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Setting floating point formatting locale for JSF / ICEfaces?

Answer 1

+3 A:

It is likely that you are not using a converter to format the numbers to the appropriate locale.

  <f:view locale="nl">
    <h:outputText value="#{numbers.someDouble}">
      <f:convertNumber pattern="#,##0.00;(#,##0.00)" />
    </h:outputText>
    <br />
    <h:outputText value="#{numbers.someDouble}">
      <f:convertNumber locale="en" pattern="#,##0.00;(#,##0.00)" />
    </h:outputText>
  </f:view>

This view (a Dutch locale view with a number, followed by an English locale number) produces the following output:

12.341.234,43
12,341,234.43

McDowell 2009-11-16 12:02:00

A little test showed me that a simple "<f:convertNumber/>" already suffices in my case. I am puzzled why JSF won't by default format a float to the current locale, but your solution works like a charm. Thanks!

Timo 2009-11-16 12:44:15

`outputText` probably doesn't have any direct support for numbers; it will be given an object (e.g. `java.lang.Double`) and call `toString` on it on output. An `inputText` won't have any direct support either; on input of a String, the Expression Language coerces it back to a double as per its rules for type coercion. For more complex logic, a converter is required. This is a powerful model, as you can convert to/from any type without requiring the input/output control to support the conversion.

McDowell 2009-11-16 14:16:55

You are right! The problem is in the implicit Java Float.toString() that does not consider the locale setting (of even the OS). the <f:convertNumber/> tag effectively tells the outputText to use a locale-aware string conversion.

Timo 2009-11-18 12:46:39

Answer 2

A:

You can use nest <convertNumber> tag and set the default locale to "nl" in faces.config.xml. That way, the converters automatically get and use the default locale and you do not need to specify a pattern at each <convertNumber> tag.

faces-config.xml:

    <application>
        <locale-config>
          <default-locale>nl</default-locale>
        </locale-config>
    </application>

Sylar 2009-11-16 13:31:09

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Setting floating point formatting locale for JSF / ICEfaces?

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