Renamed the get_multi_language_attr() method to get_multi_lingual_attr(), and renamed the multi-lingual model fields from _zhtw to _zh_hant, and _zhcn to _zh_hans.

accounting/models.py

@@ -23,7 +23,7 @@ from django.db import models
 from django.urls import reverse
 
 from mia_core.templatetags.mia_core import smart_month
-from mia_core.utils import get_multi_language_attr
+from mia_core.utils import get_multi_lingual_attr
 
 
 class Subject(models.Model):
@@ -33,10 +33,11 @@ class Subject(models.Model):
         "self", on_delete=models.PROTECT, null=True, blank=True,
         db_column="parent_sn")
     code = models.CharField(max_length=5)
-    title_zhtw = models.CharField(max_length=32)
+    title_zh_hant = models.CharField(
+        max_length=32, db_column="title_zhtw")
     title_en = models.CharField(max_length=128, null=True, blank=True)
-    title_zhcn = models.CharField(
+    title_zh_hans = models.CharField(
-        max_length=32, null=True, blank=True)
+        max_length=32, null=True, blank=True, db_column="title_zhcn")
     created_at = models.DateTimeField(
         auto_now_add=True, db_column="created")
     created_by = models.ForeignKey(
@@ -60,7 +61,7 @@ class Subject(models.Model):
     @property
     def title(self):
         if self._title is None:
-            self._title = get_multi_language_attr(self, "title")
+            self._title = get_multi_lingual_attr(self, "title")
         return self._title
 
     @title.setter

mia_core/models.py

@@ -21,7 +21,7 @@
 
 from django.db import models
 
-from mia_core.utils import get_multi_language_attr
+from mia_core.utils import get_multi_lingual_attr
 
 
 class Country(models.Model):
@@ -29,8 +29,10 @@ class Country(models.Model):
     sn = models.PositiveIntegerField(primary_key=True)
     code = models.CharField(max_length=2, unique=True)
     name_en = models.CharField(max_length=64)
-    name_zhtw = models.CharField(max_length=32, null=True)
+    name_zh_hant = models.CharField(
-    name_zhcn = models.CharField(max_length=32, null=True)
+        max_length=32, null=True, db_column="name_zhtw")
+    name_zh_hans = models.CharField(
+        max_length=32, null=True, db_column="name_zhcn")
     is_special = models.BooleanField(
         default=False, db_column="special")
     created_at = models.DateTimeField(
@@ -46,19 +48,19 @@ class Country(models.Model):
 
     def __str__(self):
         """Returns the string representation of this country."""
-        return self.code.__str__() + " " + self.name_zhtw.__str__()
+        return self.code.__str__() + " " + self.name.__str__()
 
-    _title = None
+    _name = None
 
     @property
-    def title(self):
+    def name(self):
-        if self._title is None:
+        if self._name is None:
-            self._title = get_multi_language_attr(self, "title")
+            self._name = get_multi_lingual_attr(self, "name")
-        return self._title
+        return self._name
 
-    @title.setter
+    @name.setter
-    def title(self, value):
+    def name(self, value):
-        self._title = value
+        self._name = value
 
     class Meta:
         db_table = "countries"

mia_core/utils.py

@@ -41,15 +41,13 @@ class Language:
     is_default = False
 
     def __init__(self, language):
+        self.db = "_" + language.lower().replace("-", "_")
         if language == "zh-hant":
             self.locale = "zh-TW"
-            self.db = "zhtw"
         elif language == "zh-hans":
             self.locale = "zh-CN"
-            self.db = "zhcn"
         else:
             self.locale = language
-            self.db = language
         self.is_default = (language == settings.LANGUAGE_CODE)
 
     @staticmethod
@@ -61,8 +59,8 @@ class Language:
         return Language(get_language())
 
 
-def get_multi_language_attr(model, name):
+def get_multi_lingual_attr(model, name):
-    """Returns a multi-language attribute of a data model.
+    """Returns a multi-lingual attribute of a data model.
 
     Args:
         model (object): The data model.
@@ -73,12 +71,12 @@ def get_multi_language_attr(model, name):
             language if there is no content in the current language.
     """
     language = Language.current()
-    title = getattr(model, name + "_" + language.db)
+    title = getattr(model, name + language.db)
     if language.is_default:
         return title
     if title is not None:
         return title
-    return getattr(model, name + "_" + Language.default().db)
+    return getattr(model, name + Language.default().db)
 
 
 class UrlBuilder: