libs/web: move ifattr() and attr() helpers into dispatcher scope to make them avilable to all templates, remove duplicate exports in cbi tempalte scope

libs/web/luasrc/cbi.lua

@@ -1325,29 +1325,8 @@ end
 function AbstractValue.render(self, s, scope)
 	if not self.optional or self.section:has_tabs() or self:cfgvalue(s) or self:formcreated(s) then
 		scope = scope or {}
-		scope.section   = s
-		scope.cbid      = self:cbid(s)
-		scope.striptags = luci.util.striptags
-		scope.pcdata	= luci.util.pcdata
-
-		scope.ifattr = function(cond,key,val)
-			if cond then
-				return string.format(
-					' %s="%s"', tostring(key),
-					luci.util.pcdata(tostring( val
-					 or scope[key]
-					 or (type(self[key]) ~= "function" and self[key])
-					 or "" ))
-				)
-			else
-				return ''
-			end
-		end
-
-		scope.attr = function(...)
-			return scope.ifattr( true, ... )
-		end
-
+		scope.section = s
+		scope.cbid    = self:cbid(s)
 		Node.render(self, scope)
 	end
 end

libs/web/luasrc/dispatcher.lua

@@ -281,6 +281,20 @@ function dispatch(request)
 			assert(media, "No valid theme found")
 		end
 
+		local function ifattr(cond, key, val)
+			if cond then
+				local env = getfenv(1)
+				return string.format(
+					' %s="%s"', tostring(key),
+					luci.util.pcdata(tostring( val
+					 or (type(env[key]) ~= "function" and env[key])
+					 or "" ))
+				)
+			else
+				return ''
+			end
+		end
+
 		tpl.context.viewns = setmetatable({
 		   write       = luci.http.write;
 		   include     = function(name) tpl.Template(name):render(getfenv(2)) end;
@@ -290,7 +304,9 @@ function dispatch(request)
 		   pcdata      = util.pcdata;
 		   media       = media;
 		   theme       = fs.basename(media);
-		   resource    = luci.config.main.resourcebase
+		   resource    = luci.config.main.resourcebase;
+		   ifattr      = ifattr;
+		   attr        = function(...) return ifattr(true, ...) end
 		}, {__index=function(table, key)
 			if key == "controller" then
 				return build_url()