app/templates/_formhelpers.html

{% macro render_input_field(field) %}
<div class="mb-3">
  {{ field.label(class="form-label") }} {# This renders the basic field with
  validation styling #} {{ field(class="form-control" + (" is-invalid" if
  field.errors else "")) }} {% if field.errors %}
  <div class="invalid-feedback">
    {% for error in field.errors %}
    <span>{{ error }}</span>
    {% endfor %}
  </div>
  {% endif %}
</div>
{% endmacro %} {% macro render_textarea_field(field, rows=3) %}
<div class="mb-3">
  {{ field.label(class="form-label") }} {{ field(class="form-control" + ("
  is-invalid" if field.errors else ""), rows=rows) }} {% if field.errors %}
  <div class="invalid-feedback">
    {% for error in field.errors %}
    <span>{{ error }}</span>
    {% endfor %}
  </div>
  {% endif %}
</div>
{% endmacro %}