Store and retrieve language in user Setting.

babybuddy/forms.py

@@ -41,4 +41,4 @@ class UserPasswordForm(PasswordChangeForm):
 class UserSettingsForm(forms.ModelForm):
     class Meta:
         model = Settings
-        fields = ['dashboard_refresh_rate']
+        fields = ['dashboard_refresh_rate', 'language']

babybuddy/migrations/0004_settings_language.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.2 on 2019-04-17 04:02
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('babybuddy', '0003_add_refresh_help_text'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='settings',
+            name='language',
+            field=models.CharField(choices=[], default='en', max_length=255, verbose_name='Language'),
+        ),
+    ]

babybuddy/models.py

@@ -1,11 +1,13 @@
 # -*- coding: utf-8 -*-
+from django.conf import settings
 from django.contrib.auth.models import User
+from django.contrib.auth.signals import user_logged_in
 from django.db import models
 from django.db.models.signals import post_save
 from django.dispatch import receiver
 from django.utils.timezone import timedelta
 from django.utils.text import format_lazy
-from django.utils.translation import gettext_lazy as _
+from django.utils.translation import activate, gettext_lazy as _, LANGUAGE_SESSION_KEY
 
 from rest_framework.authtoken.models import Token
 
@@ -30,6 +32,12 @@ class Settings(models.Model):
             (timedelta(minutes=15), _('15 min.')),
             (timedelta(minutes=30), _('30 min.')),
         ])
+    language = models.CharField(
+        choices=settings.LANGUAGES,
+        default=settings.LANGUAGE_CODE,
+        max_length=255,
+        verbose_name=_('Language')
+    )
 
     def __str__(self):
         return str(format_lazy(_('{user}\'s Settings'), user=self.user))
@@ -65,3 +73,9 @@ def create_user_settings(sender, instance, created, **kwargs):
 @receiver(post_save, sender=User)
 def save_user_settings(sender, instance, **kwargs):
     instance.settings.save()
+
+
+@receiver(user_logged_in)
+def user_logged_in_callback(sender, request, user, **kwargs):
+    activate(user.settings.language)
+    request.session[LANGUAGE_SESSION_KEY] = user.settings.language

babybuddy/settings/base.py

@@ -110,7 +110,7 @@ LOGOUT_REDIRECT_URL = '/login/'
 # Internationalization
 # https://docs.djangoproject.com/en/1.11/topics/i18n/
 
-LANGUAGE_CODE = 'en-us'
+LANGUAGE_CODE = 'en'
 
 TIME_ZONE = os.environ.get('TIME_ZONE', 'Etc/UTC')
 

babybuddy/templates/babybuddy/user_settings_form.html

@@ -42,21 +42,9 @@
                     {% endwith %}
                 </div>
                 <div class="form-group row">
-                    <label for="id_language" class="col-sm-2 col-form-label">
-                        {% trans "Language" %}
-                    </label>
-                    <div class="col-sm-10">
-                        <select name="language">
-                            {% get_current_language as LANGUAGE_CODE %}
-                            {% get_available_languages as LANGUAGES %}
-                            {% get_language_info_list for LANGUAGES as languages %}
-                            {% for language in languages %}
-                                <option value="{{ language.code }}"{% if language.code == LANGUAGE_CODE %} selected{% endif %}>
-                                    {{ language.name_local }} ({{ language.code }})
-                                </option>
-                            {% endfor %}
-                        </select>
-                    </div>
+                    {% with form_settings.language as field %}
+                        {% include 'babybuddy/form_field.html' %}
+                    {% endwith %}
                 </div>
             </fieldset>
             <fieldset>