AngularJS - ng-click not working in custom directive - angularjs

Question

I have created a custom directive. The controls defined in templates seem to be working fine. But, I need to append another control - image button, to a control defined in templates according to some condition. To do this I included an IF condition, created an image button and added a 'ng-click' attribute to it. However, using javascript 'append' of image button to my template control's ('html') does not seem to work as it says no 'append' is an undefined function. Hence I used 'concat()', this renders the image button but 'ng-click' does not work. The function in the controller does get hit. Please help!
<div ng-controller="pdfFormsEditController">
<split-pane id="splitPane" height="800">
<split-pane-component id="leftPane" width="50%"> <div class="form-editor boxed-section dashed" id="form">
<form-control ng-repeat="control in formDefinition.Definition.controls" control="control" />
</div></split-pane-component>
</split-pane>
</div>
This is my directive file -
"use strict";
angular.module('configurePDF.directives.noteForms', [])
.directive('formControl', ['$compile', function ($compile) {
var templates = {
"NoteLabel":'<label ng-click="onSelectNoteField(control.Name)" ng-style="control.style" style="font-style:Bold; font-size: 8.25pt; font-family:Arial">{{control.Properties.DisplayName}}</label>',
"NoteMedcinFinding":'<p ng-click="onSelectNoteField(control.Name)" ng-style="control.style"><input type="image" src="../Images/YesNo.gif" style="Width:35px; Height:17px;"><label style="font-style:Bold; font-size: 8.25pt; font-family:Arial">{{control.Properties.OriginalText}}</label></input></p>'
}
var linker = function(scope, element, attrs) {
var location = scope.control.Properties.Location.split(',');
var size=scope.control.Properties.Size.split(',');
// var font=scope.control.Properties.Font.split(',');
scope.control.style = {position: "absolute", left: (parseInt(location[0])*1.5) + "px", top: location[1] + "px" ,minWidth:425+"px",height:size[1]+"px"};
var html = templates[scope.control.Type];
debugger;
if(scope.control.Properties.DetailFormID != "00000000-0000-0000-0000-000000000000"){
var img = document.createElement('input');
img.type = "image"
img.src = "../../Images/plus.png";
img.height = 10;
img.width = 10;
img.style.position = 'absolute'
img.style.left = ((parseInt(location[0])*1.5) - 13) + "px"
img.style.top = (parseInt(location[1]) + 3)+ "px"
//img.className ="ng-scope ng-binding"
//img.onclick = "onSelectNoteField(scope.control.Properties.DetailFormID)"
var attr = document.createAttribute("data-ng-click");
attr.value = "onSelectNoteField(control.Properties.DetailFormID)";
img.attributes.setNamedItem(attr);
debugger;
html = html.concat(img.outerHTML);
//console.log(element);
}
var elem = $compile(html)(scope);
element.replaceWith(elem);
}
return {
restrict: "E",
replace: true,
link: linker,
scope: {
control:'='
}
};
}]);
UPDATE: I read that class="ng-scope ng-binding" should be created automatically in the element's html. But in my image button the class is is just "ng-scope". So, may be there is some binding issue to the scope, because I was not able to append the image button but concatenate it??
<input type="image" src="../../Images/plus.png" height="10" width="10" style="position: absolute; left: 32px; top: 83px;" data-ng-click="onSelectNoteField(control.Properties.DetailFormID)" class="ng-scope">
Controller:
/
.controller('pdfFormsEditController', ['$scope', '$routeParams', 'pdfFormsService','mastersService','$rootScope',
function pdfFormsEditController($scope, $routeParams, pdfFormsService,mastersService,$rootScope) {
var allNoteFields = [];
$scope.editMode = true;
$scope.onSelectNoteField = function(noteField) {
debugger;
$scope.formDefinition = {};
var result = pdfFormsService.getFormDefinition('3151ff0d-6c93-4c80-9182-fd05f7d6cf90');
result.success(function (formDefinition) {
console.log(formDefinition);
$scope.formDefinition = formDefinition;
var size = $scope.formDefinition.Definition.Properties.Size.split(',');
$scope.formDefinition.style = { position: 'relative', width: size[0] + "px", height: size[1] + "px" }
}

Answer 1

Well, I found the answer and its pretty simple! My directive had no access/link to the scope when I was calling onSelectNoteField! Hence a different approach worked.
if ((scope.control.Properties.DetailFormID != "00000000-0000-0000-0000-000000000000") && (scope.control.Properties.DetailFormID != "0") && (scope.control.Properties.DetailFormID !== undefined)) {
var img = document.createElement('input');
img.type = "image";
img.src = "../../Images/plus.png";
img.height = 10;
img.width = 10;
img.style.position = 'absolute'
img.style.left = ((parseInt(location[0]) * 1.5) - 13) + "px"
img.style.top = (parseInt(location[1]) + 3) + "px"
//img.className ="ng-scope ng-binding"
//img.onclick = "onSelectNoteField(scope.control.Properties.DetailFormID)"
var attr = document.createAttribute("data-ng-click");
attr.value = "onImageClick('" + scope.control.Properties.DetailFormID + "')";
img.attributes.setNamedItem(attr);
html = html.concat(img.outerHTML);
}
var elem1 = $compile(html)(scope);
element.replaceWith(elem1);
scope.onImageClick = function (subformID) {
var id = subformID;
scope.onImageClick = function (control) {
var scope = angular.element($("#form")).scope();
scope.onSelectNoteField(id);
}
}
I am creating a scope property- the function onImageClick and calling this in ng-click of my image. onImageClick gets the scope of my parent element, which has access to the function I want to call - onSelectNoteField!