feat(form): add more case info to jexl context

caluma/caluma_form/structure.py

@@ -49,6 +49,8 @@ def get(self, name, default=None):
             out = out()
         if isinstance(out, Element) or isinstance(out, dict):
             return out
+        if out is None:
+            return None
         return str(out)
 
 
@@ -134,7 +136,7 @@ def children(self):
 
 
 class FieldSet(Element):
-    aliases = {"formMeta": "form_meta", "mainCaseForm": "main_case_form"}
+    aliases = {"formMeta": "form_meta"}
 
     def __init__(self, document, form, question=None, parent=None):
         super().__init__(parent)
@@ -144,18 +146,37 @@ def __init__(self, document, form, question=None, parent=None):
         self.question = question
         self._fields = None
         self._sub_forms = None
-        self._main_case_form = "NOTSET"
+        self._case = "NOTSET"
 
     @property
-    def main_case_form(self):
-        if self._main_case_form == "NOTSET":
-            try:
-                self._main_case_form = (
-                    self.document.family.work_item.case.family.document.form.slug
-                )
-            except Exception:  # pragma: no cover
-                self._main_case_form = None
-        return self._main_case_form
+    def case(self):
+        if self._case != "NOTSET":
+            return self._case  # pragma: no cover
+
+        if hasattr(self.document.family, "work_item"):
+            case = self.document.family.work_item.case
+        elif hasattr(self.document.family, "case"):
+            # if we're not in a task form, we might be the root document
+            case = self.document.family.case
+        else:
+            self._case = None
+            return self._case
+
+        if hasattr(case, "parent_work_item"):
+            root = case.parent_work_item.case.family
+            root_info = {
+                "form": root.document.form.slug,
+                "workflow": root.workflow.slug,
+            }
+        else:
+            root_info = None
+
+        self._case = {
+            "form": case.document.form.slug,
+            "workflow": case.workflow.slug,
+            "root": root_info,
+        }
+        return self._case
 
     @property
     def fields(self):

caluma/caluma_form/tests/test_jexl.py

@@ -188,30 +188,51 @@ def test_reference_missing_question(
 
 
 @pytest.mark.parametrize(
-    "question,expr,expectation,features",
+    "question,expr,expectation,document_owner",
     [
-        ("sub_question", "info.form == 'sub_form'", True, "subform"),
-        ("sub_question", "info.formMeta.level == 1", True, "subform"),
-        ("sub_question", "info.formMeta['is-top-form']", False, "subform"),
-        ("sub_question", "info.formMeta['non-existent-key'] == null", True, "subform"),
-        ("sub_question", "info.parent.form == 'top_form'", True, "subform"),
-        ("sub_question", "info.parent.formMeta.level == 0", True, "subform"),
-        ("sub_question", "info.parent.formMeta['is-top-form']", True, "subform"),
-        ("sub_question", "info.mainCaseForm == 'main-case-form'", True, "subform"),
-        ("column", "info.parent.form == 'top_form'", True, "table"),
-        ("column", "info.parent.formMeta.level == 0", True, "table"),
-        ("column", "info.parent.formMeta['is-top-form']", True, "table"),
-        ("column", "info.root.form == 'top_form'", True, "table"),
-        ("column", "info.root.formMeta.level == 0", True, "table"),
-        ("column", "info.root.formMeta['is-top-form']", True, "table"),
-        ("column", "info.mainCaseForm == 'main-case-form'", True, "table"),
+        ("sub_question", "info.case.form == 'top_form'", True, "root_case"),
+        ("sub_question", "info.case.form == 'child-case-form'", True, "child_case"),
+        (
+            "sub_question",
+            "info.case.workflow == 'child-case-workflow'",
+            True,
+            "child_case",
+        ),
+        ("sub_question", "info.case.root.form == 'main-case-form'", True, "child_case"),
+        (
+            "sub_question",
+            "info.case.root.workflow == 'main-case-workflow'",
+            True,
+            "child_case",
+        ),
+        ("sub_question", "info.form == 'sub_form'", True, "child_case"),
+        ("sub_question", "info.formMeta.level == 1", True, "child_case"),
+        ("sub_question", "info.formMeta['is-top-form']", False, "child_case"),
+        (
+            "sub_question",
+            "info.formMeta['non-existent-key'] == null",
+            True,
+            "child_case",
+        ),
+        ("sub_question", "info.parent.form == 'top_form'", True, "child_case"),
+        ("sub_question", "info.parent.formMeta.level == 0", True, "child_case"),
+        ("sub_question", "info.parent.formMeta['is-top-form']", True, "child_case"),
+        ("column", "info.case.form == 'top_form'", True, "root_case"),
+        ("column", "info.parent.form == 'top_form'", True, "child_case"),
+        ("column", "info.parent.formMeta.level == 0", True, "child_case"),
+        ("column", "info.parent.formMeta['is-top-form']", True, "child_case"),
+        ("column", "info.root.form == 'top_form'", True, "child_case"),
+        ("column", "info.root.formMeta.level == 0", True, "child_case"),
+        ("column", "info.root.formMeta['is-top-form']", True, "child_case"),
+        ("column", "info.case.form == 'child-case-form'", True, "child_case"),
+        ("column", "info.case == null", True, None),
     ],
 )
 def test_new_jexl_expressions(
     question,
     expr,
     expectation,
-    features,
+    document_owner,
     info,
     form_and_document,
     case_factory,
@@ -225,23 +246,31 @@ def test_new_jexl_expressions(
 
     * form: top_form
        * question: top_question
-       * question: table [enabled by putting 'table' in features param]
+       * question: table
            * row_form: row_form
                * question: column
-       * question: form_question [enabled by putting 'subform' in features param]
+       * question: form_question
            * sub_form: sub_form
                * question: sub_question
     """
 
-    use_table = "table" in features
-    use_subform = "subform" in features
-
     form, document, questions, answers = form_and_document(
-        use_table=use_table, use_subform=use_subform
+        use_table=True, use_subform=True
     )
 
-    main_case = case_factory(document__form__slug="main-case-form")
-    work_item_factory(case=main_case, document=document)
+    if document_owner == "child_case":
+        root_case = case_factory(
+            workflow__slug="main-case-workflow", document__form__slug="main-case-form"
+        )
+        child_case = case_factory(
+            workflow__slug="child-case-workflow",
+            document__form__slug="child-case-form",
+            family=root_case,
+        )
+        work_item_factory(case=root_case, child_case=child_case)
+        work_item_factory(case=child_case, document=document)
+    elif document_owner == "root_case":
+        root_case = case_factory(workflow__slug="main-case-workflow", document=document)
 
     # expression test method: we delete an answer and set it's is_hidden
     # to an expression to be tested. If the expression evaluates to True,