fab-manager/app/assets/templates/admin/coupons/_form.html.erb

<div class="form-group" ng-class="{'has-error': couponForm['coupon[name]'].$dirty && couponForm['coupon[name]'].$invalid}">
  <label for="coupon[name]">{{ 'name' | translate }} *</label>
  <input type="text" id="coupon[name]"
         name="coupon[name]"
         class="form-control"
         ng-model="coupon.name"
         required="required"/>
  <span class="help-block error" ng-show="couponForm['coupon[name]'].$dirty && couponForm['coupon[name]'].$error.required" translate>{{ 'name_is_required' }}</span>
</div>

<div class="form-group" ng-class="{'has-error': couponForm['coupon[code]'].$dirty && couponForm['coupon[code]'].$invalid}">
  <label for="coupon[code]">{{ 'code' | translate }} *</label>
  <input type="text" id="coupon[code]"
         name="coupon[code]"
         class="form-control"
         ng-model="coupon.code"
         ng-pattern="/^[A-Z0-9\-]+$/"
         ng-disabled="mode == 'EDIT'"
         required="required"/>
  <span class="help-block error" ng-show="couponForm['coupon[code]'].$dirty && couponForm['coupon[code]'].$error.required" translate>{{ 'code_is_required' }}</span>
  <span class="help-block error" ng-show="couponForm['coupon[code]'].$dirty && couponForm['coupon[code]'].$error.pattern" translate>{{ 'code_must_be_composed_of_capital_letters_digits_and_or_dashes' }}</span>
</div>

<div class="form-group" ng-class="{'has-error': couponForm['coupon[percent_off]'].$dirty && couponForm['coupon[percent_off]'].$invalid}">
  <label for="coupon[percent_off]">{{ 'percent_off' | translate }} *</label>
  <div class="input-group">
    <input type="number" id="coupon[percent_off]"
           name="coupon[percent_off]"
           class="form-control"
           ng-model="coupon.percent_off"
           min="0"
           max="100"
           ng-disabled="mode == 'EDIT'"
           required="required"/>
    <span class="input-group-addon"><i class="fa fa-percent"></i></span>
  </div>
  <span class="help-block error" ng-show="couponForm['coupon[percent_off]'].$dirty && couponForm['coupon[percent_off]'].$error.required" translate>{{ 'percent_off_is_required' }}</span>
  <span class="help-block error" ng-show="couponForm['coupon[percent_off]'].$dirty && (couponForm['coupon[percent_off]'].$error.min || couponForm['coupon[percent_off]'].$error.max)" translate>{{ 'percentage_must_be_between_0_and_100' }}</span>
</div>

<div class="form-group" ng-class="{'has-error': couponForm['coupon[validity_per_user]'].$dirty && couponForm['coupon[validity_per_user]'].$invalid}">
  <label for="coupon[validity_per_user]">{{ 'validity_per_user' | translate }} *</label>
  <select id="coupon[validity_per_user]"
          name="coupon[validity_per_user]"
          class="form-control"
          ng-model="coupon.validity_per_user"
          required="required"
          ng-disabled="mode == 'EDIT'"
          ng-options="( validity | translate ) for validity in validities">
  </select>
  <span class="help-block error" ng-show="couponForm['coupon[validity_per_user]'].$dirty && couponForm['coupon[validity_per_user]'].$error.required" translate>{{ 'validity_per_user_is_required' }}</span>
</div>

<div class="form-group">
  <label for="coupon[valid_until]" translate>{{ 'valid_until' }}</label>
  <div class="input-group">
    <input type="text" id="coupon[valid_until]"
           name="coupon[valid_until]"
           class="form-control"
           ng-model="coupon.valid_until"
           uib-datepicker-popup="{{datePicker.format}}"
           datepicker-options="datePicker.options"
           is-open="datePicker.opened"
           min-date="datePicker.minDate"
           ng-disabled="mode == 'EDIT'"
           ng-click="toggleDatePicker($event)"/>
    <span class="input-group-btn">
      <button type="button" class="btn btn-default" ng-click="toggleDatePicker($event)" ng-disabled="mode == 'EDIT'"><i class="fa fa-calendar"></i></button>
    </span>
  </div>

  <span class="help-block text-info text-xs">
      <i class="fa fa-lightbulb-o"></i> {{ 'leave_empty_for_no_limit' | translate }}
    </span>
</div>

<div class="form-group" ng-class="{'has-error': couponForm['coupon[max_usages]'].$dirty && couponForm['coupon[max_usages]'].$invalid}">
  <label for="coupon[max_usages]">{{ 'max_usages' | translate }}</label>
  <input type="number" id="coupon[max_usages]"
         name="coupon[max_usages]"
         class="form-control"
         ng-model="coupon.max_usages"
         ng-disabled="mode == 'EDIT'"
         min="0"/>
  <span class="help-block error" ng-show="couponForm['coupon[max_usages]'].$dirty && couponForm['coupon[max_usages]'].$error.min" translate>{{ 'max_usages_must_be_equal_or_greater_than_0' }}</span>

  <span class="help-block text-info text-xs">
    <i class="fa fa-lightbulb-o"></i> {{ 'leave_empty_for_no_limit' | translate }}
  </span>
</div>

<div class="form-group">
  <label for="coupon[active]" translate>{{ 'enabled' }}</label>
  <input bs-switch
         ng-model="coupon.active"
         id="coupon[active]"
         type="checkbox"
         class="form-control"
         switch-on-text="{{ 'yes' | translate }}"
         switch-off-text="{{ 'no' | translate }}"
         switch-animate="true" />
  <input type="hidden" name="coupon[active]" value="{{coupon.active}}"/>
</div>