Add support for i18n and l10n

The majority of the words on the site are user-generated, but I've tried
to surround everything else with localization calls. I don't know
another language so this will have to do until someone decides to
translate it lol

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

board/models.py

@@ -9,6 +9,7 @@ from django.core.files.base import ContentFile
 from django.dispatch import receiver
 from django.urls import reverse
 from django.utils import timezone
+from django.utils.translation import gettext as _
 from PIL import Image
 from io import BytesIO
 
@@ -152,11 +153,11 @@ class Post(models.Model):
         # Make sure there is at least some content
         self.text = self.text.strip()
         if not (self.text or self.image):
-            raise ValidationError("Please either write a message or upload an image")
+            raise ValidationError(_("Please either write a message or upload an image"))
         # Image upload size check
         if self.image and self.image.size > settings.MAX_UPLOAD_SIZE:
             raise ValidationError(
-                "Image supplied is too large. Maximum image size is %(max)s",
+                _("Image supplied is too large. Maximum image size is %(max)s"),
                 params={"max": settings.MAX_UPLOAD_SIZE},
             )
         # Rate limiting for posts
@@ -169,7 +170,8 @@ class Post(models.Model):
             if delta < self.board.post_cooldown:
                 cooldown = self.board.post_cooldown - delta
                 raise ValidationError(
-                    f"Please wait {int(cooldown.total_seconds())} seconds before posting again"
+                    _(f"Please wait %(cooldown)s seconds before posting again"),
+                    params={"cooldown": int(cooldown.total_seconds())},
                 )
 
 

board/templates/board/board_detail.html

@@ -1,5 +1,6 @@
 {% extends "board/base.html" %}
 {% load post_body %}
+{% load l10n %}
 
 {% block title %}
     {% with title=board.url %}
@@ -22,15 +23,21 @@
     <div class="column">&nbsp;</div>
     <div class="column">
         <div class="row">
-        <h2>Create a new thread</h2>
+        <h2>{% localize on %}Create a new thread{% endlocalize %}</h2>
         </div>
         <div class="row">
             <form method="post" action="{% url 'board:board_detail' url=board.url %}" enctype="multipart/form-data">
                 {% csrf_token %}
                 <table>
                 {{ form.as_table }}
-                <tr><td>&nbsp;</td><td>Max image size: {{ max_upload_size|measure_bytes }}</td></tr>
-                <tr><td>&nbsp;</td><td><input type="submit" value="Submit" /></td></tr>
+                <tr>
+                    <th>&nbsp;</th>
+                    <td>
+                    {% localize on %}Max image size{% endlocalize %}:
+                    {{ max_upload_size|measure_bytes }}
+                    </td>
+                </tr>
+                <tr><th>&nbsp;</th><td><input type="submit" value="Submit" /></td></tr>
                 </table>
             </form>
         </div>

board/templates/board/post_detail.html

@@ -1,5 +1,6 @@
 {% extends "board/base.html" %}
 {% load post_body %}
+{% load l10n %}
 
 {% block title %}
     {% with title=board.url %}
@@ -25,7 +26,13 @@
             {% csrf_token %}
             <table>
             {{ form.as_table }}
-            <tr><td>&nbsp;</td><td><span class="post_form_image_specs">Max image size: {{ max_upload_size|measure_bytes }}</span></td></tr>
+            <tr>
+                <th>&nbsp;</th>
+                <td>
+                    {% localize on %}Max image size{% endlocalize %}:
+                    {{ max_upload_size|measure_bytes }}
+                </td>
+            </tr>
             <tr><td>&nbsp;</td><td><input type="submit" value="Submit" /></td></tr>
             </table>
         </form>

board/templates/board/post_snippet.html

@@ -1,10 +1,12 @@
 {% load post_body %}
+{% load l10n %}
 <div id="p{{post.id}}">
 {# Image #}
 {% if post.thumbnail %}
 {# Image info #}
 <div class="post_image_info">
-    File: <a href="{{post.image.url}}" target="_blank">{{post.original_image_name}}</a>
+    {% localize on %}File{% endlocalize %}:
+    <a href="{{post.image.url}}" target="_blank">{{post.original_image_name}}</a>
     ({{post.image.size|measure_bytes}}, {{post.image_width}}x{{post.image_height}})
 </div>
 
@@ -23,17 +25,19 @@
 {% if post.subject %}
     <span class="post_subject">{{post.subject}}</span>
 {% endif %}
-by <span class="post_name">{{post.name|default:"Anonymous"}}</span>
-at {{post.created}}
+{% localize on %}by{% endlocalize %}
+<span class="post_name">{{post.name|default:"Anonymous"}}</span>
+{% localize on %}at{% endlocalize %}
+{{post.created}}
 {% if reply_link %}
-    [<a href="{{post.get_absolute_url}}">Reply</a>]
+    [<a href="{{post.get_absolute_url}}">{% localize on %}Reply{% endlocalize %}</a>]
 {% endif %}
 
 {# "X replies elided" dialog for OPs on the board #}
 {% if replies_elided > 0 %}
 <br/>
 <span class="replies_elided">
-    ({{replies_elided}} replies elided, click reply to view)
+    ({% localize on %}{{replies_elided}} replies elided, click reply to view{% endlocalize %})
 </span>
 {% endif %}