I have angularjs template as a string including "ng-repeat" and other directives. I want to compile it in the controller to produce the result HTML as string.
Example on what I want to apply in Angular:
Input:
-------
var template = '<div ng-repeat="item in items">{{item.data}}</div>';
Output:
--------
var result = '<div>1</div><div>2</div><div>3</div><div>4</div>';
I want this to be done in the controller I've and I tried the following:
var template = '<div ng-repeat="item in items">{{item.data}}</div>';
var linkFunction = $compile(template);
var result = linkFunction($scope);
console.log(result); // prints the template itself!
Thanks!
Give this a whirl:
var template = angular.element('<div ng-repeat="item in items">{{item.data}}</div>');
var linkFunction = $compile(template);
var result = linkFunction($scope);
$scope.$apply();
console.log(template.html());
For this purpose I made myself a directive couple of projects ago:
angular.module('myApp')
.directive('ngHtmlCompile', ["$compile", function ($compile) {
return {
restrict: 'A',
link: function (scope, element, attrs) {
scope.$watch(attrs.ngHtmlCompile, function (newValue, oldValue) {
element.html(newValue);
$compile(element.contents())(scope);
});
}
}
}]);
and then for example:
<div ng-html-compile='<div ng-repeat="item in items">{{item.data}}</div>'></div>
or even the string can be dynamic:
<div ng-repeat="item in items" ng-html-compile="item.template">
</div>
Related
My Question is similar to this link.
I want '%' symbol for view only, it should not effect to ngmodel.How can I format this.
I have a text box which will have percentage value, there is a calculation based on that value.So I want to display '%' for view only and ngmodel contrains only value. How can I.
you can use custom filter for percentage value
angular.module('percentageValueFilter', [])
.filter( 'titlecase', function() {
return function(input) {
if(isNaN(input)
return input;
else
return input + "%";
}
});
use this filter as shown below example in your html
{{ yourVale | percentageValueFilter }}
{{ 10 | percentageValueFilter }} // 10%
{{ 'test' | percentageValueFilter }} // test
You can try the following code:
var myApp = angular.module('myApp', []);
myApp.controller('myController', ['$scope', function($scope){
$scope.testNumber = {number:30};
}]);
myApp.directive('myDirective', function() {
return {
require: 'ngModel',
link: function(scope, element, attrs, ngModelController) {
ngModelController.$parsers.push(function(data) {
//convert data from view format to model format
return data.replace('%','');
});
ngModelController.$formatters.push(function(data) {
//convert data from model format to view format
return data+'%';
});
}
}
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myApp" ng-controller="myController">
<input my-directive type="text" data-ng-model="testNumber.number" /> <br/>
ng-model value: {{testNumber.number}}
</div>
You can create a directive that require ngModel and add a formatter.
angular.module('formatter').directive('percentageFormatter', () => {
return {
require: 'ngModel',
link: (scope, el, attrs, ngModel) => {
ngModel.$formatters.push(value => `${value} %`);
}
}
});
When you require the ngModelController you have to add it to the input element. It is important to give it a name too.
I'm trying to dynamically add directive names to my directive from a json object. Angular however is only interpolating the directive name which is pulled from a JSON tree once, Angular is then not recognizing and compiling the dynamic children directives once the name is interpolated.
I have tried adding the interpolate service to my DDO so that I can manually interpolate the JSON values, and then have Angular compile.
I however get undefined for $interpolate(tAttrs.$attr.layout) I'm passing the json object to my isolated scope as layout, when I try to access the attr layout I get undefined. My question is how can I access layout object values in the pre link or before compile so that I can interpolate the values and inject them in.
Or do I need to have angular recompile as described here: How do I pass multiple attributes into an Angular.js attribute directive?
Any help would be great.
{
"containers": [
{
"fluid": true,
"rows": [
{
"columns": [
{
"class": "col-md-12",
"directive": "blog"
}
]
},
{
"columns": [
{
"class": "col-md-6 col-md-offset-3 col-xs-10 col-xs-offset-1",
"directive": "tire-finder"
}
]
}
]
}
]
}
...
