<form method="get" action="{% url 'haystack_search' %}" class="search-form">
    <div class="input-group input-group-lg">
        <input type="search" name="q" value="{{ request.GET.q }}" class="form-control" placeholder="np. Teatr Wielki w Krakowie">
        <input type="hidden" name="models" value="organizations.organization">
        <span class="input-group-btn">
            <button class="btn btn-primary" type="submit">Szukaj</button>
        </span>
    </div>
</form>

<form method="get" action="{% url 'haystack_search' %}" class="search-form">
    <div class="input-group input-group-lg">
        <input type="search" name="q" value="{{ request.GET.q }}" class="form-control" placeholder="np. Opera Narodowa">
        <input type="hidden" name="models" value="organizations.organization">
        <span class="input-group-btn">
            <button class="btn btn-primary" type="submit">Szukaj</button>
        </span>
    </div>
</form>

Change pleceholder for search form
Change pleceholder for search form
