Add dev_bundle resources support.

Author: T4rk1n

dash/dash.py

@@ -86,6 +86,7 @@ def __init__(
             external_scripts=None,
             external_stylesheets=None,
             suppress_callback_exceptions=None,
+            serve_dev_bundles=False,
             **kwargs):
 
         # pylint-disable: too-many-instance-attributes
@@ -216,6 +217,7 @@ def add_url(name, view_func, methods=('GET',)):
         self._layout = None
         self._cached_layout = None
         self.routes = []
+        self._serve_dev_bundle = serve_dev_bundles
 
     @property
     def layout(self):
@@ -357,11 +359,14 @@ def _generate_scripts_html(self):
         # pylint: disable=protected-access
         srcs = self._collect_and_register_resources(
             self.scripts._resources._filter_resources(
-                dash_renderer._js_dist_dependencies
+                dash_renderer._js_dist_dependencies,
+                dev_bundles=self._serve_dev_bundle
             )) + self._external_scripts + self._collect_and_register_resources(
-                self.scripts.get_all_scripts() +
+                self.scripts.get_all_scripts(
+                    dev_bundles=self._serve_dev_bundle) +
                 self.scripts._resources._filter_resources(
-                    dash_renderer._js_dist
+                    dash_renderer._js_dist,
+                    dev_bundles=self._serve_dev_bundle
                 ))
 
         return '\n'.join([

dash/resources.py

@@ -16,14 +16,18 @@ def __init__(self, resource_name, layout):
     def append_resource(self, resource):
         self._resources.append(resource)
 
-    def _filter_resources(self, all_resources):
+    def _filter_resources(self, all_resources, dev_bundles=False):
         filtered_resources = []
         for s in all_resources:
             filtered_resource = {}
             if 'namespace' in s:
                 filtered_resource['namespace'] = s['namespace']
             if 'external_url' in s and not self.config.serve_locally:
                 filtered_resource['external_url'] = s['external_url']
+            elif 'dev_package_path' in s and dev_bundles:
+                filtered_resource['relative_package_path'] = (
+                    s['dev_package_path']
+                )
             elif 'relative_package_path' in s:
                 filtered_resource['relative_package_path'] = (
                     s['relative_package_path']
@@ -54,7 +58,7 @@ def _filter_resources(self, all_resources):
 
         return filtered_resources
 
-    def get_all_resources(self):
+    def get_all_resources(self, dev_bundles=False):
         all_resources = []
         if self.config.infer_from_layout:
             all_resources = (
@@ -63,7 +67,7 @@ def get_all_resources(self):
         else:
             all_resources = self._resources
 
-        return self._filter_resources(all_resources)
+        return self._filter_resources(all_resources, dev_bundles)
 
     def get_inferred_resources(self):
         namespaces = []
@@ -127,8 +131,8 @@ def _update_layout(self, layout):
     def append_script(self, script):
         self._resources.append_resource(script)
 
-    def get_all_scripts(self):
-        return self._resources.get_all_resources()
+    def get_all_scripts(self, dev_bundles=False):
+        return self._resources.get_all_resources(dev_bundles)
 
     def get_inferred_scripts(self):
         return self._resources.get_inferred_resources()