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Am I misusing directives with too much logic?


Am I misusing directives with too much logic?

By : user2955180
Date : November 22 2020, 10:38 AM
it helps some times Probably your question might be answered more like expressing opinions than offer "right solutions".
I personally wouldn't introduce a controller to a directive if the directive doesn't expose logic which can be used by other directives (require: "^myDirective"). So most of my directives have the code you put into the controller in their link: function (scope, element, attrs) {}.
code :
isExternal()
grossPrice
calculateFields()
roundToMinutes()


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Conditional logic in ng-class in directives template

Conditional logic in ng-class in directives template


By : Chea
Date : March 29 2020, 07:55 AM
may help you . I'm using AngularJS and i'm writing my own directive. I want to use conditional logic in my custom directive. The problem is caused in the template part. Here's a piece of my code: , You have to escape the apostrophes
code :
'<i class="fa" ng-class=" { \'fa-angle-up\': !isCollapsed, \'fa-angle-down\': isCollapsed } "></i>'
How to further abstract directives that have too much duplicated logic

How to further abstract directives that have too much duplicated logic


By : user3354116
Date : March 29 2020, 07:55 AM
should help you out This looks like a perfect use case for use of a 'required' directive. Take a look at the docs for 'require' attribute of the directive definition object.
For instance, you can define a directive called someObject and require it in your custom directive.
code :
<my-directive some-object="somethingOnParentScope"></my-directive>
return {
    restrict: 'A',
    require: 'someObject',


link: function( scope, element, attrs, someObjectCtrl ) {
  // if you need to make someObjectCtrl functionality available through templates, 
  // you will still need to add it to the scope
  scope.someFunction = someObjectCtrl.someFunction;
}
Combine 2 Knockout directives with similar logic

Combine 2 Knockout directives with similar logic


By : R. Ferland
Date : March 29 2020, 07:55 AM
To fix the issue you can do You can simply have a single function on click event and then inside the function compare if there is a change that needs to be asked.
Here is a simple example : https://jsfiddle.net/kyr6w2x3/110/
code :
<form data-bind="visible:ShowForm">
  <input type="text" data-bind="textInput:Input">
  <input type="button" value="Cancel" data-bind="click:CancelForm">
</form>


<div data-bind="text:Status">

</div>
 var MainViewModel = function() {
     var self = this;
     self.Input = ko.observable();
     self.Status = ko.observable();
     self.ShowForm  = ko.observable(true);
     self.canSave  = ko.observable(false);
     self.Input.subscribe(function(newValue){
        if(newValue){
            self.canSave(true);
          }
      })
    self.CancelForm = function(){
        if(self.canSave()){
          self.Status("there is a change that needs to be asked the user");
          }else{
            self.ShowForm(false);
            self.Status("there is no change so the form got hidden")
          }
      }
  };
 ko.applyBindings(new MainViewModel ()); 
AngularJS: directives vs. controllers - What logic to put where?

AngularJS: directives vs. controllers - What logic to put where?


By : Tundra Fizz
Date : March 29 2020, 07:55 AM
I hope this helps . First of all, great question. I think every new-with-angular developer struggles with the differences with all the given components (controller, directive, service, filter etc.).
Let's start with the basic formal definition:
Is it good practice to use directives for splitting controller logic in angular?

Is it good practice to use directives for splitting controller logic in angular?


By : Max
Date : March 29 2020, 07:55 AM
will be helpful for those in need You are aiming at the right direction. Breaking a large controller into more smaller components in the form of directives is the way to go but I would suggest you to introduce few changes.
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