Improve hatenablog

src/kawaz/apps/activities/contrib/hatenablog/activity.py

@@ -0,0 +1,21 @@
+# coding=utf-8
+"""
+"""
+__author__ = 'Alisue <lambdalisue@hashnote.net>'
+from django.contrib.contenttypes.models import ContentType
+from kawaz.core.personas.models import Persona
+from kawaz.apps.activities.models import Activity
+from kawaz.apps.activities.mediator import ActivityMediator
+
+
+class HatenablogEntryActivityMediator(ActivityMediator):
+
+    def alter(self, instance, activity, **kwargs):
+        if activity and activity.status == 'updated':
+            # 通知が必要な状態の変更を詳細に記録する
+            if activity.previous is not None:
+                previous = activity.previous.snapshot
+                if previous.md5 == instance.md5:
+                    # Nothing have changed
+                    return
+        return activity

src/kawaz/apps/activities/contrib/hatenablog/migrations/0002_auto_20141014_2146.py

@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('hatenablog', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='hatenablogentry',
+            name='md5',
+            field=models.CharField(default='', max_length=32),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name='hatenablogentry',
+            name='created_at',
+            field=models.DateTimeField(verbose_name='Created at'),
+        ),
+        migrations.AlterField(
+            model_name='hatenablogentry',
+            name='title',
+            field=models.CharField(verbose_name='Title', max_length=128),
+        ),
+    ]

src/kawaz/apps/activities/contrib/hatenablog/models.py

@@ -19,6 +19,7 @@ def _get_upload_path(self, filename):
     thumbnail = models.ImageField(_('Image'),
                                   upload_to=_get_upload_path,
                                   default='')
+    md5 = models.CharField(max_length=32)
     created_at = models.DateTimeField(_('Created at'))
 
     def __str__(self):
@@ -28,3 +29,11 @@ class Meta:
         ordering = ('-created_at',)
         verbose_name = _('Hatenablog entry')
         verbose_name_plural = _('Hatenablog entries')
+
+    def get_absolute_url(self):
+        return self.url
+
+from .activity import HatenablogEntryActivityMediator
+from kawaz.apps.activities.registry import registry
+registry.register(HatenablogEntry,
+                  HatenablogEntryActivityMediator())

src/kawaz/apps/activities/contrib/hatenablog/scraper.py

@@ -2,6 +2,7 @@
 """
 """
 __author__ = 'Alisue <lambdalisue@hashnote.net>'
+import hashlib
 import datetime
 import requests
 from bs4 import BeautifulSoup
@@ -30,6 +31,7 @@ def fetch(self):
         for i, entry in enumerate(entries):
             url = entry.link.string
             title = entry.title.string
+            m = hashlib.md5(entry.description.string.encode('utf-8')).digest()
 
             if self.verbose:
                 print("- Fetching entry '{}'... ({}/{})".format(
@@ -45,7 +47,9 @@ def fetch(self):
                 defaults=dict(
                     title=title,
                     created_at=created_at,
-                    thumbnail=thumbnail),
+                    thumbnail=thumbnail,
+                    md5=str(m),
+                ),
             )
             if created:
                 ncreated += 1