Sorl-thumbnail: 缩略图未链接到键值存储中的源图像

创建于 2014-10-14 · 3评论 · 资料来源: jazzband/sorl-thumbnail

我观察到以下行为：

我的页面对{% thumbnail %}模板标签有两个调用，每个调用都请求另一个尺寸的相同源图像的缩略图。像这样：

{% thumbnail user.get_profile.avatar_image "46x46" crop="center" as im %} .. {% endthumbnail %}
{% thumbnail user_profile.avatar_image "187x187" crop="center" as im %} .. {% endthumbnail %}

（调用来自不同的 Django 模板）

如果 sorl-thumbnail 找不到缩略图，它将按预期创建它们。但是其中一个缩略图没有在键值存储的sorl-thumbnail||thumbnails||xxx条目中引用。

呈现页面后，键值存储如下所示：

# select * from thumbnail_kvstore;
                             key                              |                                                                   value                                                                    
--------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------
 sorl-thumbnail||image||3314722c993608c1dab30949d2504172      | {"storage": "outdoorish.storage.OverwriteStorage", "name": "profiles/avatars/2205.jpg", "size": [300, 423]}
 sorl-thumbnail||image||4d545ece8fb09c9176996000cddc0fac      | {"storage": "django.core.files.storage.FileSystemStorage", "name": "cache/7c/ab/7cab89bcadad6122d441e6d5443fccc2.jpg", "size": [187, 187]}
 sorl-thumbnail||thumbnails||3314722c993608c1dab30949d2504172 | ["4d545ece8fb09c9176996000cddc0fac"]
 sorl-thumbnail||image||256cd182b71debc11e8aae0ed8ee1a9d      | {"storage": "django.core.files.storage.FileSystemStorage", "name": "cache/b2/71/b27103adff0bdbba7d05fc98a51be131.jpg", "size": [46, 46]}
(4 rows)

