adding a configurable property that enables defining a priority for l…

…abel fallback languages, related to #688
NatLibFi · Jan 19, 2018 · 31b7549 · 31b7549
1 parent 4ef44ec
commit 31b7549
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Showing 2 changed files with 32 additions and 8 deletions.
diff --git a/model/Concept.php b/model/Concept.php
@@ -113,13 +113,8 @@ public function getLabel()
         if ($this->resource->label($lang) !== null) {
             return $this->resource->label($lang);
         }
-
-        // 2. label in the vocabulary default language
-        if ($this->resource->label($this->vocab->getConfig()->getDefaultLanguage()) !== null) {
-            return $this->resource->label($this->vocab->getConfig()->getDefaultLanguage());
-        }
-
-        // 3. label in a subtag of the current language
+
+        // 2. label in a subtag of the current language
         // We need to check all the labels in case one of them matches a subtag of the current language
         foreach($this->resource->allLiterals('skos:prefLabel') as $label) {
             // the label lang code is a subtag of the UI lang eg. en-GB - create a new literal with the main language
@@ -128,7 +123,19 @@ public function getLabel()
             }
         }
 
-        // 4. label in any language, including literal with empty language tag
+        // 3. label in the vocabulary default language
+        foreach ($this->vocab->getConfig()->getFallbackLanguages() as $fallback) {
+            if ($this->resource->label($fallback) !== null) {
+                return $this->resource->label($fallback);
+            }
+        }
+
+        // 4. label in the vocabulary default language
+        if ($this->resource->label($this->vocab->getConfig()->getDefaultLanguage()) !== null) {
+            return $this->resource->label($this->vocab->getConfig()->getDefaultLanguage());
+        }
+
+        // 5. label in any language, including literal with empty language tag
         $label = $this->resource->label();
         if ($label !== null) {
             return $label->getLang() ? $label->getValue() . " (" . $label->getLang() . ")" : $label->getValue();

diff --git a/model/VocabularyConfig.php b/model/VocabularyConfig.php
@@ -448,4 +448,21 @@ public function getTypes($lang = null)
         }
         return $ret;
     }
+
+    /**
+     * Returns an array of fallback languages that is ordered by priority and
+     * defined in the vocabulary configuration as a collection.
+     * @return array of language code strings
+     */
+    public function getFallbackLanguages()
+    {
+        $ret = array();
+        foreach ($this->resource->get('skosmos:fallbackLanguages') as $lang) {
+            $ret[] .= $lang;
+        }
+        if (empty($ret)) { // using the vocabulary default language as a fallback.
+            $ret[] = $this->getDefaultLanguage();
+        }
+        return $ret;
+    }
 }