Restructured app for multiview, first working callback

stats/index.py

@@ -0,0 +1,30 @@
+from dash import html, dcc
+import plotly.io as pio
+from os import getenv
+from app import app
+from dash.dependencies import Input, Output
+from views import siret
+
+pio.templates.default = "none"
+
+
+app.layout = html.Div([
+    dcc.Location(id='url', refresh=False),
+    html.Div(id='page-content')
+])
+
+
+@app.callback(Output('page-content', 'children'),
+              Input('url', 'pathname'))
+def display_page(pathname):
+    if pathname.startswith('/siret/'):
+        return siret.layout
+    else:
+        return '404'
+
+
+if __name__ == '__main__':
+    port = getenv('PORT', 8050)
+
+    # Scalingo requires 0.0.0.0 as host, instead of the default 127.0.0.1
+    app.run_server(debug=True, host='0.0.0.0', port=int(port))