为什么其中一张图片没有连接到源文件？这种行为是故意的吗？（因为我认为这会导致调用sorl.thumbnail.delete时不会删除缩略图。）

我正在使用sorl-thumbnail==11.12.1b

这是创建缩略图的 Django 日志：

日志获取/创建第一个缩略图：

2014-10-14 14:58:35,131 DEBUG base Getting thumbnail for file [profiles/avatars/2205.jpg] at [187x187] | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/sorl/thumbnail/base.py:67 (get_thumbnail), PID:8096 Thread:140412452124416
2014-10-14 14:58:35,182 DEBUG util (0.001) SELECT "thumbnail_kvstore"."key", "thumbnail_kvstore"."value" FROM "thumbnail_kvstore" WHERE "thumbnail_kvstore"."key" = 'sorl-thumbnail||image||4d545ece8fb09c9176996000cddc0fac' ; args=(u'sorl-thumbnail||image||4d545ece8fb09c9176996000cddc0fac',) | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/django/db/backends/util.py:50 (execute), PID:8096 Thread:140412452124416
2014-10-14 14:58:35,210 DEBUG base Creating thumbnail file [cache/7c/ab/7cab89bcadad6122d441e6d5443fccc2.jpg] at [187x187] with [{'rounded': None, 'padding_color': '#ffffff', 'format': 'JPEG', 'colorspace': 'RGB', 'cropbox': None, 'padding': False, 'upscale': True, 'crop': u'center', 'image_info': {'jfif_version': (1, 1), 'jfif': 257, 'jfif_unit': 1, 'jfif_density': (72, 72), 'dpi': (72, 72)}, 'quality': 95}] | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/sorl/thumbnail/base.py:148 (_create_thumbnail), PID:8096 Thread:140412452124416
2014-10-14 14:58:35,248 DEBUG util (0.001) SELECT "thumbnail_kvstore"."key", "thumbnail_kvstore"."value" FROM "thumbnail_kvstore" WHERE "thumbnail_kvstore"."key" = 'sorl-thumbnail||image||3314722c993608c1dab30949d2504172' ; args=(u'sorl-thumbnail||image||3314722c993608c1dab30949d2504172',) | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/django/db/backends/util.py:50 (execute), PID:8096 Thread:140412452124416
2014-10-14 14:58:35,273 DEBUG util (0.001) SELECT "thumbnail_kvstore"."key", "thumbnail_kvstore"."value" FROM "thumbnail_kvstore" WHERE "thumbnail_kvstore"."key" = 'sorl-thumbnail||image||3314722c993608c1dab30949d2504172' ; args=(u'sorl-thumbnail||image||3314722c993608c1dab30949d2504172',) | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/django/db/backends/util.py:50 (execute), PID:8096 Thread:140412452124416
2014-10-14 14:58:35,308 DEBUG util (0.001) INSERT INTO "thumbnail_kvstore" ("key", "value") VALUES ('sorl-thumbnail||image||3314722c993608c1dab30949d2504172', '{"storage": "outdoorish.storage.OverwriteStorage", "name": "profiles/avatars/2205.jpg", "size": [300, 423]}'); args=(u'sorl-thumbnail||image||3314722c993608c1dab30949d2504172', '{"storage": "outdoorish.storage.OverwriteStorage", "name": "profiles/avatars/2205.jpg", "size": [300, 423]}') | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/django/db/backends/util.py:50 (execute), PID:8096 Thread:140412452124416
2014-10-14 14:58:35,345 DEBUG util (0.001) SELECT "thumbnail_kvstore"."key", "thumbnail_kvstore"."value" FROM "thumbnail_kvstore" WHERE "thumbnail_kvstore"."key" = 'sorl-thumbnail||image||4d545ece8fb09c9176996000cddc0fac' ; args=(u'sorl-thumbnail||image||4d545ece8fb09c9176996000cddc0fac',) | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/django/db/backends/util.py:50 (execute), PID:8096 Thread:140412452124416
2014-10-14 14:58:35,371 DEBUG util (0.000) INSERT INTO "thumbnail_kvstore" ("key", "value") VALUES ('sorl-thumbnail||image||4d545ece8fb09c9176996000cddc0fac', '{"storage": "django.core.files.storage.FileSystemStorage", "name": "cache/7c/ab/7cab89bcadad6122d441e6d5443fccc2.jpg", "size": [187, 187]}'); args=(u'sorl-thumbnail||image||4d545ece8fb09c9176996000cddc0fac', '{"storage": "django.core.files.storage.FileSystemStorage", "name": "cache/7c/ab/7cab89bcadad6122d441e6d5443fccc2.jpg", "size": [187, 187]}') | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/django/db/backends/util.py:50 (execute), PID:8096 Thread:140412452124416
2014-10-14 14:58:35,426 DEBUG util (0.001) SELECT "thumbnail_kvstore"."key", "thumbnail_kvstore"."value" FROM "thumbnail_kvstore" WHERE "thumbnail_kvstore"."key" = 'sorl-thumbnail||thumbnails||3314722c993608c1dab30949d2504172' ; args=(u'sorl-thumbnail||thumbnails||3314722c993608c1dab30949d2504172',) | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/django/db/backends/util.py:50 (execute), PID:8096 Thread:140412452124416
2014-10-14 14:58:35,449 DEBUG util (0.001) SELECT "thumbnail_kvstore"."key", "thumbnail_kvstore"."value" FROM "thumbnail_kvstore" WHERE "thumbnail_kvstore"."key" = 'sorl-thumbnail||thumbnails||3314722c993608c1dab30949d2504172' ; args=(u'sorl-thumbnail||thumbnails||3314722c993608c1dab30949d2504172',) | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/django/db/backends/util.py:50 (execute), PID:8096 Thread:140412452124416
2014-10-14 14:58:35,472 DEBUG util (0.000) INSERT INTO "thumbnail_kvstore" ("key", "value") VALUES ('sorl-thumbnail||thumbnails||3314722c993608c1dab30949d2504172', '["4d545ece8fb09c9176996000cddc0fac"]'); args=(u'sorl-thumbnail||thumbnails||3314722c993608c1dab30949d2504172', '["4d545ece8fb09c9176996000cddc0fac"]') | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/django/db/backends/util.py:50 (execute), PID:8096 Thread:140412452124416

