ail-framework/var/www/templates/objects/username/block_usernames_search.html

<div class="card border-secondary my-2">
    <div class="card-body text-dark">
        <h5 class="card-title">Usernames Search:</h5>
        <form action="{{ url_for('objects_subtypes.objects_username_search') }}" id="search_subtype_onj" method='post'>
            <div class="input-group mb-1">
                <input type="text" name="page" value="{% if page %}{{ page }}{% else %}1{% endif %}" hidden="">
                <select class="custom-select col-2" name="search_subtype" required>
                    {% for s in subtypes %}
                        <option value="{{ s }}" {% if s == subtype %}selected{% endif %}>{{ s }}</option>
                    {% endfor %}
                </select>
                <input type="text" class="form-control col-8" name="to_search" value="{% if to_search %}{{ to_search }}{% endif %}" placeholder="Username to Search" required>
                <button class="btn btn-primary input-group-addon search-obj col-2"><i class="fas fa-search"></i></button>
            </div>
            <div class="custom-control custom-switch mt-1">
                <input class="custom-control-input" type="checkbox" name="case_sensitive" id="case_sensitive" {% if case_sensitive %}value="True" checked{% endif %}>
                <label class="custom-control-label" for="case_sensitive">Case Sensitive</label>
            </div>
        </form>
    </div>
</div>