<div layout="layout" ng-repeat="container in layout.containers" ng-class="container">
<div ng-repeat="row in container.rows">
<div ng-repeat="column in row.columns" ng-class="column.class">
<{{column.directive}}></{{column.directive}}>
</div>
</div>
</div>
...
angular.module('rpmsol').directive('wpMain', wpMainDirective);
function wpMainDirective($interpolate) {
var controller = function(brainService, $scope, $state) {
$scope.directive = {};
var currentState = $state.current.name;
brainService.getDirectiveScope('wpMain', {}).then(function(response) {
$scope.layout = response.states[currentState];
});
};
var compile = function(tElement, tAttrs, transclude) {
var directiveNames = $interpolate(tAttrs.$attr.layout);
}
return {
restrict: 'E',
// replace: true,
scope: {
layout: '=',
},
controller: controller,
templateUrl: 'directive/wpMain/wpMain.html',
compile: compile
};
};
If you're only dealing with a couple options for what a column might be, I would suggest going with #georgeawg's answer.
However, if you expect that number to grow, what you might opt for instead is something along the following lines:
<div layout="layout" ng-repeat="container in layout.containers" ng-class="container">
<div ng-repeat="row in container.rows">
<div ng-repeat="column in row.columns" ng-class="column.class">
<column-directive type="column.directive"></column-directive>
</div>
</div>
and then in your JS...
yourApp.directive('columnDirective', columnDirectiveFactory);
columnDirectiveFactory.$inject = ['$compile'];
function columnDirectiveFactory ($compile) {
return {
restrict: 'E',
scope: {
type: '='
},
link: function (scope, elem, attrs) {
var newContents = $compile('<' + scope.type + '></' + scope.type + '>')(scope);
elem.contents(newContents);
}
};
}
To the best of my knowledge, Angular doesn't have any built-in facility to choose directives in a truly dynamic fashion. The solution above allows you to pass information about which directive you want into a generic columnDirective, whose link function then goes about the business of constructing the correct element, compiling it against the current scope, and inserting into the DOM.
There was an issue with the promise in my original posted code which was preventing me from recompiling the template with the correct directive names. The issue was that I was trying to access the JSON object in the preLink function, but the promise hadn't been resolved yet. This meant that my scope property didn't yet have data.
To fix this I added my service promise to the directive scope $scope.layoutPromise = brainService.getDirectiveScope('wpMain', {}); to which I then called and resolved in my link function. I managed to have Angular compile all of my directive names from the JSON object, but I had to do it in a very hackish way. I will be taking your recommendations #cmw in order to make my code simpler and more 'Angulary'
This is currently my working code:
...
angular.module('rpmsol').directive('wpMain', wpMainDirective);
function wpMainDirective($interpolate, $compile) {
var controller = function(brainService, $scope, $state) {
$scope.currentState = $state.current.name;
$scope.layoutPromise = brainService.getDirectiveScope('wpMain', {});
};
var link = function(scope, element, attributes) {
scope.layoutPromise.then(function sucess(response) {
var template = [];
angular.forEach(response.states[scope.currentState].containers, function(container, containerKey) {
template.push('<div class="container' + (container.fluid?'-fluid':'') + '">');
//loop rows
angular.forEach(container.rows, function(row, rowkey) {
template.push('<div class="row">');
angular.forEach(row.columns, function(column, columnKey) {
template.push('<div class="' + column.class + '">');
template.push('<' + column.directive +'></' + column.directive + '>')
template.push('</div>');
});
template.push('</div>');
});
template.push('</div>');
});
template = template.join('');
element.append($compile(template)(scope));
})
};
return {
scope: true,
controller: controller,
link: link
};
};
I am trying to use tooltip in ng-repeat based on AngularJs: grab compiled html and set into tooltip
However I a somehow not able to make it work.
My html-
<tr ng-repeat="row in docDetails">
<td class="useBootstrap uploadedDocs">
<div class="useBootstrap col-sm-2" upload-info="row" index="{{$index}}">
<p tooltip-html-unsafe="{{tooltips[$index] }}"> {{ row.FileName | limitTo: 15 }}{{row.FileName.length > 15 ? '...' : ''}}</p>
My directive
app.directive('uploadInfo', function ($compile, $timeout) {
/* wrap in root element so we can get final innerHTML*/
var tipTemplate = '<div> {{row.FileName}} injected in the tooltip </p><div>';
return {
link: function (scope, el, attrs) {
var tipComp = $compile(tipTemplate)(scope)
$timeout(function () {
scope.tooltips[attrs.index] = tipComp.html()
});
}
}
});
Controller i have declared
$scope.tooltips = [];
Can you tell me if I am missing anything?
