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CouchDB kurz & gut
book

CouchDB kurz & gut

by Mario Scheliga
May 2012
Intermediate to advanced
200 pages
3h 39m
German
O'Reilly Verlag
Content preview from CouchDB kurz & gut

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Für das Anzeigen des Dokuments in einer bestimmten Form bietet sich eine Show-Funktion an. Wie der Name schon verrät, sind diese Funktionen für das Darstellen von Dokumenten gedacht. Sie können weder andere Dokumente in dieser Funktion laden, noch können Sie irgendwelche Änderungen am Dokument oder an der Datenbank vornehmen. Im Gegenzug sind Show-Funktionen frei von Nebenwirkungen, und die bekannten HTTP-Mechanismen zur Steigerung der Performance (Caching, Loadbalancing etc.) können angewandt werden. Wir verwenden diese Funktion also nur für das »Rendern« unseres Dokuments. Dafür legen wir im Verzeichnis shows die Datei edit.js an.

function(doc, req) { // !json templates.edit // !code vendor/couchapp/path.js // !code vendor/couchapp/template.js ...
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