VRFS-1478 allow multiple session invites to same user

db/manifest

@@ -197,4 +197,5 @@ update_sms_index.sql
 connection_allow_null_locidispid.sql
 track_user_in_scores.sql
 median_aggregate.sql
-current_scores_use_median.sql
+current_scores_use_median.sql
+drop_session_invite_constraint.sql

db/up/drop_session_invite_constraint.sql

@@ -0,0 +1 @@
+ALTER TABLE invitations DROP CONSTRAINT invitations_uniqkey;

web/app/assets/javascripts/inviteMusicians.js

@@ -45,10 +45,12 @@
 
             if (0 == $(elemSelector + ' .friendbox').length) {
                 _appendFriendSelector($(elemSelector));
-                $('#btn-save-invites').click(function() {
-                    createInvitations(updateSessionID);
-                });
             }
+
+            $('#btn-save-invites').click(function() {
+              createInvitations(updateSessionID);
+            });
+
             $.ajax({
                 url: "/api/invitations",
                 data: { session_id:  sessionId, sender: context.JK.currentUserId }
@@ -126,8 +128,7 @@
                 var imgStyle = _inviteExists(data) ? 'display:none' : '';
                 var invitationHtml = context.JK.fillTemplate(template, 
                                                              {userId: data, 
-                                                              userName: value,
-                                                              imageStyle: imgStyle});
+                                                              userName: value});
                 $('.selected-friends').append(invitationHtml);
                 $(friendInput).select();
                 invitedFriends.push(data);
@@ -162,22 +163,20 @@
 
         function createInvitations(sessionId, onComplete) {
             var callCount = 0;
-            var totalInvitations = invitedFriends.length - existingInvites.length;
+            var totalInvitations = invitedFriends.length;
             invitedFriends.map(function(invite_id) {
-                if (!_inviteExists(invite_id)) { 
-                    callCount++;
-                    var invite = {
-                        music_session: sessionId,
-                        receiver: invite_id
-                    };
-                    $.ajax({
-                        type: "POST",
-                        url: "/api/invitations",
-                        data: invite
-                    }).done(function(response) {
-                        callCount--;
-                    }).fail(app.ajaxError);
-                }
+              callCount++;
+              var invite = {
+                  music_session: sessionId,
+                  receiver: invite_id
+              };
+              $.ajax({
+                  type: "POST",
+                  url: "/api/invitations",
+                  data: invite
+              }).done(function(response) {
+                  callCount--;
+              }).fail(app.ajaxError);
             });
             // TODO - this is the second time I've used this pattern.
             // refactor to make a common utility for this.

web/app/views/clients/_inviteMusicians.html.erb

@@ -31,6 +31,6 @@
 <!-- Added Invitation Template -->
 <script type="text/template" id="template-added-invitation">
     <div user-id="{userId}" class="invitation">{userName} 
-        <a><%= image_tag "shared/icon_delete_sm.png", :size => "13x13", :style => "{imageStyle}" %></a>
+        <a><%= image_tag "shared/icon_delete_sm.png", :size => "13x13" %></a>
     </div>
 </script>