Reconcile Angular.js and Bootstrap form validation styling

Use Bootstrap's "error" class for styling. You can write less code.

<form name="myForm">
  <div class="control-group" ng-class="{error: myForm.name.$invalid}">
    <label>Name</label>
    <input type="text" name="name" ng-model="project.name" required>
    <span ng-show="myForm.name.$error.required" class="help-inline">
        Required</span>
  </div>
</form>

EDIT: As other answers and comments point out - in Bootstrap 3 the class is now "has-error", not "error".

The classes have changed in Bootstrap 3:

<form class="form-horizontal" name="form" novalidate ng-submit="submit()" action="/login" method="post">
  <div class="row" ng-class="{'has-error': form.email.$invalid, 'has-success': !form.email.$invalid}">
    <label for="email" class="control-label">email:</label>
    <div class="col">
    <input type="email" id="email" placeholder="email" name="email" ng-model="email" required>
    <p class="help-block error" ng-show="form.email.$dirty && form.email.$error.required">please enter your email</p>
    <p class="help-block error" ng-show="form.email.$error.email">please enter a valid email</p>
  ...

Note the quotes around 'has-error' and 'has-success': took a while to find that...