PRO: Data-Usage
When you have access to the data you can work with it. For that we need data in the JSON-Format.
JSON or an other Format?
Usually this is the case. But sometimes the API gives not JSON but Text, CSV, XML, binary-data for images etc.
If Text, XML, CSV… check the Shortcode-Options for inputtype. If something else comes along see there for displayapireturn=NUMBER
twig-template in JCI Template
The JCI Template has a field for the Twig-Syntax for the Template using the JSON
This twig-Code is used on the JSON for calculating the result.
twig-Basics
The basic syntax of twig is documented at https://twig.symfony.com/doc/3.x/templates.html
For backward compatibility twig-versions 1, 2.4.3, 3, 3.3.2 are part of the JCI PRO Plugin.
And also a JCI-optimized JCI-twig 3.3.2. Use this to avoid comptibility problems with other plugins also using twig.
If you think about switching from twig 1 or twig 2 to twig 3 test your twig-code, as there are some changes from verson 2 to 3.
twig-Examples
At http://api.json-content-importer.com/twig-programming-examples/ you find many examples shoing how twig & JSON work together.