{% macro onchange(js) -%}
{%- if js is not none %} onchange="{{ js }}"{% endif -%}
{%- endmacro %}
{% macro measurement_options(selected=none) %}
{% for meas in g.measurements.values() %}
{% endfor %}
{% endmacro %}
{% macro station_options(selected=none) %}
{% for station in g.stations %}
{% endfor %}
{% endmacro %}
{% macro year_options(selected=none) %}
{% for year in g.all_years %}
{% endfor %}
{% endmacro %}
{% set options = {
'measurement': measurement_options,
'station': station_options,
'year': year_options,
} %}
{% macro _selected(is_selected) %}
{%- if is_selected %} selected{% endif -%}
{% endmacro %}