Rendering Radio Buttons Individually in WTForms/Jinja2

Question

I'm building a contact manager with Flask for a community group, and I'm working on the function to export contacts as a spreadsheet. I want to export either all contacts, only those who have been assigned to a ticket seller, only those assigned to a specific ticket seller, or those assigned to no ticket seller.

The form layout I want is something like this:

• RadioButton: All Sellers
• RadioButton: Select Seller
  • SelectField: Seller ID
• RadioButton: No Seller Assigned

with a select field tucked in between two of the radio buttons. This requires that I render the radio buttons individually, rather than letting Jinja render them as a group. This is possible, but referencing each individual button for rendering has proven difficult.

Here's the Jinja code I've come up with:

{% for subfield in form.sellers_filter %}
 {% if subfield.id.endswith('0') %}
 <div class="form-group col-4">
 {{ subfield.label }} {{ subfield }}
 </div>
 {% endif %}
 {% if subfield.id.endswith('1') %}
 <div class="form-group col-4">
 {{ subfield.label }} {{ subfield }}
 {{ form.seller }}
 </div>
 {% endif %}
 {% if subfield.id.endswith('2') %}
 <div class="form.group col-4">
 {{ subfield.label }} {{ subfield }}
 </div>
 {% endif %}
{% endfor %}

I'm bothered, though, by the subfield.id.endswith() part, and I'm hoping someone can suggest a more elegant solution.

For reference, here is my form code:

def list_sellers():
 c1 = aliased(Contact)
 c2 = aliased(Contact)
 return db.session.query(c2).
 select_from(c1).join(c2, c2.id==c1.seller_id).
 filter(c1.seller_id != None)
 
class ExportForm(FlaskForm):
 filtered = BooleanField('Apply Filters')
 sellers_filter = RadioField(
 'Filter by Seller',
 choices=[
 ('all', 'All Sellers'),
 ('select', 'Select Seller'),
 ('none', 'No Seller')
 ],
 validators=[Optional()]
 )
 seller = QuerySelectField(
 'Seller',
 query_factory=list_sellers,
 allow_blank=False,
 validators=[Optional()],
 render_kw={'class': 'form-select'},
 )
 submit = SubmitField('Download')

Answer 1

This might be too late, but you can do this using the radio button's label field as follows

{% if subfield.label.text == 'Select Seller' %}

As per this stackoverflow post