feat(variables): Support `to_object`. (#6572)

api/core/app/segments/segments.py

@@ -33,6 +33,15 @@ class Segment(BaseModel):
     def markdown(self) -> str:
         return str(self.value)
 
+    def to_object(self) -> Any:
+        if isinstance(self.value, Segment):
+            return self.value.to_object()
+        if isinstance(self.value, list):
+            return [v.to_object() for v in self.value]
+        if isinstance(self.value, dict):
+            return {k: v.to_object() for k, v in self.value.items()}
+        return self.value
+
 
 class StringSegment(Segment):
     value_type: SegmentType = SegmentType.STRING

api/core/workflow/entities/variable_pool.py

@@ -4,7 +4,7 @@ from typing import Any, Union
 
 from typing_extensions import deprecated
 
-from core.app.segments import ArrayVariable, ObjectVariable, Variable, factory
+from core.app.segments import Variable, factory
 from core.file.file_obj import FileVar
 from core.workflow.entities.node_entities import SystemVariable
 
@@ -113,14 +113,7 @@ class VariablePool:
             raise ValueError('Invalid selector')
         hash_key = hash(tuple(selector[1:]))
         value = self._variable_dictionary[selector[0]].get(hash_key)
-
-        if value is None:
-            return value
-        if isinstance(value, ArrayVariable):
-            return [element.value for element in value.value]
-        if isinstance(value, ObjectVariable):
-            return {k: v.value for k, v in value.value.items()}
-        return value.value if value else None
+        return value.to_object() if value else None
 
     def remove(self, selector: Sequence[str], /):
         """

api/tests/unit_tests/app/test_variables.py

@@ -9,6 +9,7 @@ from core.app.segments import (
     StringVariable,
     factory,
 )
+from core.app.segments.variables import ArrayVariable, ObjectVariable
 
 
 def test_string_variable():
@@ -89,3 +90,47 @@ def test_build_a_blank_string():
     )
     assert isinstance(result, StringVariable)
     assert result.value == ''
+
+
+def test_object_variable_to_object():
+    var = ObjectVariable(
+        name='object',
+        value={
+            'key1': ObjectVariable(
+                name='object',
+                value={
+                    'key2': StringVariable(name='key2', value='value2'),
+                },
+            ),
+            'key2': ArrayVariable(
+                name='array',
+                value=[
+                    StringVariable(name='key5_1', value='value5_1'),
+                    IntegerVariable(name='key5_2', value=42),
+                    ObjectVariable(name='key5_3', value={}),
+                ],
+            ),
+        },
+    )
+
+    assert var.to_object() == {
+        'key1': {
+            'key2': 'value2',
+        },
+        'key2': [
+            'value5_1',
+            42,
+            {},
+        ],
+    }
+
+
+def test_variable_to_object():
+    var = StringVariable(name='text', value='text')
+    assert var.to_object() == 'text'
+    var = IntegerVariable(name='integer', value=42)
+    assert var.to_object() == 42
+    var = FloatVariable(name='float', value=3.14)
+    assert var.to_object() == 3.14
+    var = SecretVariable(name='secret', value='secret_value')
+    assert var.to_object() == 'secret_value'