X-Git-Url: https://git.hcoop.net/clinton/lisp-on-lines.git/blobdiff_plain/480a7191a8d9c713401c7634d4ffbd9b55c6ed9c..e1645f63189477f1b39a173a41fcbbfefb5e88a6:/src/slot-presentations.lisp

diff --git a/src/slot-presentations.lisp b/src/slot-presentations.lisp
index 667e987..2f75737 100644
--- a/src/slot-presentations.lisp
+++ b/src/slot-presentations.lisp
@@ -217,11 +217,10 @@ Calendar.setup({
   ;; the viewed instance could have been changed/deleted, so we sync this instance
   (meta-model:sync-instance (instance (ucw::parent self))))
 
-
 (defmethod  present-slot :around ((slot foreign-key-slot-presentation) instance)  
   (setf (foreign-instance slot) 
 	(when (lol::presentation-slot-value slot instance) 
-	  (meta-model:explode-foreign-key instance (slot-name slot))))
+	  (meta-model:explode-foreign-key instance (slot-name slot) :nilp t)))
   (flet ((render () (when (foreign-instance slot)(call-next-method))))
     (if (slot-boundp slot 'ucw::place)
         (cond 
@@ -394,7 +393,9 @@ Calendar.setup({
   ((list-view :accessor list-view :initarg :list-view :initform :one-line)
    (action-view :accessor action-view :initarg :action-view :initform :viewer)
    (create-view :initform :creator)
-   (select-view :initform :as-string :accessor select-view))
+   (select-view :initform :as-string :accessor select-view)
+   (can-add-new-p :initarg :can-add-new-p :accessor can-add-new-p :initform t)
+   (can-add-existing-p :initarg :can-add-existing-p :accessor can-add-existing-p :initform t))
   (:type-name many-to-many)
   (:default-initargs :label "many to many"))
 
@@ -430,16 +431,19 @@ Calendar.setup({
   (let ((instances (slot-value instance (slot-name slot)))
 	new-instance)
     (<:ul
-     (<:li (<ucw:submit :action (add-to-many-to-many slot instance)
+     (when (can-add-new-p slot)
+       (<:li 
+	(<ucw:submit :action (add-to-many-to-many slot instance)
 			
-			 :value "Add New"))
-     (<:li  (<ucw:submit :action (add-to-many-to-many slot instance new-instance)
-			 :value "Add:")
-	    (<ucw:select :accessor new-instance
-			 (arnesi:dolist* (i (find-all-instances slot instance))
-			   (<ucw:option
-			    :value i
-			    (lol:present-view (i (select-view slot) slot))))))
+		     :value "Add New")))
+     (when (can-add-existing-p slot )
+       (<:li  (<ucw:submit :action (add-to-many-to-many slot instance new-instance)
+			   :value "Add:")
+	      (<ucw:select :accessor new-instance
+			   (arnesi:dolist* (i (find-all-instances slot instance))
+			     (<ucw:option
+			      :value i
+			      (lol:present-view (i (select-view slot) slot)))))))
      (dolist* (i instances)
        (<:li
 	(<ucw:a :action (call-view ((car i) (action-view slot) (ucw::parent slot)))