autocomplete.js sample_set.py pass input value to controller

implement a new filter callback in order to pass the value of the input
to the controller while maintaining a datastructure that is compatible
with the existing js code base.
Cache is stored based on the query typed into the input.

browser/js/autocomplete.js

@@ -192,6 +192,18 @@ VidjilAutoComplete.prototype = {
             });
         };
 
+        callbacks.filter = function(query, data, searchKey) {
+            var fetchData = self.fetchData.bind(self);
+            var isLoaded = self.isLoaded.bind(self);
+            var keys = [this.$inputor.val()];
+            if (VidjilAutoComplete.isLoading(data) || !isLoaded(keys)) {
+                this.$inputor.atwho('load', this.at, VidjilAutoComplete.defaultLoadingData);
+                fetchData(this.$inputor, this.at, keys);
+                return data;
+            }
+            return $.fn.atwho.default.callbacks.filter(query, data, searchKey);
+        };
+
         $input.atwho({
             at: at,
             alias: 'samples',

server/web2py/applications/vidjil/controllers/sample_set.py

@@ -804,10 +804,12 @@ def auto_complete():
     if "keys" not in request.vars:
         return error_message("missing group ids")
 
-    query = json.loads(request.vars['keys'])
+    query = json.loads(request.vars['keys'])[0]
     sample_types = [defs.SET_TYPE_PATIENT, defs.SET_TYPE_RUN, defs.SET_TYPE_GENERIC]
     result = []
     for sample_type in sample_types:
         result += get_sample_set_list(sample_type, query)
 
-    return json.dumps(result)
+    res = {}
+    res[query] = result
+    return json.dumps(res)