Feature/i18n localize

[akarzim]

This is a 🐛 bug fix.
This is a 🙋 feature or enhancement.

Summary

This pull request fixes, enhances and tests i18n liquid tags & filters.

Context

Localization

The newly introduced localization (#759) liquid filter & tag does not work, because I18n.l requires an argument that responds to #strftime, which is not the case for String.

This PR relies on Liquid::Utils.to_date to handle date strings.

And localization filter & tag now support arguments and are fully tested.

Usage:

- {{ data.date | l }}
- {{ data.date | l: "short" }}
- {{ data.date | l: "short", "eo" }}
- {{ data.date | l: "eo" }}

- {{ "now" | l }}
- {{ "now" | l: "short" }}
- {{ "now" | l: "short", "eo" }}
- {{ "now" | l: "eo" }}

- {{ "today" | l }}
- {{ "today" | l: "short" }}
- {{ "today" | l: "short", "eo" }}
- {{ "today" | l: "eo" }}

- {{ 1234567890 | l }}
- {{ 1234567890 | l: "short" }}
- {{ 1234567890 | l: "short", "eo" }}
- {{ 1234567890 | l: "eo" }}

- {% l 1995-12-21 %}
- {% l 1995-12-21 short %}
- {% l 1995-12-21 short eo %}
- {% l 1995-12-21 eo %}

- {% l now %}
- {% l now short %}
- {% l now short eo %}
- {% l now eo %}

- {% l today %}
- {% l today short %}
- {% l today short eo %}
- {% l today eo %}

- {% l 11:22:33 %}
- {% l 11:22:33 short %}
- {% l 11:22:33 short eo %}
- {% l 11:22:33 eo %}

- {% l 1995-12-21T11:22:33 %}
- {% l 1995-12-21T11:22:33 short %}
- {% l 1995-12-21T11:22:33 short eo %}
- {% l 1995-12-21T11:22:33 eo %}

- {% l 1234567890 %}
- {% l 1234567890 short %}
- {% l 1234567890 short eo %}
- {% l 1234567890 eo %}

Note: l tag arguments are split by a space, so datetime must not contain a space character.

Translation

Translation tag & filter now accept arguments too, and are fully tested.

Usage:

- {{ "date.day_names" | t | last }}
- {{ "date.day_names" | t: "locale:eo" | last }}
- {{ "day_names" | t: "scope:date,locale:eo" | last }}
- {{ "missing" | t: "default:oops" }}
- {{ "datetime.distance_in_words.about_x_hours" | t: "count:3" }}
- {{ "datetime.distance_in_words.about_x_hours" | t: "count:1,locale:eo" }}

- {% t errors.messages.not_a_number %}
- {% t errors.messages.not_a_number locale:eo %}
- {% t messages.not_a_number scope:errors,locale:eo %}
- {% t missing default:oops %}
- {% t datetime.distance_in_words.about_x_hours count:3 %}
- {% t datetime.distance_in_words.about_x_hours count:1,locale:eo %}

Note: t tag & filter arguments are key:value pairs separated by commas.

[jaredcwhite]

Thanks @akarzim! I'll prioritize this for the next release and will review soon.

[jaredcwhite]

This is great work @akarzim. I will GTM!