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Table of Contents
New Developers Working Group
The Landscape of Evergreen
Coming Soon - Introduction to the components
Development Environment and Tools
Git: Git is a software version control system designed to track software code changes. Evergreen's code changes are tracked at https://git.evergreen-ils.org/. Git is almost always used from a command line interface, but there is a free 'Git for Windows' application that offers basic functionality (https://git-scm.com/download/win).
Text Editor: Any plain text editor can be used. Notepad++ (available from https://notepad-plus-plus.org/) is a simple open-source code editor. Visual Studio Code Editor is free code editor available from Microsoft (https://code.visualstudio.com/) that has the advantage of a built-in console so that you can update and compile code, plus view console output when testing the code, in the same window.
Scripting and Markup Languages Used in Evergreen
Angular: Angular is the JavaScript framework that new Evergreen development uses for the web client. It supercedes AngularJS and uses TypeScript. See: https://angular.io/
AngularJS: AngularJS (aka Angular 1) was the precursor to Angular. It was also JavaScript framework, but the developers of the AngularJS framework decided to rework it to use TypeScript, so pages that were coded in AngularJS are decidedly different than pages coded in Angular even though they are both descended from JavaScript.
CSS: Cascading Style Sheets are used in the OPAC
Perl: Much of the core business logic underlying Evergreen is built in Perl. If you are editing Perl files directly on the server, they are located under: usr/local/share/perl/[version number]/openils/www. If you are making changes to package into a Git branch, the files are located under: \Open-ILS\src\perlmods\lib\OpenILS\WWW\.
Perl Template Toolkit: Most of the OPAC and current staff client pages are built in Perl Template Toolkit (TT2), which blends HTML and CSS with some simple Perl code to create the web pages. See: http://www.template-toolkit.org/. If you are editing TT2 files directly on the server, they are located under: /openils/var/templates/. If you are making changes to package into a Git branch, they are under: \Open-ILS\src\templates\.
PostgreSQL: Evergreen uses the open-source PostgreSQL database. See: https://www.postgresql.org/
TypeScript: TypeScript is a superset of JavaScript that gets compiled into standard JavaScript. See: https://www.typescriptlang.org/