I would like to create a D8 module which will display a list of a given ContentType based on a filter method. Some of the filter elements are dependent on others. For example, talking about cars, if one selects the make Honda, he expects to find within Models <Civic, Jazz, CR-V etc> but not <A1, A2, A3, A4, A6> which corresponds to Audi make.
This is the main point of my question: how to create these dependent filter elements (for example all make and dependent models for cars) ?
Developing a new school site using Drupal 9 and have been asked to secure a portion of the site to login only access. Since Drupal is not using folder structure, how to secure certain nodes to password only. Some modules available are not for D9 and not functional. Idea would be to have a "Faculty Section" password only using our university AD id/passwords to gain access. Any suggestions?