X-Git-Url: https://git.hcoop.net/clinton/lisp-on-lines.git/blobdiff_plain/835ac88dcdbdb3389dd922748d31546875b1599a..da26d00333fa0ced964dc777a00bd917c543e4ed:/src/meta-model.lisp

diff --git a/src/meta-model.lisp b/src/meta-model.lisp
index 2fbe4b5..09f7f6f 100644
--- a/src/meta-model.lisp
+++ b/src/meta-model.lisp
@@ -22,6 +22,9 @@
 (defmethod meta-model.metadata ((self (eql nil)))
   nil)
 
+(defmethod meta-model.metadata ((self symbol))
+  (meta-model.metadata (make-instance self)))
+
 (defun gen-supers (supers)
   (let (subclassp)
     (dolist (x supers)
@@ -99,7 +102,7 @@ most of the below functions expect this method to exist"
 	      (list-item-helper
 	       type view
 	       :ret-fun #'rfun)))
-    (append (lister :key) (lister :base))))
+    (append (lister :key) (lister :base) (lister nil))))
 			 
 (defmethod slot-type ((view t) slot)
   "returns the CLSQL type of SLOT"
@@ -153,14 +156,23 @@ most of the below functions expect this method to exist"
 		 :test-key :target-slot
 		 :return-full t)))
 
-(defmethod explode-foreign-key ((model clsql:standard-db-object) slot)
+(defmethod explode-foreign-key ((model clsql:standard-db-object) slot &key (createp t))
   "returns the clsql view-class joined on SLOT"
   (dolist (s (list-join-attributes model))
     (when (equal (getf (cdr s) :home-key) slot)
-      (let ((val (slot-value model (car s))))
-      (return-from explode-foreign-key 
-	(values (if val val (make-instance (getf (cdr s) :join-class))) 
-		(getf (cdr s) :foreign-key)))))))
+      (let* ((fkey (getf (cdr s) :foreign-key))
+	     (new (sync-instance (make-instance (getf (cdr s) :join-class))))
+	     (val (or (slot-value model (car s))
+		      (progn
+			(when createp
+			  (setf
+			   (slot-value model slot)
+			   (slot-value new fkey))
+			  (sync-instance model)
+			  (slot-value model (car s)))))))
+	    
+	(return-from explode-foreign-key 
+	  (values val fkey))))))
 
 (defun find-join-helper (foreign-key)
   (lambda (class slot) 
@@ -212,14 +224,18 @@ most of the below functions expect this method to exist"
 (defgeneric select-instances (instance &rest args)
   (:documentation "Select instances in backend dependent way"))
 
+(defgeneric prepare-slot-name-for-select (instance slot-name)
+  (:method (i s) s))
+
 (defmacro def-compare-expr (instance-type name expr &key value-format)
   `(defmethod ,name ((instance ,instance-type) slot-name value)
      (declare (ignore instance))
-     (,expr slot-name ,(typecase value-format
+     (,expr (prepare-slot-name-for-select instance slot-name) ,(typecase value-format
                                  (null 'value)
                                  (string `(format nil ,value-format value))
                                  (t `(,value-format value))))))
 
+
 (defmacro def-logical-expr (instance-type name expr)
   `(defmethod ,name ((instance ,instance-type) &rest args)
      (declare (ignore instance))