Fix bug where mapping is sometimes wrongly submitted as a GET request

I think this bug was caused by changing the /run_mapping endpoint to
accept both GET and POST requests, and it only seemed to occur for some
users (only Rob that I'm aware of).

I'm still not sure why it was happening, but I addressed it by returning
/run_mapping to being only POST requests, and instead allowing the
mapping hashes to be linked to with the pattern /run_mapping/<hash>
(instead of the GET request /run_mapping?hash=<hash>). This appears to
have prevented the problem from happening.

2 files changed, 5 insertions, 5 deletions

diff --git a/wqflask/wqflask/templates/mapping_results.html b/wqflask/wqflask/templates/mapping_results.html
index b1e1b5c8..03ea3872 100644
--- a/wqflask/wqflask/templates/mapping_results.html
+++ b/wqflask/wqflask/templates/mapping_results.html
@@ -676,7 +676,7 @@
         })
 
         hash = $('input[name=inputs_hash]').val();
-        mappingLink = window.location.origin + "/run_mapping?hash=" + hash;
+        mappingLink = window.location.origin + "/run_mapping/"+ hash;
         $('input[name=mappingLink]').width(mappingLink.length*0.95 + "ch")
         $('input[name=mappingLink]').val(mappingLink);
         $('.share-results').click(function() {
diff --git a/wqflask/wqflask/views.py b/wqflask/wqflask/views.py
index ca2c34cd..320a98ef 100644
--- a/wqflask/wqflask/views.py
+++ b/wqflask/wqflask/views.py
@@ -702,10 +702,10 @@ def loading_page():
     return rendered_template
 
 
-@app.route("/run_mapping", methods=('POST','GET'))
-def mapping_results_page():
-    if request.method == "GET" and (hash_of_inputs := request.args.get("hash")):
-        hash_of_inputs = request.args.get("hash")
+@app.route("/run_mapping", methods=('POST',))
+@app.route("/run_mapping/<path:hash_of_inputs>")
+def mapping_results_page(hash_of_inputs=None):
+    if hash_of_inputs:
         initial_start_vars = json.loads(Redis.get(hash_of_inputs))
         initial_start_vars['hash_of_inputs'] = hash_of_inputs
     else: