{% for message in get_flashed_messages() %}
<div class="flash">{{ message }}</div>
<br>
{% endfor %}
<form method="POST">
  <label for="device_id">deviceID:</label>
  <br>
  <input name="device_id" id="device_id" required>
  <br><br>
  <label for="sensor_type">sensor type:</label>
  <br>
  <input name="sensor_type" id="sensor_type" required>
  <br><br>
  <label for="data">data:</label>
  <br>
  <input type="number" name="data" id="data" required>
  <br><br>
  <button type="submit">add</button>
  <a href="{{ url_for('data.view_all') }}">back</a>
</form>