[FIX] web: contexts on field widgets + enforce bin_size for binary

Field widgets now have a key 'context' that let them
extend the context of the dataPoint (e.g. list).

In particular, widgets on binary fields enforce the contextual
item {bin_size: True}, so that the server gives the size of the
binary field as its value, instead of its content.

This change on binary fields reduces network load when accessing
a view with binary fields.

1 files changed, 4 insertions, 0 deletions

diff --git a/addons/web/static/src/js/services/data_manager.js b/addons/web/static/src/js/services/data_manager.js
index 9b11f3a54a7..6e39ede94e8 100644
--- a/addons/web/static/src/js/services/data_manager.js
+++ b/addons/web/static/src/js/services/data_manager.js
@@ -387,6 +387,10 @@ return core.Class.extend({
             attrs.fieldDependencies = attrs.Widget.prototype.fieldDependencies;
         }
 
+        if (attrs.Widget.prototype.context) {
+            attrs.context = attrs.Widget.prototype.context;
+        }
+
         return attrs;
     },
     /**