I have a directive that creates a UI that allows the user to perform a search. The directive wraps content which will transclude and become the template for each individual search result. Something like this:
<search>
<div class="someStyle" ng-click="selectResult(result)">{{result.Name}}</div>
</search>
I'd like the ng-click to call the selectResult function on the controller's scope, but have the result object come from the directive. How can I accomplish this with an isolated scope in the directive?
Instead of using ng-transclude, you can build your own search transclude directive that can be used to put result onto the transcluded scope. For example, your search directive might look something like this with ng-repeat and the search-transclude directive where you want the transcluded content:
.directive("search", function (SearchResults) {
return {
restrict: "AE",
transclude: true,
scope: {},
template: '<div ng-repeat="result in results">Search Relevance:' +
'{{result.relevance}}' +
//the most important part search-transclude that receives the current
//result of ng-repeat
'<div search-transclude result="result"></div></div>',
link: function (scope, elem, attrs) {
//get search results
scope.results = SearchResults.results;
}
}
})
Build search transclude directive as follows:
.directive("searchTransclude", function () {
return {
restrict: "A",
link: function (scope, elem, attrs, ctrl, $transclude) {
//create a new scope that inherits from the parent of the
//search directive ($parent.$parent) so that result can be used with other
//items within that scope (e.g. selectResult)
var newScope = scope.$parent.$parent.$new();
//put result from isolate to be available to transcluded content
newScope.result = scope.$eval(attrs.result);
$transclude(newScope, function (clone) {
elem.append(clone);
});
}
}
})
The transcluded content will now be able to see selectResult function if it exists in the scope where the search directive was created. Example here.
Transcluded content will always use the scope in which the directive element resides, i.e. your controller scope. That's why if you want the result argument of selectResult function to get it's value from isolated scope, then you need to establish two way binding between isolated scope's and controller scope's result properties. After setting the result property to desired value in isolated scope the controller's scope result property will be updated to the same value. So , transcluded content will use controller's result which is in sync with isolated scope's result.
1) add resultAttr='result' attribute to directive element.
<search resultAttr='result'>
<div class="someStyle" ng-click="selectResult(result)">{{result.Name}}</div>
</search>
2) establish two-way binding for result property when you define isolated scope in directive:
scope: {
result: "=resultAttr"
}
3) set result to some value in directive
I'd like the ng-click [in the directive] to call the selectResult
function on the controller's scope...
To pass functions (or properties) into an isolate scope, you use attributes on the directive tag.
...but have the result object come from the directive [scope].
If you want the contents of a directive tag to have access to the directive's scope, you DON'T use transclude. Specifying transclude: true tells angular NOT to allow the contents of a directive tag to have access to the directive's scope--the opposite of what you want.
To accomplish #1, you could make the user specify the template like this:
<div ng-controller="MainCtrl">
<search external-func='selectResult'>
<div class="someStyle" ng-click="selectResult(result)">{{result.Name}}</div>
</search>
</div>
Note, the user needs to add an extra attribute to the <search> tag. Yet, that html may comport better with angular's philosophy that the html should give hints to the developer about what javascript will operate on the elements.
Then you specify the isolate scope like this:
scope: {
selectResult: '=externalFunc'
},
To accomplish #2, don't specify transclude: true in the directive:
var app = angular.module('myApp',[]);
app.controller('MainCtrl', ['$scope', function($scope) {
$scope.selectResult = function(result) {
console.log("In MainCtrl: " + result.Name);
};
}]);
app.controller('DirectiveCtrl', ['$scope', function($scope) {
$scope.results = [
{Name: "Mr. Result"},
{Name: "Mrs. Result"}
]
}]);
app.directive('search', function() {
return {
restrict: 'E',
scope: {
selectResult: '=externalFunc'
},
template: function(element, attrs) {
// ^ ^
// | |
// directive tag --+ +-- directive tag's attributes
var inner_div = element.children();
inner_div.attr('ng-repeat', 'result in results')
//console.log("Inside template func: " + element.html());
return element.html(); //Must return a string. The return value replaces the innerHTML of the directive tag.
