[FIX] web: properly compute contexts in some cases

When we have a many2one widget in a one2many, editable, the context was
not properly computed: it expected the parent to be a record object, but
in that case, it is a list object.

addons/web/static/src/js/views/basic/basic_model.js

@@ -1555,6 +1555,9 @@ var BasicModel = AbstractModel.extend({
         var evalContext = this.get(element.id, {raw: true}).data;
         if (element.parentID) {
             var parent = this.get(element.parentID, {raw: true});
+            if (parent.type === 'list' && this.localData[element.parentID].parentID) {
+                parent = this.get(this.localData[element.parentID].parentID, {raw: true});
+            }
             _.extend(evalContext, {parent: parent.data});
         }
         context.set_eval_context(evalContext);
@@ -1846,11 +1849,12 @@ var BasicModel = AbstractModel.extend({
                     dataPoint = self.localData[list._cache[id]];
                 } else {
                     dataPoint = self._makeDataPoint({
-                        modelName: list.model,
                         data: _.findWhere(records, {id: id}),
-                        fields: list.fields,
-                        fieldNames: list.fieldNames,
                         fieldAttrs: list.fieldAttrs,
+                        fieldNames: list.fieldNames,
+                        fields: list.fields,
+                        modelName: list.model,
+                        parentID: list.id,
                     });
 
                     // add many2one records
@@ -1862,7 +1866,8 @@ var BasicModel = AbstractModel.extend({
                                 data: {
                                     id: dataPoint.data[name][0],
                                     display_name: dataPoint.data[name][1],
-                                }
+                                },
+                                parentID: dataPoint.id,
                             });
 
                             dataPoint.data[name] = r.id;
@@ -1905,6 +1910,7 @@ var BasicModel = AbstractModel.extend({
                     fieldNames: list.fieldNames,
                     fieldAttrs: list.fieldAttrs,
                     modelName: list.model,
+                    parentID: list.id,
                 });
 
                 // add many2one records

addons/web/static/test/fields/relational_fields_tests.js

@@ -1431,6 +1431,44 @@ QUnit.module('relational_fields', {
         form.destroy();
     });
 
+    QUnit.test('one2many list, editable, with many2one and with context with parent key', function (assert) {
+        assert.expect(1);
+
+        this.data.partner.records[0].p = [2];
+        this.data.partner.records[1].product_id = 37;
+
+        var form = createView({
+            View: FormView,
+            model: 'partner',
+            data: this.data,
+            arch: '<form string="Partners">' +
+                    '<field name="foo"/>' +
+                    '<field name="p">' +
+                        '<tree editable="bottom">' +
+                            '<field name="product_id" context="{\'partner_foo\':parent.foo}"/>' +
+                        '</tree>' +
+                    '</field>' +
+                '</form>',
+            res_id: 1,
+            mockRPC: function (route, args) {
+                if (args.method === 'name_search') {
+                    assert.strictEqual(args.kwargs.context.partner_foo, "yop",
+                        "should have correctly evaluated parent foo field");
+                }
+                return this._super.apply(this, arguments);
+            },
+        });
+
+        form.$buttons.find('.o_form_button_edit').click();
+
+        form.$('tr.o_data_row:eq(0) td:contains(xphone)').click();
+
+        // trigger a name search
+        form.$('table td input.o_form_input').click();
+
+        form.destroy();
+    });
+
     QUnit.test('one2many list edition, some basic functionality', function (assert) {
         assert.expect(3);