javascript - Cross referencing of 2 models -

i have 2 models cross referencing each other. this:

mainmodel:

define(     [ 'durandal/app', 'durandal/plugins/router', 'models/shell', 'models/editmodel' ],     function (app, router, shell, editmodel) {         //...         return {             //...              // function should accessible editmodel              update: function() {                 //...             },              showeditview: function() {                 // initialise editmodel data , show according view afterwards                 editmodel.init('set important stuff here...');                 router.navigateto('#/editview');             }             //...         };     } ); 

editmodel:

define(     [ 'durandal/app', 'durandal/plugins/router', 'models/shell', 'models/mainmodel' ],     function (app, router, shell, mainmodel) {         //...         return {             //...              // function should accessible mainmodel              init: function() {                 //...             },              showmainview: function() {                 // update the mainmodel data , show according view afterwards                 mainmodel.update('set new data here...');                 router.navigateto('#/mainview');             }             //...         };     } ); 

unfortunately not working. if load page on mainview , call showeditview, variable editview known , works fine variable mainmodel in editmodel undefined , therefore call mainmodel.update(...) fails. same thing happens if load page on editview in "opposite direction" (var mainmodel in editmodel known, editmodel in mainmodel undefined).

is known issue , if so: how can circumvent it?

i posted question in durandals google group

thanks

check requierejs documentation circular dependencies http://requirejs.org/docs/api.html#circular.

circular dependencies rare, , sign might want rethink design. however, needed, , in case, use require() specified above.

for main.js add require dependency , explicitly require models/editmodel should trick. either replicate other modules or rethink design ;-).

define(     [ 'require', 'durandal/app', 'durandal/plugins/router', 'models/shell', 'models/editmodel' ],     function (require, app, router, shell, editmodel) {         //...         return {             //...              // function should accessible editmodel              update: function() {                 //...             },              showeditview: function() {                 // initialise editmodel data , show according view afterwards                 require('models/editmodel').init('set important stuff here...');                 router.navigateto('#/editview');             }             //...         };     } );