add integer-to-checkbox djula-filter (view.lisp).

src/view.lisp

@@ -49,3 +49,16 @@
    :url-for))
 
 (setf djula:*djula-execute-package* (find-package :ritherdon-archive.djula))
+
+;; Custom filters and template code added below...
+;; =============================================================================
+
+;; This filter is for converting Integers used to store Boolean values
+;; in a SQLite database. The intended place you will use this filter
+;; is in the /software section. The most notable parts being the /add
+;; and /edit sections. In the SQLite database, I have set:
+;; - 0 => false
+;; - 1 => true.
+;; In this case, if the `VALUE' is not 1, it is always false (I.E. 0).
+(djula::def-filter :integer-to-checkbox (value)
+  (format nil "~S" (if (= 1 value) "on" "off")))