LimeSurvey version: 6.15.4+250710
Installation type: Own server
Custom theme/template: Yes — custom question theme

---

Hi everyone,I'm trying to build a custom question theme to capture an address block in a structured way:

• Row 1: Street and Suite/Apt fields side-by-side
• Row 2: City, Province, and Postal Code (each in one column)

This layout isn't available by default in LimeSurvey, so I created a custom question theme based on the type.However, there's a critical issue: the answers are not being saved — nothing shows up in the response table, and no values are posted back.

What I noticed in the browser console:

• All
  Code:

  <input>

  elements rendered without
  Code:

  id

  and
  Code:

  name

  attributes
• Code:

  aSubQuestion

  returns
  Code:

  null

• The HTML looks like this for each field: <input type="text" id="" name="" class="form-control" placeholder="Street" value="">

My config.xml
<config>
  <metadata>
    <name>addressblock</name>
    <type>question_theme</type>
    <title>Address Block</title>
    <creationDate>2025-07-23</creationDate>
    <lastUpdate>2025-07-23</lastUpdate>
    <author>Your Name</author>
    <authorUrl> your-site.example/
    <authorEmail>your@email.com
    <copyright>Copyright (C) 2025 Your Organization</copyright>
    <license>GNU General Public License version 2 or later</license>
    <version>1.0.0</version>
    <apiVersion>1</apiVersion>
    <lastSecurityUpdate>1.0.0</lastSecurityUpdate>
    <questionType>Q</questionType>
    <group>Text questions</group>
    <subquestions>5</subquestions>
    <answerscales>0</answerscales>
    <description>
      Collect an address with structured fields for street, suite, city, province, and postal code.
    </description>
  </metadata>

  <compatibility>
    <version>3.0</version>
    <version>4.0</version>
    <version>5.0</version>
    <version>6.0</version>
  </compatibility>

  <files>
    <css>
      <filename>css/addressblock.css</filename>
    </css>
    <js>
            <filename>js/addressblock.js</filename>
    </js>
  </files>

  <attributes>
    <attribute>
      <name>placeholder_street</name>
      <category>Display</category>
      <inputtype>text</inputtype>
      <default>Street Address</default>
      <caption>Street field placeholder</caption>
    </attribute>
    <attribute>
      <name>placeholder_suite</name>
      <category>Display</category>
      <inputtype>text</inputtype>
      <default>Apt/Suite</default>
      <caption>Suite field placeholder</caption>
    </attribute>
    <attribute>
      <name>placeholder_city</name>
      <category>Display</category>
      <inputtype>text</inputtype>
      <default>City</default>
      <caption>City field placeholder</caption>
    </attribute>
    <attribute>
      <name>placeholder_province</name>
      <category>Display</category>
      <inputtype>text</inputtype>
      <default>Province</default>
      <caption>Province field placeholder</caption>
    </attribute>
    <attribute>
      <name>placeholder_postal</name>
      <category>Display</category>
      <inputtype>text</inputtype>
      <default>Postal Code</default>
      <caption>Postal code field placeholder</caption>
    </attribute>
  </attributes>

  <engine>
    <load_core_css>true</load_core_css>
    <load_core_js>true</load_core_js>
    <show_as_template>true</show_as_template>
    <show_as_question_type>true</show_as_question_type>

</engine>
</config>



My answer.twig
{% block answer %}
<div class="address-block">
  <div class="row">
    {% for subquestion in subquestions %}
      {% if loop.index0 == 0 %}
        <div class="form-group col-md-8">
          <label for="{{ subquestion.sgqa }}">Street</label>
          <input type="text" class="form-control" id="{{ subquestion.sgqa }}" name="{{ subquestion.sgqa }}" value="{{ subquestion.answer }}" placeholder="{{ question_template_attribute.placeholder_street }}">
        </div>
      {% elseif loop.index0 == 1 %}
        <div class="form-group col-md-4">
          <label for="{{ subquestion.sgqa }}">Suite</label>
          <input type="text" class="form-control" id="{{ subquestion.sgqa }}" name="{{ subquestion.sgqa }}" value="{{ subquestion.answer }}" placeholder="{{ question_template_attribute.placeholder_suite }}">
        </div>
      {% elseif loop.index0 == 2 %}
        <div class="form-group col-md-4">
          <label for="{{ subquestion.sgqa }}">City</label>
          <input type="text" class="form-control" id="{{ subquestion.sgqa }}" name="{{ subquestion.sgqa }}" value="{{ subquestion.answer }}" placeholder="{{ question_template_attribute.placeholder_city }}">
        </div>
      {% elseif loop.index0 == 3 %}
        <div class="form-group col-md-4">
          <label for="{{ subquestion.sgqa }}">Province</label>
          <input type="text" class="form-control" id="{{ subquestion.sgqa }}" name="{{ subquestion.sgqa }}" value="{{ subquestion.answer }}" placeholder="{{ question_template_attribute.placeholder_province }}">
        </div>
      {% elseif loop.index0 == 4 %}
        <div class="form-group col-md-4">
          <label for="{{ subquestion.sgqa }}">Postal Code</label>
          <input type="text" class="form-control" id="{{ subquestion.sgqa }}" name="{{ subquestion.sgqa }}" value="{{ subquestion.answer }}" placeholder="{{ question_template_attribute.placeholder_postal }}">
        </div>
      {% endif %}
    {% endfor %}
  </div>
</div>
{% endblock %}Question:Why are the input fields not being bound correctly to subquestions (no , , or values), and how can I fix this so that responses are captured?Any tips appreciated — especially if I missed something in the or .Thanks in advance!

Hi,
it would have been better you'd attached the entire question theme.
Then we can install it and see where there are mistakes.

BTW:
Why do you surround only one word with the "code" tags, like


but you do not when you insert real code, like the code of the "config.xml" or the "answer.twig"?
It would be better readable.

Joffm

Thank you @Joffm for your feedback. You're actually right. Please find attached the question theme. I would appreciate any help.

Yours sincerely,

Thank you @Joffm for your feedback, and sorry for the messy posting. Please find attached the zip file for the question theme. I would appreciate any help. I wanted to implement prefill (from the suvery using {TOKEN:ATTRIBUTE_X}) but I needed the answer fields to be identifiable.

Without access to a computer I can see at least one problem. I don't think your variable {{ subquestion.sgqa }} is valid.

You need to use the variables available in the core question theme.

- github.com/LimeSurvey/LimeSurvey/blob/ma...r_row_inputtext.twig

... for inspiration, here is a theme based on the multiple-short-text question type - github.com/tpartner/LimeSurvey-Image-Interest-Points-5x-6x