Multi-page Dash Template

This repo contains a basic template for a multi-page Dash application. Each page is contained in a separate Python package to allow for easy extension.

It demonstrates:

1. A Dash application for building interactive chart-based pages;
2. Integration with Bootstrap to improve the page style; and
3. Use of Dash's location component to work with the URL path and parameters.

Installation

To set up and activate a conda environment containing Dash, use:

conda env create -f environment.yml
conda activate dash-template

Run the application locally

Run python main.py to launch the application, then navigate to http://0.0.0.0:8080 to view.

Usage

To use this template as part of a new application you need to:

1. Edit header.py and the index package to customise the homepage;
2. Rename/edit the basic_page package to add layout and callbacks for your own page;
3. Create new packages for each additional page that you need;
4. Edit the pages list in config.json to provide configuration for each page, i.e.
   • The URL path, e.g. page1;
   • The package that contains its layout/callbacks, e.g. basic_page;
   • The name and description to be displayed on the homepage menu;
5. If authentication is required, enable it in config.json and then either:
   • Set an environment variable called VALID_USERS with a JSON dictionary of username/password combinations to be accepted, e.g. {"demo_user": "demo_pass"} or;
   • Implement your own authentication logic in authentication methods: check_cookie should check the session cookie for a logged-in user and return True only if it is valid;
6. Customise style.css with any changes to the page style.

Useful references

1. Plotly Dash Documentation.
2. Bootstrap CSS Documentation.
3. Dash Bootstrap Components.
4. Information on authentication in Flask.