[FIX] web: pass context of changed field to onchange RPC

When a field with an onchange is changed, if there is a context
defined on the field in the arch, this context must be added to
the context sent with the onchange RPC.

1 files changed, 6 insertions, 3 deletions

diff --git a/addons/web/static/src/js/views/basic/basic_model.js b/addons/web/static/src/js/views/basic/basic_model.js
index c95325dbb87..47ce8ad3780 100644
--- a/addons/web/static/src/js/views/basic/basic_model.js
+++ b/addons/web/static/src/js/views/basic/basic_model.js
@@ -861,12 +861,15 @@ var BasicModel = AbstractModel.extend({
         var self = this;
         var onchange_spec = this._buildOnchangeSpecs(record);
         var idList = record.data.id ? [record.data.id] : [];
-        var context = this._getContext(record);
-        var currentData = this._generateOnChangeData(record);
-
+        var options = {};
         if (fields.length === 1) {
             fields = fields[0];
+            // if only one field changed, add its context to the RPC context
+            options.fieldName = fields;
         }
+        var context = this._getContext(record, options);
+        var currentData = this._generateOnChangeData(record);
+
         return self._rpc({
                 model: record.model,
                 method: 'onchange',