# HG changeset patch
# User jbe
# Date 1520856019 -3600
# Node ID 257dd2933ab2e1694031cc45725690f1906b9fe1
# Parent  b19a6b4f61f35f2708eff500b12dc76cada242ff
Avoid including duplicate IDs when fetching referenced records

diff -r b19a6b4f61f3 -r 257dd2933ab2 libraries/mondelefant/mondelefant.lua
--- a/libraries/mondelefant/mondelefant.lua	Mon Jan 15 20:13:32 2018 +0100
+++ b/libraries/mondelefant/mondelefant.lua	Mon Mar 12 13:00:19 2018 +0100
@@ -1521,11 +1521,15 @@
       local options = options or {}
       local model = get_model()
       -- TODO: too many records cause PostgreSQL command stack overflow
+      local ids_used = {}
       local ids = { sep = ", " }
       for i, object in ipairs(list) do
         local id = object[this_key]
         if id ~= nil then
-          ids[#ids+1] = {"?", id}
+          if not ids_used[id] then
+            ids[#ids+1] = {"?", id}
+            ids_used[id] = true
+          end
         end
       end
       if #ids == 0 then