refactor: move graphql slot interpolation to rasa

Author: kenrilea

rasa/core/nlg/interpolator.py

@@ -62,6 +62,8 @@ def interpolate(
     """
     if isinstance(template, str):
         return interpolate_text(template, values)
+    elif isinstance(template, list):
+        [interpolate(i, values) for i in template]
     elif isinstance(template, dict):
         for k, v in template.items():
             if isinstance(v, dict):

rasa_addons/core/nlg/bftemplate.py

@@ -134,7 +134,7 @@ def _fill_template(
             "text",
             "image",
             "custom",
-            "button",
+            "buttons",
             "attachment",
             "quick_replies",
         ]

rasa_addons/core/nlg/graphql.py

@@ -7,6 +7,7 @@
 from rasa.utils.endpoints import EndpointConfig
 import os
 import urllib.error
+from rasa.core.nlg.interpolator import interpolate
 
 logger = logging.getLogger(__name__)
 
@@ -172,6 +173,18 @@ async def generate(
                 metadata = response.pop("metadata", {}) or {}
                 for key in metadata:
                     response[key] = metadata[key]
+
+                keys_to_interpolate = [
+                    "text",
+                    "image",
+                    "custom",
+                    "buttons",
+                    "attachment",
+                    "quick_replies",
+                ]
+                for key in keys_to_interpolate:
+                    if key in response:
+                        response[key] = interpolate(response[key], tracker.current_slot_values())
             else:
                 response = await self.nlg_endpoint.request(
                     method="post", json=body, timeout=DEFAULT_REQUEST_TIMEOUT