October 2008
Intermediate to advanced
832 pages
25h 20m
German
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17.10 Tabellen mit IRRE über mehrere Ebenen verschachteln
Problem
Sie haben bereits erste Erfahrungen mit dem Prinzip des Inline Relational Record Editing – kurz IRRE – gemacht und dabei festgestellt, dass Ihnen eine inline-Verknüpfung allein nicht ausreicht, weil Ihre Datensätze über mehrere Tabellen und Ebenen miteinander verbunden sind.
Sie wollen daher mehrere IRRE-Formulare ineinander verschachteln, um einen Hauptdatensatz und möglichst viele dazugehörige Datensätze gleichzeitig in einem Backend-Formular zu editieren.
Lösung
Genau genommen, gibt es zwei Lösungen für dieses Problem, von denen eine relativ einfach ist:
Ohne Intermediate-Tabellen
Falls Sie IRRE ohne Intermediate-Tabellen nutzen, verwenden Sie einfach in jeder Tabelle, die Sie verknüpfen ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.