fix: properly build out parent context chain

Closes #1191

packages/form-js-viewer/src/features/repeatRender/RepeatRenderManager.js

@@ -228,7 +228,7 @@ const RepetitionScaffold = (props) => {
     () => ({
       data: parentExpressionContextInfo.data,
       this: itemValue,
-      parent: buildExpressionContext(parentExpressionContextInfo),
+      parent: buildExpressionContext({ ...parentExpressionContextInfo, data: parentExpressionContextInfo.this }),
       i: [...parentExpressionContextInfo.i, itemIndex + 1],
     }),
     [itemIndex, parentExpressionContextInfo, itemValue],

packages/form-js-viewer/test/spec/Form.spec.js

@@ -12,6 +12,7 @@ import conditionErrorsDynamicListSchema from './condition-errors-dynamic-list.js
 import dynamicListVariablesSchema from './dynamic-list-variables.json';
 import dynamicListTableFilterInteractionSchema from './dynamic-list-table-filter-interaction.json';
 import complexExpressionsSchema from './complex-expressions.json';
+import nestedComplexContextSchema from './nested-complex-context.json';
 import cyclicalExpressionsSchema from './cyclical-expressions.json';
 import chainExpressionsSchema from './chain-expressions.json';
 import hiddenFieldsConditionalSchema from './hidden-fields-conditional.json';
@@ -1782,6 +1783,45 @@ describe('Form', function () {
       ]);
     });
   });
+
+  describe('integration - context', function () {
+    it('should properly pass down context and parent accessors', async function () {
+      // given
+      const data = {
+        a: 'testA',
+        list: [
+          {
+            b: 'testB',
+          },
+        ],
+      };
+
+      // when
+      await bootstrapForm({
+        container,
+        data,
+        schema: nestedComplexContextSchema,
+      });
+
+      // then
+      expect(form).to.exist;
+
+      // Select all fjs-form-field-text elements
+      const textFields = container.querySelectorAll('.fjs-form-field-text');
+
+      // Check the contents of the first fjs-form-field-text element
+      expect(textFields[0]).to.exist;
+      expect(textFields[0].textContent).to.include('Flat: testA');
+      expect(textFields[0].textContent).to.include('Parent: testA');
+
+      // Check the contents of the second fjs-form-field-text element
+      expect(textFields[1]).to.exist;
+      expect(textFields[1].textContent).to.include('ParentThis: testB');
+      expect(textFields[1].textContent).to.include('Parent: testB');
+      expect(textFields[1].textContent).to.include('GrandParent: testA');
+      expect(textFields[1].textContent).to.include('GrandParentThis: testA');
+    });
+  });
 });
 
 // helpers //////////

packages/form-js-viewer/test/spec/nested-complex-context.json

@@ -0,0 +1,80 @@
+{
+  "components": [
+    {
+      "label": "Test",
+      "type": "textfield",
+      "layout": {
+        "row": "Row_06pau7i",
+        "columns": null
+      },
+      "id": "Field_0naxgdd",
+      "key": "a"
+    },
+    {
+      "components": [
+        {
+          "text": "Flat: {{a}}\nParent: {{parent.a}}",
+          "label": "Text view",
+          "type": "text",
+          "layout": {
+            "row": "Row_0e00xn8",
+            "columns": null
+          },
+          "id": "Field_03g3bvj"
+        },
+        {
+          "label": "Test",
+          "type": "textfield",
+          "layout": {
+            "row": "Row_0nqe5bi",
+            "columns": null
+          },
+          "id": "Field_0oofqh4",
+          "key": "b"
+        },
+        {
+          "components": [
+            {
+              "text": "ParentThis: {{parent.this.b}}\nParent: {{parent.b}}\nGrandParent: {{parent.parent.a}}\nGrandParentThis: {{parent.parent.this.a}}",
+              "label": "Text view",
+              "type": "text",
+              "layout": {
+                "row": "Row_17ftgn9",
+                "columns": null
+              },
+              "id": "Field_1bjzda6"
+            }
+          ],
+          "showOutline": true,
+          "isRepeating": true,
+          "allowAddRemove": true,
+          "defaultRepetitions": 1,
+          "label": "Dynamic list",
+          "type": "dynamiclist",
+          "layout": {
+            "row": "Row_0kn6m8y",
+            "columns": null
+          },
+          "id": "Field_033ey1v",
+          "path": "dynamiclist_lkkpkli"
+        }
+      ],
+      "showOutline": true,
+      "isRepeating": true,
+      "allowAddRemove": true,
+      "defaultRepetitions": 1,
+      "label": "Dynamic list",
+      "type": "dynamiclist",
+      "layout": {
+        "row": "Row_1d2g3ok",
+        "columns": null
+      },
+      "id": "Field_1d4j6bh",
+      "path": "list"
+    }
+  ],
+  "$schema": "../../../form-json-schema/resources/schema.json",
+  "type": "default",
+  "id": "Form_1roxfho",
+  "schemaVersion": 16
+}