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126 lines
2.9 KiB
Markdown
126 lines
2.9 KiB
Markdown
---
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title: lang.Translate
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linkTitle: i18n
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description: Translates a string using the translation tables in the i18n directory.
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categories: [functions]
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keywords: []
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menu:
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docs:
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parent: functions
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function:
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aliases: [i18n,T]
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returnType: string
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signatures: ['lang.Translate KEY [CONTEXT]']
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relatedFunctions: []
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aliases: [/functions/i18n]
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---
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Let's say your multilingual site supports two languages, English and Polish. Create a translation table for each language in the `i18n` directory.
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```
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i18n/
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├── en.toml
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└── pl.toml
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```
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The translation tables can contain both:
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- Simple translations
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- Translations with pluralization
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The Unicode [CLDR Plural Rules chart] describes the pluralization categories for each language.
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[CLDR Plural Rules chart]: https://www.unicode.org/cldr/charts/43/supplemental/language_plural_rules.html
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The English translation table:
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{{< code-toggle file=i18n/en copy=false >}}
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# simple translations
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privacy = 'privacy'
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security = 'security'
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# translations with pluralization
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[day]
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one = 'day'
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other = 'days'
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[day_with_count]
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one = '{{ . }} day'
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other = '{{ . }} days'
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{{< /code-toggle >}}
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The Polish translation table:
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{{< code-toggle file=i18n/pl copy=false >}}
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# simple translations
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privacy = 'prywatność'
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security = 'bezpieczeństwo'
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# translations with pluralization
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[day]
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one = 'miesiąc'
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few = 'miesiące'
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many = 'miesięcy'
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other = 'miesiąca'
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[day_with_count]
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one = '{{ . }} miesiąc'
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few = '{{ . }} miesiące'
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many = '{{ . }} miesięcy'
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other = '{{ . }} miesiąca'
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{{< /code-toggle >}}
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{{% note %}}
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The examples below use the `T` alias for brevity.
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{{% /note %}}
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When viewing the English language site:
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```go-html-template
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{{ T "privacy" }} → privacy
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{{ T "security" }} → security
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{{ T "day" 0 }} → days
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{{ T "day" 1 }} → day
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{{ T "day" 2 }} → days
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{{ T "day" 5 }} → days
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{{ T "day_with_count" 0 }} → 0 days
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{{ T "day_with_count" 1 }} → 1 day
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{{ T "day_with_count" 2 }} → 2 days
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{{ T "day_with_count" 5 }} → 5 days
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````
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When viewing the Polish language site:
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```go-html-template
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{{ T "privacy" }} → prywatność
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{{ T "security" }} → bezpieczeństwo
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{{ T "day" 0 }} → miesięcy
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{{ T "day" 1 }} → miesiąc
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{{ T "day" 2 }} → miesiące
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{{ T "day" 5 }} → miesięcy
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{{ T "day_with_count" 0 }} → 0 miesięcy
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{{ T "day_with_count" 1 }} → 1 miesiąc
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{{ T "day_with_count" 2 }} → 2 miesiące
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{{ T "day_with_count" 5 }} → 5 miesięcy
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```
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In the pluralization examples above, we passed an integer in context (the second argument). You can also pass a map in context, creating a `count` key to control pluralization.
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Translation table:
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{{< code-toggle file=i18n/en copy=false >}}
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[age]
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one = '{{ .name }} is {{ .count }} year old.'
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other = '{{ .name }} is {{ .count }} years old.'
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{{< /code-toggle >}}
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Template:
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```go-html-template
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{{ T "age" (dict "name" "Will" "count" 1) }} → Will is 1 year old.
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{{ T "age" (dict "name" "John" "count" 3) }} → John is 3 years old.
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```
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