[FIX] web: Domain: don't return frozen domain

In a recent commit, the fields object describing all fields of a
model is (deeply) frozen by the data_manager. As a consequence, if
a field has a domain (represented by an Array), this domain is
frozen as well.

Moreover, when the function getDomain is called on a dataPoint,
the returned domain is the one in fields, not a copy.

Problem is that the Many2One field updates this domain to add the
blacklisted ids, which produces an error if the domain is frozen.

1 files changed, 1 insertions, 1 deletions

diff --git a/addons/web/static/src/js/core/domain.js b/addons/web/static/src/js/core/domain.js
index 4749d736f2a..7b873926727 100644
--- a/addons/web/static/src/js/core/domain.js
+++ b/addons/web/static/src/js/core/domain.js
@@ -222,7 +222,7 @@ var Domain = collections.Tree.extend({
      * @returns {Array}
      */
     stringToArray: function (domain, evalContext) {
-        if (!_.isString(domain)) return domain;
+        if (!_.isString(domain)) return _.clone(domain);
         return pyeval.eval("domain", domain || "[]", evalContext);
     },
     /**