This is part of a series on electrification in New Mexico.

This is part of a series on electrification in New Mexico.

This is part of a series on electrification in New Mexico.

Third part of a series on electrification in New Mexico.

Introduction

One of the most distinguishing features of the coronavirus is that there are a significant number of asymptomatic cases and both pre-symptomatic and asymptomatic individuals appear to be capable of spreading a significant number of cases.  The current best estimate of the percentage of asymptomatic cases is 40% although there is great uncertainty in this value.

This is a demo of a New Mexico Covid model in Python Mesa.  There is not much calibration attempted and there is a lot that could be improved.  But it does start to show the impact of the geography and distribution of population on the spread of the coronavirus within the state of New Mexico.  

A custom contextual filter for Views in Drupal 8 is demonstrated using the Data project. Only a small amount of code is needed for the custom filter.

Set up Drupal

Begin by setting up Drupal and installing the Schema and Data projects.

composer create-project drupal-composer/drupal-project:8.x-dev contextual --no-interaction

Create a database and visit the website to install it. Now install a couple of contributed projects.

The link function l() in Drupal 7 has been replaced in Drupal 8 with an object oriented approach. Adding a query and class to the link is no longer obvious.

Drupal 7

The l() function in Drupal 7 uses the third parameter for adding a query and a class to the link.

GraphQL is well suited for Drupal since Drupal has a data schema that can be mapped to a schema for GraphQL. The GraphQL Drupal contributed project provides this mapping yet it is rapidly changing and has no documentation. Tutorials are quickly out of date. Some of the more recent changes are covered in this article. It expands on the Decoupled Drupal, GraphQL and React article.

Decoupled Drupal is gaining increased interest.  Decoupling refers to using Javascript for the front end of the website and Drupal for the back end content.  Many of the tutorials leave out critical information and even quite recent tutorials are already out of date because the software is changing so quickly.  Developing a production website under these conditions is still risky but has intriguing possibilities.  Javascript avoids page reloads and promises increased speed and separation of the display from the data.  But building a display yourself loses things lik