},
controller: 'DirectiveCtrl'
}
}]);
The html could provide an even better record of what the javascript does if you make the user specify their template in more detail:
<search external-func='selectResult'>
<div class="someStyle"
ng-click="selectResult(result)"
ng-repeat="result in results">{{result.Name}}
</div>
</search>
But if you insist on the minimalist html:
<search>
<div class="someStyle" ng-click="selectResult(result)">{{result.Name}}</div>
</search>
...then you can dynamically add the ng-repeat attribute(as shown above), and it's also possible to dynamically map an external function to the isolate scope:
var app = angular.module('myApp',[]);
app.controller('MainCtrl', ['$scope', function($scope) {
$scope.selectDog = function(result) {
console.log("In MainCtrl: you clicked " + result.Name);
};
$scope.greet = function(result) {
console.log('MainCtrl: ' + result.Name);
};
}]);
app.controller('DirectiveCtrl', ['$scope', function($scope) {
$scope.results = [
{Name: "Mr. Result"},
{Name: "Mrs. Result"}
]
}]);
app.directive('search', function() {
return {
restrict: 'E',
scope: {
externalFunc: '&externalFunc' //Cannot write => externalFunc: '&'
}, //because the attribute name is
//'external-func', which means
//the left hand side would have to be external-func.
template: function(element, attrs) {
//Retrieve function specified by ng-click:
var inner_div = element.children();
var ng_click_val = inner_div.attr('ng-click'); //==>"selectResult(result)"
//Add the outer_scope<==>inner_scope mapping to the directive tag:
//element.attr('external', ng_click_val); //=> No worky! Angular does not create the mapping.
//But this works:
attrs.$set('externalFunc', ng_click_val) //=> external-func="selectResult(result)"
//attrs.$set('external-func', ng_click_val); //=> No worky!
//Change ng-click val to use the correct call format:
var func_args = ng_click_val.substring(ng_click_val.indexOf('(')); //=> (result)
func_args = func_args.replace(/[\(]([^\)]*)[\)]/, "({$1: $1})"); //=> ({result: result})
inner_div.attr('ng-click', 'externalFunc' + func_args); //=> ng-click="externalFunc({result: result})"
//Dynamically add an ng-repeat attribute:
inner_div.attr('ng-repeat', 'result in results')
console.log("Template: " + element[0].outerHTML);
return element.html();
},
controller: 'DirectiveCtrl'
}
})
If you want to call the external function with more than one argument, you can do this:
var app = angular.module('myApp',[]);
app.controller('MainCtrl', ['$scope', function($scope) {
$scope.selectResult = function(result, index) {
console.log("In MainCtrl: you clicked "
+ result.Name
+ " "
+ index);
};
}]);
app.controller('DirectiveCtrl', ['$scope', function($scope) {
$scope.results = [
{Name: "Mr. Result"},
{Name: "Mrs. Result"}
]
}]);
app.directive('search', function() {
return {
restrict: 'E',
scope: {
external: '='
},
template: function(element, attrs) {
//Extract function name specified by ng-click:
var inner_div = element.children();
var ng_click_val = inner_div.attr('ng-click'); //=>"selectResult(result, $index)"
var external_func_name = ng_click_val.substring(0, ng_click_val.indexOf('(') ); //=> selectResult
external_func_name = external_func_name.trim();
//Add the outer_scope<==>inner_scope mapping to the directive tag:
//element.attr('externalFunc', ng_click_val); => No worky!
attrs.$set('external', external_func_name); //=> external="selectResult"
//Change name of ng-click function to 'external':
ng_click_val = ng_click_val.replace(/[^(]+/, 'external');
inner_div.attr('ng-click', ng_click_val);
//Dynamically add ng-repeat to div:
inner_div.attr('ng-repeat', 'result in results');
console.log("Template: " + element[0].outerHTML);
return element.html();
},
controller: 'DirectiveCtrl'
}
});
Here is my plunker and the code I can't get to work starts on line 32
http://plnkr.co/edit/pmCjQL39BWWowIAgj9hP?p=preview
I am trying to apply an equivalent to markdown filter onto a directive... I created the filter and tested with manually applying the filter and it works that way,, but I should only use the filter conditionally when the type of content on directive is set to markdown.
