{#- events.admin.form.fields: the edition selector. The events admin route
    maps the form by model columns, so edition_id is saved with no route
    change. Expects `event` (None when adding one). It offers what
    editions.event_choices allows the account, None standing for "No
    edition" (see signals.py). The events form is drawn on a POST only to
    show a refused save again, and then the edition that was picked stays
    selected. -#}
{%- if request.method == 'POST' and 'edition_id' in request.form %}
{%- set picked = request.form.get('edition_id', '') %}
{%- else %}
{%- set picked = (event.edition_id | string) if event and event.edition_id else '' %}
{%- endif %}
<div class="col-md-12">
    <label class="form-label">Edition</label>
    <select name="edition_id" class="form-select">
        {% for ed in editions.event_choices(event) %}
        {% if ed is none %}
        <option value="" {{ 'selected' if picked == '' else '' }}>No edition</option>
        {% else %}
        <option value="{{ ed.id }}" {{ 'selected' if picked == ed.id | string else '' }}>{{ ed.name }}{% if not ed.published %} (draft){% endif %}</option>
        {% endif %}
        {% endfor %}
    </select>
    <div class="form-text">The instalment this activity belongs to. Manage editions in their own screen.</div>
</div>