Add unminified components bundle support.

.pylintrc

@@ -56,7 +56,8 @@ confidence=
 # --disable=W"
 disable=fixme,
         missing-docstring,
-        invalid-name
+        invalid-name,
+        too-many-lines
 # Enable the message, report, category or checker with the given id(s). You can
 # either give multiple identifier separated by comma (,) or put this option
 # multiple time (only on the command line, not in the configuration file where

.pylintrc37

@@ -145,7 +145,8 @@ disable=invalid-name,
         comprehension-escape,
         no-else-return,
         useless-object-inheritance,
-        possibly-unused-variable
+        possibly-unused-variable,
+        too-many-lines
 
 # Enable the message, report, category or checker with the given id(s). You can
 # either give multiple identifier separated by comma (,) or put this option

CHANGELOG.md

@@ -1,3 +1,10 @@
+## 0.27.0 - 2018-09-20
+## Added
+- Added support for serving dev bundles from the components suite, enable with `app.run_server(dev_tools_serve_dev_bundles=True)` [#369](https://github.com/plotly/dash/pull/369)
+
+## Fixed
+- Use HTML5 syntax for the meta tag [#350](https://github.com/plotly/dash/pull/350)
+
 ## 0.26.6 - 2018-09-19
 ## Fixed
 - Added `Cache-Control` headers to files served by `Dash.serve_component_suites`. [#387](https://github.com/plotly/dash/pull/387)

dash/_configs.py

@@ -19,18 +19,21 @@ def env_configs():
         'DASH_SUPPRESS_CALLBACK_EXCEPTIONS',
         'DASH_ASSETS_EXTERNAL_PATH',
         'DASH_INCLUDE_ASSETS_FILES',
-        'DASH_COMPONENTS_CACHE_MAX_AGE'
+        'DASH_COMPONENTS_CACHE_MAX_AGE',
+        'DASH_INCLUDE_ASSETS_FILES',
+        'DASH_SERVE_DEV_BUNDLES',
+        'DASH_DEBUG'
     )})
 
 
-def get_config(config_name, init, env, default=None):
+def get_config(config_name, init, env, default=None, is_bool=False):
     if init is not None:
         return init
 
     env_value = env.get('DASH_{}'.format(config_name.upper()))
     if env_value is None:
         return default
-    return env_value
+    return env_value if not is_bool else env_value.lower() == 'true'
 
 
 def pathname_configs(url_base_pathname=None,

dash/dash.py

@@ -221,6 +221,9 @@ def add_url(name, view_func, methods=('GET',)):
         self._layout = None
         self._cached_layout = None
         self.routes = []
+        self._dev_tools = _AttributeDict({
+            'serve_dev_bundles': False
+        })
 
         # add a handler for components suites errors to return 404
         self.server.errorhandler(exceptions.InvalidResourceError)(
@@ -373,11 +376,14 @@ 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._dev_tools.serve_dev_bundles
             )) + self._external_scripts + self._collect_and_register_resources(
-                self.scripts.get_all_scripts() +
+                self.scripts.get_all_scripts(
+                    dev_bundles=self._dev_tools.serve_dev_bundles) +
                 self.scripts._resources._filter_resources(
-                    dash_renderer._js_dist
+                    dash_renderer._js_dist,
+                    dev_bundles=self._dev_tools.serve_dev_bundles
                 ))
 
         return '\n'.join([
@@ -541,7 +547,7 @@ def dependencies(self):
                 'inputs': v['inputs'],
                 'state': v['state'],
                 'events': v['events']
-            } for k, v in list(self.callback_map.items())
+            } for k, v in self.callback_map.items()
         ])
 
     # pylint: disable=unused-argument, no-self-use
@@ -979,8 +985,49 @@ def get_asset_url(self, path):
 
         return asset
 
+    def enable_dev_tools(self,
+                         debug=False,
+                         dev_tools_serve_dev_bundles=None):
+        """
+        Activate the dev tools, called by `run_server`. If your application is
+        served by wsgi and you want to activate the dev tools, you can call
+        this method out of `__main__`.
+
+        :param debug: If True, then activate all the tools unless specified.
+        :type debug: bool
+        :param dev_tools_serve_dev_bundles: Serve the dev bundles.
+        :type dev_tools_serve_dev_bundles: bool
+        :return:
+        """
+        env = _configs.env_configs()
+        debug = debug or _configs.get_config('debug', None, env, debug,
+                                             is_bool=True)
+
+        self._dev_tools['serve_dev_bundles'] = _configs.get_config(
+            'serve_dev_bundles', dev_tools_serve_dev_bundles, env,
+            default=debug,
+            is_bool=True
+        )
+        return debug
+
     def run_server(self,
                    port=8050,
                    debug=False,
+                   dev_tools_serve_dev_bundles=None,
                    **flask_run_options):
-        self.server.run(port=port, debug=debug, **flask_run_options)
+        """
+        Start the flask server in local mode, you should not run this on a
+        production server and use gunicorn/waitress instead.
+
+        :param port: Port the application
+        :type port: int
+        :param debug: Set the debug mode of flask and enable the dev tools.
+        :type debug: bool
+        :param dev_tools_serve_dev_bundles: Serve the dev bundles of components
+        :type dev_tools_serve_dev_bundles: bool
+        :param flask_run_options: Given to `Flask.run`
+        :return:
+        """
+        debug = self.enable_dev_tools(debug, dev_tools_serve_dev_bundles)
+        self.server.run(port=port, debug=debug,
+                        **flask_run_options)

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()

dash/version.py

@@ -1 +1 @@
-__version__ = '0.26.6'
+__version__ = '0.27.0'