I am trying to accomplish this by updating ng-model >>> ngModel.$setViewValue(html) but I am getting an error
ngModel.$setViewValue is not a function.. which makes me thing that the controller is not recognized although it is required by the directive.
Here is a working controller:
var app = angular.module('testOne', ["ngResource", "ngSanitize"]);
app.controller('testOneCtrl', function ($scope) {
$scope.product = {
id:12,
name:'Cotton T-Shirt, 2000',
description:'### markdown\n - list item 1\n - list item 2',
price:29.99
};
});
app.directive("myText", function ($parse) {
return {
restrict: "E",
require: "?ngModel",
scope:{
css: "#class", type: "#type"
},
controller: function ($scope, $element, $attrs) {},
templateUrl: "template.html",
compile: function(elm, attrs, ngModel){
var expFn = $parse(attrs.contentType + '.' + attrs.value);
return function(scope,elm,attrs){
scope.$parent.$watch(expFn, function(val){
scope.exp = { val: val };
if ( attrs.type == 'markdown'){
var converter = new Showdown.converter();
var html = converter.makeHtml(val);
//scope.exp.val = html;
ngModel.$setViewValue(html);
ngModel.$render();
}
})
scope.$watch('exp.val', function(val){
expFn.assign(scope.$parent, val)
})
}
}
}
})
This is a filter for markdown which works when applied.. (I would consider using the filter if I could figure out the way to conditionally apply it to existing directive but I'd rather do it with ng-model)
/*
app.filter('markdown', function ($sce) {
var converter = new Showdown.converter();
return function (value) {
var html = converter.makeHtml(value || '');
return $sce.trustAsHtml(html);
};
});
*/
Here is the directive template
<div ng-class="{{css}}"
ng-click="view = !view"
ng-bind-html="exp.val">
</div>
<div>
<textarea rows="4" cols="30" ng-model="exp.val"></textarea>
</div>
This is the directive in use:
<mb-text ng-cloak
type="markdown"
content-type="product"
value="description"
class="test-one-text-2">
</mb-text>
Why ngModel is empty?
When using require on a directive the controller is passed as the 4th argument to the linking function. In you code you try to reference it as an argument of the compile function. The controller is only instantiated before the linking phase so it could never be passed into the compile function anyway.
The bigger issue is that require can only get a controller of the same element ({ require: 'ngModel' }), or parent elements ({ require: '^ngmodel' } ). But you need to reference a controller from a child element (within the template).
How to get ngModel?
Do not use require at all as you cannot get child element's controller with it.
From angular.element docs:
jQuery/jqLite Extras
controller(name) - retrieves the controller of the current element or its parent. By default retrieves controller associated with the ngController directive. If name is provided as camelCase directive name, then the controller for this directive will be retrieved (e.g. 'ngModel').
Inside the linking function you can get the hold of the controller like so:
var ngModel = elm.find('textarea').controller('ngModel');
I fixed your directive:
here is a plunker: http://plnkr.co/edit/xFpK7yIYZtdgGNU5K2UR?p=preview
template:
<div ng-class="{{css}}" ng-bind-html="exp.preview"> </div>
<div>
<textarea rows="4" cols="30" ng-model="exp.val"></textarea>
</div>
Directive:
app.directive("myText", function($parse) {
return {
restrict: "E",
templateUrl: "template.html",
scope: {
css: "#class",
type: "#type"
},
compile: function(elm, attrs) {
var expFn = $parse(attrs.contentType + '.' + attrs.value);
return function(scope, elm, attrs) {
scope.exp = {
val: '',
preview: null
};
if (attrs.type == 'markdown') {
var converter = new Showdown.converter();
var updatePreview = function(val) {
scope.exp.preview = converter.makeHtml(val);
return val;
};
var ngModel = elm.find('textarea').controller('ngModel');
ngModel.$formatters.push(updatePreview);
ngModel.$parsers.push(updatePreview);
}
scope.$parent.$watch(expFn, function(val) {
scope.exp.val = val;
});
scope.$watch('exp.val', function(val) {
expFn.assign(scope.$parent, val);
});
};
}
};
});