How to set and print views variables in template

In the view
    return render(request, 'admin/user/form.html', {'form': form,'error_msg': error_msg})
In the template
    form action="" method="post">{{ form.as_p }}
    input type="submit" value="Save" /
    /form
    {% if error_msg %}
        {{ error_msg }}
    {% endif %}