angular formly - [fromly]: pass controller to template -

i'm trying make form button inside js, because formly directive rendered form isn't correct. decided push button , render button template button has lost access controller , validation form. have missed here?

controller.js

.controller('x', ['$log', 'api', function($log, api) {   var _self = this;    _self.model = {};   _self.formparts = [{     classname: 'row',     fieldgroup: [       {         classname: 'col-xs-3',         key: 'q',         type: 'select',         templateoptions: {           required: true,           valueprop: "id",           labelprop: "name",           options: [             {name: '0', id: 0},             {name: '1', id: 1},           ],         }       },       {         classname: 'col-xs-7',         key: 'n',         type: 'input',         templateoptions: {           required: true,           type: 'text',           placeholder: 'name'         }       }       {         classname: 'col-xs-2',         templateurl: 'button.html'       }     ]   }];   _self.save(model) {     $log.info(model);   }; }]); 

main.html

<formly-form model="f.model"              fields="f.formfields"              form="formform"> </formly-form> 

button.html

<button type="submit" class="btn btn-success"         ng-disabled="formform.$invalid"         ng-click="f.save(f.model)">save </button>