ng-disabled validation prblem
<p>I have problem with validation, im using ng-disabled on button while form is not validated. I have 2 inputs in form, the problem is that button gets enabled when i enter value in second input while first is empty (first uses autocomplete), but otherwise it works, i dont want that user when enter just 'neto' to button gets enabled, it looks like angular dont sees that angucomplete as part of the form.</p>

<pre><code>    &lt;form name="usForm" role="form" novalidate&gt;

  &lt;div&gt;
  &lt;table class="table table-striped table-hover table-responsive"&gt;
    &lt;thead&gt;
      &lt;tr&gt;
        &lt;th&gt;Stavka&lt;/th&gt;
        &lt;th&gt;Količina&lt;/th&gt;
        &lt;th&gt;&lt;/th&gt;
      &lt;/tr&gt;
    &lt;/thead&gt;
    &lt;tbody&gt;        
      &lt;tr&gt;
        &lt;td&gt;
          &lt;div angucomplete-alt
            id="norma.idartcle"
            placeholder="Aricle"
            pause="100"
            selected-object="object"
            local-data="getarticles"
            search-fields="pass,name"
            title-field="pass,name"
            description-field="norm"
            minlength="2"
            input-class="form-control form-control-small"
            match-class="highlight"
            input-changed="norm.idarticle"
            field-required="true"
            text-no-results="It doesnt exist"
            text-searching="Searching..."
            &gt;
          &lt;/div&gt;
        &lt;/td&gt;
        &lt;td&gt;
           &lt;div class="form-group"&gt;
              &lt;input type="text" class="form-control" name="neto" id="neto" placeholder="Neto" ng-model="norm.neto"  ng-maxlength="6" required /&gt;
            &lt;/div&gt;
        &lt;/td&gt;
        &lt;td colspan="3"&gt;
            &lt;button class="btn btn-primary"  ng-disabled="usForm.$invalid" ng-click="addNorm(object)"&gt;Add&lt;/button&gt;
            &lt;button class="btn btn-default"  ng-click="clearForm()"&gt;Leave&lt;/button&gt;
        &lt;/td&gt;
      &lt;/tr&gt;
    &lt;/table&gt;
  &lt;/div&gt;
&lt;/form&gt;
</code></pre>