Adding card thumbnail to attachments

CHANGELOG.md

@@ -5,6 +5,7 @@
 
 ### Features
 - [CSV Reports] Add fields "created_date", "modified_date", "finished_date" to issues CSV report.
+- [Attachment] Generate 'card-image' size (300x200) thumbnails for attached image files.
 
 ### Misc
 - Improve the django admin panel, now it is more usable and all the selector fields works properly.

settings/common.py

@@ -448,12 +448,15 @@ SOUTH_MIGRATION_MODULES = {
 DEFAULT_AVATAR_SIZE = 80                # 80x80 pixels
 DEFAULT_BIG_AVATAR_SIZE = 300           # 300x300 pixels
 DEFAULT_TIMELINE_IMAGE_SIZE = 640       # 640x??? pixels
+DEFAUL_CARD_IMAGE_WIDTH = 300           # 300 pixels
+DEFAUL_CARD_IMAGE_HEIGHT = 200           # 200 pixels
 
 THUMBNAIL_ALIASES = {
     '': {
         'avatar': {'size': (DEFAULT_AVATAR_SIZE, DEFAULT_AVATAR_SIZE), 'crop': True},
         'big-avatar': {'size': (DEFAULT_BIG_AVATAR_SIZE, DEFAULT_BIG_AVATAR_SIZE), 'crop': True},
         'timeline-image': {'size': (DEFAULT_TIMELINE_IMAGE_SIZE, 0), 'crop': True},
+        'card-image': {'size': (DEFAUL_CARD_IMAGE_WIDTH, DEFAUL_CARD_IMAGE_HEIGHT), 'crop': True},
     },
 }
 

taiga/projects/attachments/serializers.py

@@ -14,28 +14,26 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from os import path
-import hashlib
-
-from django.conf import settings
-
 from taiga.base.api import serializers
 
-from taiga.base.utils.urls import reverse
+from . import services
-
 from . import models
 
 
 class AttachmentSerializer(serializers.ModelSerializer):
     url = serializers.SerializerMethodField("get_url")
+    thumbnail_card_url = serializers.SerializerMethodField("get_thumbnail_card_url")
     attached_file = serializers.FileField(required=True)
 
     class Meta:
         model = models.Attachment
-        fields = ("id", "project", "owner", "name", "attached_file", "size", "url",
+        fields = ("id", "project", "owner", "name", "attached_file", "size",
-                  "description", "is_deprecated", "created_date", "modified_date",
+                  "url", "thumbnail_card_url", "description", "is_deprecated",
-                  "object_id", "order", "sha1")
+                  "created_date", "modified_date", "object_id", "order", "sha1")
         read_only_fields = ("owner", "created_date", "modified_date", "sha1")
 
     def get_url(self, obj):
-        return obj.attached_file.url
+        return obj.attached_file.url
+
+    def get_thumbnail_card_url(self, obj):
+        return services.get_card_image_thumbnailer_url(obj)

taiga/projects/attachments/services.py

@@ -0,0 +1,36 @@
+# Copyright (C) 2014-2015 Taiga Agile LLC <taiga@taiga.io>
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from taiga.base.utils.urls import get_absolute_url
+
+from easy_thumbnails.files import get_thumbnailer
+from easy_thumbnails.exceptions import InvalidImageFormatError
+
+
+def _get_attachment_thumbnailer_url(attachment, thumbnailer_size):
+    try:
+        thumb_url = get_thumbnailer(attachment.attached_file)[thumbnailer_size].url
+        thumb_url = get_absolute_url(thumb_url)
+    except InvalidImageFormatError:
+        thumb_url = None
+
+    return thumb_url
+
+
+def get_timeline_image_thumbnailer_url(attachment):
+    return _get_attachment_thumbnailer_url(attachment, "timeline-image")
+
+
+def get_card_image_thumbnailer_url(attachment):
+    return _get_attachment_thumbnailer_url(attachment, "card-image")

taiga/projects/history/freeze_impl.py

@@ -21,14 +21,13 @@ from django.apps import apps
 from django.contrib.contenttypes.models import ContentType
 from django.core.exceptions import ObjectDoesNotExist
 
-from easy_thumbnails.files import get_thumbnailer
-from easy_thumbnails.exceptions import InvalidImageFormatError
-
 from taiga.base.utils.urls import get_absolute_url
 from taiga.base.utils.iterators import as_tuple
 from taiga.base.utils.iterators import as_dict
 from taiga.mdrender.service import render as mdrender
 
+from taiga.projects.attachments.services import get_timeline_image_thumbnailer_url
+
 import os
 
 ####################
@@ -178,11 +177,7 @@ def _generic_extract(obj:object, fields:list, default=None) -> dict:
 @as_tuple
 def extract_attachments(obj) -> list:
     for attach in obj.attachments.all():
-        try:
+        thumb_url = get_timeline_image_thumbnailer_url(attach)
-            thumb_url = get_thumbnailer(attach.attached_file)['timeline-image'].url
-            thumb_url = get_absolute_url(thumb_url)
-        except InvalidImageFormatError as e:
-            thumb_url = None
 
         yield {"id": attach.id,
                "filename": os.path.basename(attach.attached_file.name),

tests/integration/test_users.py

@@ -216,7 +216,7 @@ def test_change_avatar_removes_the_old_one(client):
         thumbnailer = get_thumbnailer(user.photo)
         original_photo_paths = [user.photo.path]
         original_photo_paths += [th.path for th in thumbnailer.get_thumbnails()]
-        assert list(map(os.path.exists, original_photo_paths)) == [True, True, True, True]
+        assert list(map(os.path.exists, original_photo_paths)) == [True, True, True, True, True]
 
         client.login(user)
         avatar.write(DUMMY_BMP_DATA)
@@ -225,7 +225,7 @@ def test_change_avatar_removes_the_old_one(client):
         response = client.post(url, post_data)
 
         assert response.status_code == 200
-        assert list(map(os.path.exists, original_photo_paths)) == [False, False, False, False]
+        assert list(map(os.path.exists, original_photo_paths)) == [False, False, False, False, False]
 
 
 def test_remove_avatar(client):
@@ -242,13 +242,13 @@ def test_remove_avatar(client):
     thumbnailer = get_thumbnailer(user.photo)
     original_photo_paths = [user.photo.path]
     original_photo_paths += [th.path for th in thumbnailer.get_thumbnails()]
-    assert list(map(os.path.exists, original_photo_paths)) == [True, True, True, True]
+    assert list(map(os.path.exists, original_photo_paths)) == [True, True, True, True, True]
 
     client.login(user)
     response = client.post(url)
 
     assert response.status_code == 200
-    assert list(map(os.path.exists, original_photo_paths)) == [False, False, False, False]
+    assert list(map(os.path.exists, original_photo_paths)) == [False, False, False, False, False]
 
 
 def test_list_contacts_private_projects(client):