Load one language in the document properties form

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

HISTORY.rst

@@ -179,6 +179,7 @@
 * Add new and default Tesseract OCR backend to avoid
   Tesseract bug 1670 
   (https://github.com/tesseract-ocr/tesseract/issues/1670)
+* Load only one language in the document properties form.
 
 3.1.11 (2019-04-XX)
 ===================

docs/releases/3.2.rst

@@ -211,6 +211,7 @@ Other changes
 * Add new and default Tesseract OCR backend to avoid
   Tesseract bug 1670
   (https://github.com/tesseract-ocr/tesseract/issues/1670)
+* Load only one language in the document properties form.
 
 Removals
 --------

mayan/apps/documents/forms/document_forms.py

@@ -12,7 +12,7 @@ from mayan.apps.common.forms import DetailForm
 from ..fields import DocumentField
 from ..models import Document
 from ..literals import DEFAULT_ZIP_FILENAME, PAGE_RANGE_ALL, PAGE_RANGE_CHOICES
-from ..utils import get_language_choices
+from ..utils import get_language, get_language_choices
 
 __all__ = (
     'DocumentDownloadForm', 'DocumentForm', 'DocumentPreviewForm',
@@ -151,9 +151,7 @@ class DocumentPropertiesForm(DetailForm):
             {'label': _('UUID'), 'field': 'uuid'},
             {
                 'label': _('Language'),
-                'field': lambda x: dict(get_language_choices()).get(
-                    document.language, _('Unknown')
-                )
+                'field': lambda x: get_language(language_code=document.language)
             },
         ]
 

mayan/apps/documents/utils.py

@@ -7,6 +7,17 @@ from django.utils.translation import ugettext_lazy as _
 from .settings import setting_language_codes
 
 
+def get_language(language_code):
+    language = getattr(
+        pycountry.languages.get(alpha_3=language_code), 'name', None
+    )
+
+    if language:
+        return _(language)
+    else:
+        return _('Unknown language "%s"') % language_code
+
+
 def get_language_choices():
     return sorted(
         [