<input type="file" ngf-select ng-model="picFile" name="file" accept="image/*" ngf-multiple="true" ngf-max-size="20MB" required>

$scope.uploader = newData.file;
createNewRealEstateCase.submitImageAttachment($scope.uploader.$modelValue, real_estate_agent_assignments_id).then(function(result) {
   console.log(result)
})

def image_attachment_by_loan_application
    ap params
    @rea_attachment = RealEstateAgentAssignment.find(params[:real_estate_agent_assignment_id])
    params[:attachment].split(",").each { |image|
      @rea_attachment.real_estate_agent_assignment_attachments.create(real_estate_agent_assignment_id: params[:real_estate_agent_assignment_id], attachment: image)
    }
  end