reference https://github.com/okfn/ckan/issues/1188

package_basic_fields.html

{% if show_organizations_selector %}
  {% set existing_org = data.owner_org %}
<div class="control-group">
  <label for="field-organizations" class="control-label">{{ _('Organization') }}</label>
  <div class="controls">
    <select id="field-organizations" name="owner_org" data-module="autocomplete">
      <option value="" {% if not selected_org and data.id %} selected="selected" {% endif %}>{{ _('Select an organization...') }}</option>
      {% for organization in organizations_available %}
        {# get out first org from users list only if there is not an existing org #}
        {% set selected_org = (existing_org and existing_org == organization.id) or (not existing_org and not data.id and organization.id == organizations_available[0].id) %}
        <option value="{{ organization.id }}" {% if selected_org %} selected="selected" {% endif %}>{{ organization.name }}</option>
      {% endfor %}
    </select>
  </div>
</div>
{# private datasets must have an org, so add the owner_org tag in to pass validation #}
{% elif data.owner_org %}
   <input type="hidden" name="owner_org" value="{{ data.owner_org }}"/>
{% endif %}