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CUSTOM custom views: localization access for custom components #1671

@AlexKirkouski

Description

@AlexKirkouski

Part of #1666 (CUSTOM custom views — phase 4).

Description

A custom component renders its own static strings (button labels, headings, tooltips) that lsFusion does not provide. Give custom-view authors access to the platform's localization, two complementary ways:

  • declare the strings on the form (so the server returns them already localized in the user's locale, and the component just receives the text); and/or
  • resolve {module.key} message ids and read the current locale from the custom view at runtime.

(Property captions are already localized by the platform — covered by the presentation task; this is for the author's own strings.)

FORM myForm
    OBJECTS o = Order
    PROPERTIES(o) number
    // declare a localizable label the component will use, resolved server-side:
    // e.g. exposed to the component as a localized option/value
    DESIGN myForm { custom = 'OrderApp'; }
;
// runtime form (API name illustrative)
<button>{lsfusion.localize('{order.post}')}</button>   // resolved in the current user locale

Reason

Without this, a custom UI either hardcodes one language or ships its own duplicate dictionary, diverging from the rest of the localized form. Reusing the platform's localization keeps custom components consistent and translation-ready.

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