日志获取/创建第二个缩略图：

2014-10-14 14:58:37,314 DEBUG base Getting thumbnail for file [profiles/avatars/2205.jpg] at [46x46] | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/sorl/thumbnail/base.py:67 (get_thumbnail), PID:8096 Thread:140412426946304
2014-10-14 14:58:37,333 DEBUG util (0.001) SELECT "thumbnail_kvstore"."key", "thumbnail_kvstore"."value" FROM "thumbnail_kvstore" WHERE "thumbnail_kvstore"."key" = 'sorl-thumbnail||image||256cd182b71debc11e8aae0ed8ee1a9d' ; args=(u'sorl-thumbnail||image||256cd182b71debc11e8aae0ed8ee1a9d',) | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/django/db/backends/util.py:50 (execute), PID:8096 Thread:140412426946304
2014-10-14 14:58:37,345 DEBUG base Creating thumbnail file [cache/b2/71/b27103adff0bdbba7d05fc98a51be131.jpg] at [46x46] with [{'rounded': None, 'padding_color': '#ffffff', 'format': 'JPEG', 'colorspace': 'RGB', 'cropbox': None, 'padding': False, 'upscale': True, 'crop': u'center', 'image_info': {'jfif_version': (1, 1), 'jfif': 257, 'jfif_unit': 1, 'jfif_density': (72, 72), 'dpi': (72, 72)}, 'quality': 95}] | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/sorl/thumbnail/base.py:148 (_create_thumbnail), PID:8096 Thread:140412426946304
2014-10-14 14:58:37,386 DEBUG util (0.001) SELECT "thumbnail_kvstore"."key", "thumbnail_kvstore"."value" FROM "thumbnail_kvstore" WHERE "thumbnail_kvstore"."key" = 'sorl-thumbnail||image||256cd182b71debc11e8aae0ed8ee1a9d' ; args=(u'sorl-thumbnail||image||256cd182b71debc11e8aae0ed8ee1a9d',) | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/django/db/backends/util.py:50 (execute), PID:8096 Thread:140412426946304
2014-10-14 14:58:37,390 DEBUG util (0.001) INSERT INTO "thumbnail_kvstore" ("key", "value") VALUES ('sorl-thumbnail||image||256cd182b71debc11e8aae0ed8ee1a9d', '{"storage": "django.core.files.storage.FileSystemStorage", "name": "cache/b2/71/b27103adff0bdbba7d05fc98a51be131.jpg", "size": [46, 46]}'); args=(u'sorl-thumbnail||image||256cd182b71debc11e8aae0ed8ee1a9d', '{"storage": "django.core.files.storage.FileSystemStorage", "name": "cache/b2/71/b27103adff0bdbba7d05fc98a51be131.jpg", "size": [46, 46]}') | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/django/db/backends/util.py:50 (execute), PID:8096 Thread:140412426946304
2014-10-14 14:58:37,429 DEBUG util (0.001) SELECT "thumbnail_kvstore"."key", "thumbnail_kvstore"."value" FROM "thumbnail_kvstore" WHERE "thumbnail_kvstore"."key" = 'sorl-thumbnail||thumbnails||3314722c993608c1dab30949d2504172' ; args=(u'sorl-thumbnail||thumbnails||3314722c993608c1dab30949d2504172',) | File:/home/anton/.virtualenvs/outdoorish/lib/python2.7/site-packages/django/db/backends/util.py:50 (execute), PID:8096 Thread:140412426946304

资料来源

antonpirker

最有用的评论

我在代码中挖掘了一下，似乎函数KVStore._set_raw() （在cached_db_kvstore.py ）有问题（链接到代码行：https://github.com/mariocesar/sorl-缩略图/blob/master/sorl/thumbnail/kvstores/cached_db_kvstore.py#L43）

这是这种情况：
使用以下参数 (A) 调用_set_raw()函数：

key: thumbnail||thumbnails||3314722c993608c1dab30949d2504172
value: ["4d545ece8fb09c9176996000cddc0fac", "256cd182b71debc11e8aae0ed8ee1a9d"]

KV 存储（Postgres 数据库）中已经有一个带有这些参数 (B) 的条目：

key: thumbnail||thumbnails||3314722c993608c1dab30949d2504172
value: ["4d545ece8fb09c9176996000cddc0fac"]

这就是问题：
现在_set_raw()调用KVStoreModel.objects.get_or_create()并从数据库中获取条目（(A)，其中引用了一个缩略图）。在此之后，它将引用两个缩略图（B）的条目保存到缓存（这是一个django.core.cache.backends.locmem.LocMemCache ）。

条目 (B) 的新版本永远不会保存到数据库中。如果我更改图像，只有一个缩略图被更新，另一个保持不变，因为thumbnail||thumbnails||3314722c993608c1dab30949d2504172条目没有引用它。

我希望我已经描述了该问题，以便维护者之一可以重现该问题。如果您能帮我解决这个问题，那就太好了！谢谢！

antonpirker 于 2014-11-05

👍4

所有3条评论

有这方面的更新吗？谁能解释为什么其中一张图像未连接到键值存储中的源文件？

我很想帮助解决这个问题，但我需要一个关于从哪里开始的指针！

antonpirker 于 2014-11-05

这是这种情况：
使用以下参数 (A) 调用_set_raw()函数：

key: thumbnail||thumbnails||3314722c993608c1dab30949d2504172
value: ["4d545ece8fb09c9176996000cddc0fac", "256cd182b71debc11e8aae0ed8ee1a9d"]

KV 存储（Postgres 数据库）中已经有一个带有这些参数 (B) 的条目：

key: thumbnail||thumbnails||3314722c993608c1dab30949d2504172
value: ["4d545ece8fb09c9176996000cddc0fac"]

我希望我已经描述了该问题，以便维护者之一可以重现该问题。如果您能帮我解决这个问题，那就太好了！谢谢！

antonpirker 于 2014-11-05

👍4

我并不孤单:) 请合并此修复程序，这是非常必要的！

TyVik 于 2016-10-14

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Sorl-thumbnail: 缩略图未链接到键值存储中的源图像

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