fab-manager/app/assets/templates/machines/_form.html.erb

<form role="form"
      name="machineForm"
      class="form-horizontal"
      action="{{ actionUrl }}"
      ng-upload="submited(content)"
      upload-options-enable-rails-csrf="true"
      unsaved-warning-form
      novalidate>

  <input name="_method" type="hidden" ng-value="method">

  <section class="panel panel-default bg-light m-lg">
  <div class="panel-body m-r">

    <uib-alert ng-repeat="alert in alerts" type="{{alert.type}}" close="closeAlert($index)">{{alert.msg}}</uib-alert>

    <div class="form-group m-b-lg" ng-class="{'has-error': machineForm['machine[name]'].$dirty && machineForm['machine[name]'].$invalid}">
      <label for="name" class="col-sm-2 control-label">{{ 'name' | translate }} *</label>
      <div class="col-sm-4">
        <input ng-model="machine.name"
               type="text"
               name="machine[name]"
               class="form-control"
               id="machine_name"
               placeholder="{{'name' | translate}}"
               required>
        <span class="help-block" ng-show="machineForm['machine[name]'].$dirty && machineForm['machine[name]'].$error.required" translate>{{ 'name_is_required' }}</span>
      </div>
    </div>

    <div class="form-group m-b-lg">
      <label for="machine_image" class="col-sm-2 control-label">{{ 'illustration' | translate }} *</label>
      <div class="col-sm-10">
        <div class="fileinput" data-provides="fileinput" ng-class="fileinputClass(machine.machine_image)">
            <div class="fileinput-new thumbnail" style="width: 334px; height: 250px;">
                <img src="data:image/png;base64," data-src="holder.js/100%x100%/text:&#xf03e;/font:FontAwesome/icon" bs-holder ng-if="!machine.machine_image">
            </div>
            <div class="fileinput-preview fileinput-exists thumbnail" style="max-width: 334px;">
              <img ng-src="{{ machine.machine_image }}" alt="" />
            </div>
            <div>
                <span class="btn btn-default btn-file">
                  <span class="fileinput-new">{{ 'add_an_illustration' | translate }} <i class="fa fa-upload fa-fw"></i></span>
                  <span class="fileinput-exists" translate>{{ 'change' }}</span>
                  <input type="file"
                         ng-model="machine.machine_image"
                         name="machine[machine_image_attributes][attachment]"
                         accept="image/*"
                         required
                         bs-jasny-fileinput>
                </span>
                <a href="#" class="btn btn-danger fileinput-exists" data-dismiss="fileinput" translate>{{ 'delete' }}</a>
            </div>
        </div>
      </div>
    </div>


    <div class="form-group m-b-xl" ng-class="{'has-error': machineForm['machine[description]'].$dirty && machineForm['machine[description]'].$invalid}">
      <label for="description" class="col-sm-2 control-label">{{ 'description' | translate }} *</label>
      <div class="col-sm-10">
        <input type="hidden"
               name="machine[description]"
               ng-value="machine.description" />
        <summernote ng-model="machine.description"
                    id="machine_description"
                    placeholder=""
                    config="summernoteOpts"
                    name="machine[description]"
                    required>
        </summernote>
        <span class="help-block" ng-show="machineForm['machine[description]'].$dirty && machineForm['machine[description]'].$error.required" translate>{{ 'description_is_required' }}</span>
      </div>
    </div>

    <div class="form-group m-b-xl" ng-class="{'has-error': machineForm['machine[spec]'].$dirty && machineForm['machine[spec]'].$invalid}">
      <label for="spec" class="col-sm-2 control-label">{{ 'technical_specifications' | translate }} *</label>
      <div class="col-sm-10">
        <input type="hidden"
               name="machine[spec]"
               ng-value="machine.spec" />
        <summernote ng-model="machine.spec"
                    id="machine_spec"
                    placeholder=""
                    config="summernoteOpts"
                    name="machine[spec]"
                    required>
        </summernote>
        <span class="help-block" ng-show="machineForm['machine[spec]'].$dirty && machineForm['machine[spec]'].$error.required" translate>{{ 'technical_specifications_are_required' }}</span>
      </div>
    </div>

    <div class="form-group m-b-xl">
      <label class="col-sm-2 control-label" translate>{{ 'attached_files_(pdf)' }}</label>
      <div class="col-sm-10">
        <div ng-repeat="file in machine.machine_files_attributes" ng-show="!file._destroy">
          <input type="hidden" ng-model="file.id" name="machine[machine_files_attributes][][id]" ng-value="file.id" />
          <input type="hidden" ng-model="file._destroy" name="machine[machine_files_attributes][][_destroy]" ng-value="file._destroy"/>

          <div class="fileinput input-group" data-provides="fileinput" ng-class="fileinputClass(file.attachment)">
            <div class="form-control" data-trigger="fileinput">
              <i class="glyphicon glyphicon-file fileinput-exists"></i> <span class="fileinput-filename">{{file.attachment}}</span>
            </div>
            <span class="input-group-addon btn btn-default btn-file"><span class="fileinput-new" translate>{{ 'attach_a_file' }}</span>
              <span class="fileinput-exists" translate>{{ 'change' }}</span><input type="file" name="machine[machine_files_attributes][][attachment]" accept=".pdf"></span>
            <a class="input-group-addon btn btn-danger fileinput-exists" data-dismiss="fileinput" ng-click="deleteFile(file)"><i class="fa fa-trash-o"></i></a>
          </div>

        </div>
        <a class="btn btn-default" ng-click="addFile()" role="button"> {{ 'add_an_attachment' | translate }} <i class="fa fa-file-o fa-fw"></i></a>
      </div>
    </div>

  </div>   <!-- ./panel-body  -->

  <div class="panel-footer no-padder">
    <input type="submit"
           value="{{ 'validate_your_machine' | translate }}"
           class="r-b btn-valid btn btn-warning btn-block p-lg btn-lg text-u-c"
           ng-disabled="machineForm.$invalid"/>
  </div>
  </section>
</form>