Skip to content

Translation & l18n

Jump to bottom
wallenium edited this page Aug 6, 2026 · 3 revisions

Translation Guide

Thank you for helping translate HA Menstruation Cycle! This guide explains how to contribute a translation for Swedish (sv), French (fr), Spanish (es), or any other language.

Translation status

Language Frontend (www/translations/) Backend (translations/) Status
🇬🇧 English ✅ en.json ✅ en.json 100%
🇩🇪 German ✅ de.json ✅ de.json 100%
🇸🇪 Swedish ✅ sv.json (template) ✅ sv.json (template) 100%
🇫🇷 French 🟡 fr.json (template) 🟡 fr.json (template) 96% – Volunteers welcome!
🇪🇸 Spanish 🟡 es.json (template) 🟡 es.json (template) 95% – Volunteers welcome!

How to translate

Step 1 – Fork and clone the repository

git clone https://github.com/<your-username>/HA-menstrual-cycle.git
cd HA-menstrual-cycle
git checkout -b translation/sv   # or fr / es / your-language

Step 2 – Edit the template files

There are two sets of files to translate:

Card UI strings (most important for end users):

custom_components/menstruation_cycle/www/translations/sv.json

This file contains ~428 keys used in the Lovelace dashboard cards. It is already populated with English text as a reference. Replace each English value with the translated text.

Backend strings (config flow, options, services):

custom_components/menstruation_cycle/translations/sv.json

This file contains the strings shown in the Home Assistant UI when setting up or configuring the integration. It has fewer keys (~40) and is lower priority if you want to start small.

Step 3 – Replace English values with your language

Open the file in any text editor. Each line looks like:

"save": "Save",

Replace the value on the right side with your translation:

"save": "Spara",

Leave the key (left side) unchanged. Only change the value (right side, inside the second pair of quotes).

Step 4 – Keep placeholders intact

Some strings contain placeholders that are replaced at runtime. Do not translate or remove these.

Placeholder Meaning Example
{n} A number "Last {n} days"
{count} A count value "{count} cycles"
{value} A calculated value "based on ~{value}/day"
{days} A number of days "for a {days}-day wash routine"

Correct:

"last_n_days": "Senaste {n} dagarna",
"last_cycles": "{count} cykler"

Incorrect (placeholder removed):

"last_n_days": "Senaste dagarna",
"last_cycles": "cykler"

Step 5 – Validate your JSON

Make sure the file is valid JSON before submitting. You can use any of these methods:

# Python (built-in)
python3 -c "import json; json.load(open('custom_components/menstruation_cycle/www/translations/sv.json')); print('OK')"

# Node.js
node -e "require('./custom_components/menstruation_cycle/www/translations/sv.json'); console.log('OK')"

# Online validator
# https://jsonlint.com/

Common mistakes to avoid:

  • Trailing commas after the last key in an object
  • Unescaped quotes inside strings (use \" if a translation needs a literal quote)
  • Accidentally deleting a key or a brace

Step 6 – Test locally

To see your translation in Home Assistant:

  1. Copy your translated sv.json (or fr.json / es.json) into the running Home Assistant instance: 
    custom_components/menstruation_cycle/www/translations/sv.json
  2. Set your Home Assistant language to the matching locale (e.g. sv for Swedish) under Profile → Language.
  3. Clear your browser cache and reload the dashboard.
  4. The cards should now display your translated strings.

For backend strings, restart Home Assistant after copying the file to translations/sv.json.

Step 7 – Open a pull request

  1. Commit your changes: 
    git add custom_components/menstruation_cycle/www/translations/sv.json
git add custom_components/menstruation_cycle/translations/sv.json   # if applicable
git commit -m "feat(i18n): add Swedish (sv) translation"
git push origin translation/sv
  2. Open a pull request against the main branch on GitHub.
  3. In the PR description, mention which language you translated and approximately what percentage is complete.

Key groups explained

The www/translations/*.json file is divided into logical groups. You can focus on the most visible ones first:

Key prefix / group What it controls Priority
card_name, card_description Card titles High
save, cancel, close, yes, no, … Common UI actions High
pregnancy, period, fertile, ovulation, pms, … Phase labels High
opt_* Symptom option labels (e.g. opt_light, opt_cramps) High
cat_* Symptom category labels (e.g. cat_pain, cat_mood) High
tab_* Statistics tab names Medium
nfp_* NFP analysis strings Medium
col_* Table column headers Medium
doctor_report_*, export_* Doctor report UI Low
last_n_days, last_cycles, … Template strings with {n} / {count} High (keep placeholders!)

Adding a new language not yet listed

If you want to add a language other than sv, fr, or es:

  1. Copy www/translations/en.json to www/translations/<code>.json (use the two-letter ISO 639-1 code).
  2. Copy translations/en.json to translations/<code>.json.
  3. Follow the steps above to translate both files.
  4. Add the new language to the table at the top of this file.

Questions

If you are unsure about context, terminology, or how a string is used in the UI, open an issue or ask in the pull request. Screenshots or videos showing the string in context are always helpful.

Clone this wiki locally