javascript - Using ng-show in Angular with an OR and NOT condition -

is possible use ng-show based on 2 conditions, guess in case 3 conditions. know can function or directive when loading view , propagating data dynamically generated form elements using ng-repeat. easier @ point add condition ng-show actual input not marked invalid , form still submit valid. when form first loads last element in dynamically created form displays error message if invalid until $touched = true , $veiwvalue changes.

to keep simple, ng-show looks this:

<div class="list-help-block" ng-messages="emails_form.email.$error" ng-show="emails_form.email.$dirty || emails_form.email.$invalid">     <div ng-messages-include="/app/views/messages.html" ></div> </div> 

this displays error messages fine on invalid entry , on error when form submitted. displays error message (which there shouldn't error) when form loads. , on last input dynamically added form.

what this:

ng-show="emails_form.email.$dirty || emails_form.email.$invalid not mails_form.email.$pristine" 

i don't know if that's possible or if may possible call function fix validation once view loaded , data has been added model. suggestions?

here's whole section used this:

<div ng-repeat="emails in info.instructor.instructor_emails">     <ng-form name="emails_form" novalidate>         <div class="input-group">             <span class="input-group-label">             <span ng-show="info.instructor.instructor_emails.length==1">@</span>             <span ng-show="info.instructor.instructor_emails.length>=2"><a ng-click="updateremoveemail($index)"><i class="fi-x"></i></a></span>         </span>                                                  <input ng-class="{ notvalid: submitted && emails_form.email.$invalid }"type="email" placeholder="jane.doe@example.com" name="email" ng-model="emails.email" ng-required="info.instructor.instructor_emails.length>=2"/>     </div>     <div class="list-help-block" ng-messages="emails_form.email.$error" ng-if="!emails_form.email.$pristine && (emails_form.email.$dirty || emails_form.email.$invalid)">     <div ng-messages-include="/app/views/messages.html" ></div> </div> 

as suggestion, i'd recommend use ngif instead of ngshow practice.

as per understood not, should work:

ng-if="!emails_form.email.$pristine && (emails_form.email.$dirty || emails_form.email.$invalid)"