> Where are people learning these things, and what do we do to teach them better things?
Learn to learn and learn to work carefully. It starts in school and should be part of a proper college/university education or vocational training.
There's several ways of learning the specifics: by experience on-the-job, which can be hard if mistakes can get you fired; or by putting in the work in your free time.
If your job is to work with certain web frameworks and you're not very experienced, either ask senior devs to assist/review before going live with critical changes. Alternatively, practice at home. Unpopular, but you need to get experience from somewhere. OSS projects are a great way to do that - be that by creating your own or by contributing to an existing one.
Learn to learn and learn to work carefully. It starts in school and should be part of a proper college/university education or vocational training.
There's several ways of learning the specifics: by experience on-the-job, which can be hard if mistakes can get you fired; or by putting in the work in your free time.
If your job is to work with certain web frameworks and you're not very experienced, either ask senior devs to assist/review before going live with critical changes. Alternatively, practice at home. Unpopular, but you need to get experience from somewhere. OSS projects are a great way to do that - be that by creating your own or by contributing to an existing one.