Tips for creating an Angular custom directive that wraps an input element within the template

Attempting to create an angular directive that generates a label, input field, and validation code is causing some unexpected behavior.

Initially, I hardcoded the directive to include ng-minlength on the input element. This resulted in the model failing to bind properly. However, upon removing ng-minlength, the binding worked correctly.

Additionally, setting the name property to an attribute specified within the directive prevented error handling from functioning as expected.

The following Plunker provides an illustration of the issue:

http://plnkr.co/edit/BGxB5fENL5L6G7FcvPR5?p=preview

  • Label1 - Highlights how hardcoding the name property enables error handling and showcases the issue with ng-minlength preventing model value binding.
  • Label2 - Shows that removing ng-minlength allows for proper model value binding.
  • Label3 - Demonstrates that dynamically binding the name property disrupts error handling.

Any assistance on this matter would be greatly appreciated. It seems like there might be a simple solution that I am overlooking, as examples of this specific scenario are scarce.

javascriptangularjs

Answer №1

Resolving Empty Invalid Fields

An interesting discussion on this forum sheds light on the behavior of ng-minlength when encountering initial values that trigger validation errors. It seems that ng-minlength treats such cases by returning undefined, hence explaining the absence of values in label 1 and 2 fields.

Tackling Validation Challenges with Dynamic Input Names

The issue revolving around label 2 and 3 stems from Angular's lack of support for dynamic element names during validation processes. This has spurred discussions among users seeking solutions to this limitation. More insights and a potential workaround can be found at:

AngularJS: Fields added dynamically are not registered on FormController

(This elucidates why validation details may be missing from label fields 2 and 3)

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