I am new to AngularJs and I know that I can use $dirty , $pristine, $ error in form validation. However is it necessary to explicitly create a form in
<form>..</form>
to use these properties ?
Hi since you are new to Angualar js nothing is better to start from the maker itself. As Sathish said AngularJsDocumentation is very good.
To answer your question is Yes you have to create a form explicitly because these are the properties of the form.
To understand the form better you can go to this link http://mrbool.com/the-concepts-of-angularjs-forms/29117
is it necessary to explicitly create a form
The answer to that is no.
While using a form tag is very helpful for creating sets of input tags to process as a whole (usually by sending to a server) it is not necessary for angular's purposes.
You can easily use the ng-form directive as an attribute on other tag types (not just form).
From the source code you can see that if you are using the form tag or ng-form as Element, Attribute or Class you will get the same behavior
restrict: isNgForm ? 'EAC' : 'E'
link
Related
http://www.scientiamobile.com/page/angularwit
Want to be able to do something like this:
<img-wit ng-src="{{trustSrc(profile.pic)}}" w="100"/>
The picture isn't rendering however, although the blank space is sized correctly. Is it possible to use angular directive version of img-wit with ng-src?
UPDATE:
Determined the easiest way to use img-wit is not to implement angularjs directive at all. Instead, just append appropriate img-wit link prefix inside controller.
Support to ngSrc directive has been added in the 0.9.1 version: https://github.com/WURFL/angular-wurfl-image-tailor/releases/tag/0.9.1.
Syntax like the follow is now supported:
<img-wit ng-src="{{myUrl}}"></img-wit>
where {{myUrl}} is the url of the trusted image to load.
Please check https://github.com/WURFL/angular-wurfl-image-tailor#how-to-use-it for further details.
Disclaimer: I work for ScientiaMobile
I want to display the contents from my model in a div which is contenteditable. User will modify this content and it should get saved in my model. I have used the example provided at https://docs.angularjs.org/api/ng/type/ngModel.NgModelController.
The code is available at http://plnkr.co/edit/ruKtNfDWP17npbFU4Te9?p=info
var app = angular.module('docApp', []);
The issue is:
ng-model attribute does not output the data in the div as it does in the input control. Therefore I have to use binding expression.
Because of that editing goes beserk.
How do I get it right?
Thanks.
In my experience contenteditable is extremely tricky for angular to deal with. See this issue on github (which has been open for over 3 years) for a lengthy discussion. You may want to try some third party modules such as akatov/angular-contenteditable.
I have a webform with some normal fields, but also some hidden fields which are set to Secure value (allows use of all tokens), so I am able to use tokens.
How do I pass values from JavaScript into those hidden fields so they are submitted with the form?
I tried using the %post[f1], %post[f2], and %post[f3] tokens, but I still don't know how to add those values with JavaScript.
You can use some basic jQuery for this.
$('input[name=INPUT_NAME]').val('NEW_VALUE');
To fully comply with Drupal theming, you probably want to wrap this up in a Drupal behavior:
(function ($) {
Drupal.behaviors.CUSTOMNAME = {
attach: function(context) {
$('input[name=INPUT_NAME]').val('NEW_VALUE');
}
}
})(jQuery);
...and of course change INPUT_NAME with the name attribute of the hidden input field and CUSTOMNAME with a descriptive camelcase name (e.g ChangeHiddenValuesForm).
As a final note: be sure to include this javascript file on the page of your form.
EDIT:
Sorry, I overlooked the Secure value reference.
Anyway, if you want the value to be secure then you shouldn't be altering it by Javascript as anyone can change it to whatever he or she likes through the DOM... That's why Webform implements the Secure value feature: the value does get submitted along with the form but simply won't be sent to the end user's browser and hereby disabling possible abuse. (For the record: Secure value uses the 'value' type from Drupal's Form API)
If you do want to change such a hidden value, you should opt for Hidden element (less secure, changeable via JavaScript) which already mentions its ability to be changed through Javascript and then use the Drupal behavior described above. Only if you do it like this it gets printed as a hidden input.
If you just want to add some JavaScript then use drupal_add_js(), for example in hook_preprocess_page() in a theme.
function mytheme_preprocess_page(&$vars, $hook) {
drupal_add_js(drupal_get_path('theme', 'mytheme') . '/mytheme.js');
$vars['scripts'] = drupal_get_js();
}
When my field becomes invalid, is there a way to fire a method in my js?
So for example, the user fails to fill out the name field, clicks submit, I want to:
console.log('they forgot');
Thanks
There is a $error object made available by AngularJS. This object contains all of the validations on a particular form and tells if they are valid or invalid.
To get access to this property, we can use the following syntax:
formName.inputfieldName.$error
Here is a jsfiddle sample
This document is a good reference for understanding form-validations using AngularJS.
Also, for dealing with custom validations, you can add your own directives. A sample of making such directives is given in the link above.
I have been trying to build a form input directive which will generate a form input based on the model and the model attributes .
For example,
if the field is name and type is text, the directive will return a input html control,
if the field is a list, then it will return a select box
and so on
These inputs are generated using ng-repeat in the view. The inputs are bound to the model in the scope. This is working fine. However, the form validation fails; i.e if the input controls are invalid, the main form still shows the form is valid.
I have put up a simple plunkr to illustrate the issue - http://plnkr.co/edit/R3NTJK?p=preview
NOTE : I have actually nested the form, as the input name field is also dynamically generated from the scope model.
I have been trying to a get hold on this from the past 2 days and this is really driving me nuts.
I m not sure if I m missing something.
I would really appreciate if some one could help me out with this.
Update:
Use the following link function:
link: function linkFn(scope,elem,attr){
var jqLiteWrappedElement =
angular.element('<input type="url" name="socialUrl" ng-model="social.url">');
elem.replaceWith(jqLiteWrappedElement);
$compile(jqLiteWrappedElement)(scope);
}
Plunker.
For reasons I don't understand, the replaceWith() must be executed before the call to $compile. If someone can explain why this is so, we'd appreciate it!
Update2: in the comments below, Artem mentioned that the DOM must be modified before the linking function is called, so this also works:
var myElem = angular.element('some html');
var linkFn = $compile(myElem);
element.replaceWith(myElem);
linkFn(scope);
Original answer:
Instead of the link function, just use a template in your directive:
template: '<input type="url" name="socialUrl" ng-model="social.url">'