Site and AdminCentral locales

What is locale

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Two locales in Magnolia

The question of "two locales" is connected with the types of users who access a Magnolia instance.

An ordinary internet user, new or returning – whom we can call a public user – will usually only be able to see and interact with the pages of a published web project or website. The user will be interacting – via the web browser – with a running public instance of Magnolia and will expect that the content of each page on the site will be available in a language he can understand, ideally in his native language. A user who's native language is English will prefer browsing the English language version of a website (the screenshots are from the Travel Demo):

On the other hand, a Magnolia editor/publisher (user) or sysadmin – let's just simplify these roles to a system user – working with the author instance of Magnolia may have different locale preferences than the public user. A system user's native and hence preferred language may be, for example, Spanish but the content being edited may still be in the English language. The system user would probably welcome if

Field labels and descriptions,
Messages (alerts, warnings, information),
App UI elements such as workbenches, columns, forms and actions, and
Buttons in the page editor in edit mode (used to open dialogs)

in the author instance (see also Types of translatable text) were displayed in Spanish rather than in English:

Magnolia has been built to deal with these two separate locale preferences, that is with

Site Locale
AdminCentral Locale.

Determining and setting the latter is fairly straightforward since the system users will usually know which locale they prefer. They can also set the locale themselves directly in the AdminCentral or they may always ask a user with superuser rights to set the preferred locale for them. To determine site locale is slightly more difficult. Public users usually access web pages as anonymous users. Magnolia then has to rely on indirect means that point to the preferred locale of a public user.

Please note that on this page, by site locale we mean a concrete language variant in which a web project's page can be rendered on a public user's device. In Magnolia, there are also other uses of "site", such as in Site module or website (a workspace name).

AdminCentral locale

The AdminCentral locale primarily defines the language of User interface labels that the system user wants to work with in the AdminCentral, for example the language of labels in the Action bar (English on the left, Korean on the right):

An incomplete localisation of a UI element may result in displaying a label in the fallback language, as shown below in the case the Copy page and Paste page actions:

Configuring the AdminCentral locale

When logged-in in the AdminCentral, users may set their language locale parameter via the Language field in the Edit user profile dialog. The setting will be reflected in the names of action menus, actions, buttons and labels throughout the AdminCentral provided the locale is one of the available system languages or it will fallback to English, the default fallback language but configurable.

To set it, open the pull down menu in the top right corner of the browser window and click the first row of the menu, titled Edit user profile if the current locale setting is English. On the Preferences tab:

Choose a language in the Language field:

With superuser role you may set language locales for other users, see Setting an editor's language preference.

The new locale will be applied the next time you log in into the AdminCentral.

Site locale

The setting of a site locale influences the editorial content and template labels and unless a public user registers to a web product/service and actively provides the locale information to the webapp, the webserver has to rely on other means that could help identify the visitors preferred locale.

Determining the locale for a site

There are a number of ways of obtaining some form of locale information. Some of them use advanced techniques such as geolocation based on ping delay or topology, but one of the most common way is to look into the content of a HTTP request. At least the following three parts of an HTTP request are relevant to the identification of the public user's locale:

the User-Agent header
the Accept-Language header
Request-URI

User-Agent

While it may occassionally contain some locale information, for example the en_US part in

Mozilla/5.0 (compatible; Konqueror/4.5; NetBSD 5.0.2; X11; amd64; en_US) KHTML/4.5.4 (like Gecko)

the locale information is redundant information in the User-Agent header and more often than not, the header will not contain it. Internally, Magnolia has no direct means how to check and use this kind of information.

The preferred locale information is communicated in the Accept-Language header.

Accept-Language

The Public instance delivers the final page to a page visitor, and tries to deliver it in a way that fulfills the content of the HTTP request for the page. A part of the HTTP request's header defines which languages the visitor (client) is able to understand, and which locale variant of the page is preferred. The part that does this is the Accept-Language request header and may take one of the following three forms:

<language>
<locale>
*

The first represents language expressed as a 2 or 3-character string, the second represents language as a full language tag, the third says "any language" (see Accept-Language and Language Tags in RFC-2616).

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