], filename))
+    return (os.path.join(root, app.config["FULL_WEB"], filename),
+            os.path.join(root, app.config["THUMB_WEB"], filename))
 
 
 def image_from_file(file_storage):

tedimg/templates/index.html

@@ -2,7 +2,7 @@
 
 {% block banner_content %}
 <h1 class="header center orange-text">Upload your image!</h1>
-<form method="post" id="upload" action="/upload" enctype="multipart/form-data">
+<form method="post" id="upload" action="{{ url_for('upload') }}" enctype="multipart/form-data">
   <div class="file-field input-field">
     <div>
       <i class="material-icons left small">publish</i>

tedimg/templates/show.html

@@ -11,7 +11,6 @@
 </div>
 {% endblock %}
 
-
 {% block section_content %}
 <div class="row">
   <div class="col s6">

tedimg/views.py

@@ -37,4 +37,4 @@ def upload():
         return flask.render_template("error.html", message="Could not store your image.")
     # Save the image to a local file
     result = images.save_with_thumbnail(image, filename)
-    return flask.redirect("/show/" + result)
+    return flask.redirect(flask.url_for("show", path=result))