-[% MACRO maybe_link_view(object) BLOCK;
+[%#
+
+=head1 MACROS
+
+These are some default macros which are used by various templates in the
+system.
+
+=head2 link
+
+This creates an <A HREF="... to a command in the Apache::MVC system by
+catenating the base URL, table, command, and any arguments.
+
+#%]
+[%
+MACRO link(table, command, additional, label) BLOCK;
+ '<A HREF="' _ base _ table _ "/" _ command _ "/" _ additional _ '">';
+ label;
+ "</A>";
+END;
+%]
+
+[%#
+
+=head2 maybe_link_view
+
+C<maybe_link_view> takes something returned from the database - either
+some ordinary data, or an object in a related class expanded by a
+has-a relationship. If it is an object, it constructs a link to the view
+command for that object. Otherwise, it just displays the data.
+
+#%]
+
+[%
+
+MACRO maybe_link_view(object) BLOCK;
IF object.moniker; # It's an object, i.e. a has-a
- "<A HREF='" _ base _ object.moniker _ "/view/" _ object.id _"'>";
- object;
- "</A>";
+ link(object.moniker, "view", object.id, object);
ELSE;
object;
END;
END;
%]
+[%#
+
+=head2 display_line
+
+C<display_line> is used in the list template to display a row from the
+database, by iterating over the columns and displaying the data for each
+column. It misses out the C<id> column by default, and magically
+URLifies columns called C<url>. This may be considered too much magic
+for some.
+
+#%]
[% MACRO display_line(item) BLOCK;
FOR col = classmetadata.columns;
NEXT IF col == "id";
"<td>";
- IF col == "url"; # Possibly too much magic.
+ IF col == "url";
"<A HREF="; item.url; "> "; item.url; "</A>";
+ ELSIF col == item.stringify_column;
+ maybe_link_view(item);
ELSE;
maybe_link_view(item.$col);
END;
button(item, "edit");
button(item, "delete");
END %]
+[%#
+
+=head2 button
+
+This is a generic button, which performs an action on an object.
+=cut
+
+#%]
[% MACRO button(obj, action) BLOCK; %]
<TD>
<FORM METHOD="post" ACTION="[%base%]/[%obj.moniker%]/[%action%]/[%obj.id%]">
</FORM>
</TD>
[% END %]
+[%#
+
+=head2 view_related
+
+This takes an object, and looks up the C<related_accessors>; this should
+give a list of accessors that can be called to get a list of related
+objects. It then displays a title for that accessor, (i.e. "Beers" for a
+brewery) calls the accesor, and displays a list of the results.
+
+=cut
+#%]
+[%
+MACRO view_related(object) BLOCK;
+ FOR accessor = classmetadata.related_accessors.list;
+ "<H3>"; accessor | ucfirst; "</H3>\n";
+ "<UL id=\"vlist\">";
+ FOR thing = object.$accessor;
+ "<LI>"; maybe_link_view(thing); "</LI>\n";
+ END;
+ "</UL>";
+ END;
+END;
+
+MACRO test_xxxx(myblock) BLOCK;
+ FOR col = classmetadata.columns;
+ NEXT IF col == "id";
+ myblock;
+ END;
+END;
+%]