Nunjucks Date/Time Field Macros

month_select.nunjucks

/*
 *  For use with the nunjucks templating system
 *  http://mozilla.github.io/nunjucks
 *
 *  I created a bunch of macros for quickly creating date/time fields.
 *  Import into your nunjucks template:
 *  "{% import "path/to/datefields.nunjucks" as datefields %}"
 *  And use...
 *  {{ datefields.month_select("yo_month", "M", "", "form-control") }}
 *
 *  See the code for usage examples.
 *
 *  - Caroline, 9/23/2014
 */

{# month_select - create a select field with month options #} 
{% macro month_select(fieldname, format="Month", _id="", _classes="") %}
{# format="Month / Mon / MON / MM (01, 02...) / M = "1, 2" #}
{% set
    months_fullname = [
        "January", "Feburary", "March",
        "April", "May", "June", "July",
        "August", "September", "October",
        "November", "December"
    ]
%}
{% set
    months_short = [
        "Jan", "Feb", "Mar",
        "Apr", "May", "Jun", "Jul",
        "Aug", "Sept", "Oct",
        "Nov", "Dec"
    ]
%}
{% set
    months_num = [
        1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
    ]
%}

<select name="{{ fieldname }}" id="{{_id}}" class="{{_classes}}">
    {% if format == "MON" %}
        {% for mon in months_short %}
            <option>{{ mon | upper}}</option>
        {% endfor %}
    {% elif format == "Mon" %}
        {% for mon in months_short %}
            <option>{{ mon }}</option>
        {% endfor %}
    {% elif format == "MM" %}
        {% for mm in months_num %}
            <option>{{ "0" if mm < 10 else "" }}{{mm}}</option>
        {% endfor %}
    {% elif format == "M" %}
        {% for mm in months_num %}
            <option>{{mm}}</option>
        {% endfor %}
    {% else %} {# "Month" #}
        {% for month in months_fullname %}
            <option>{{month}}</option>
        {% endfor %}
    {% endif %}
</select>
{% endmacro %}