Looking up and generating upload short-urls

Dev
1

Appears in Post:

![img-MAVMAbkLhcg3sooqMLUyKIhT](upload://>>>>>yygWIAKKT974aRWzlyDof2O82bL<<<<<.jpeg)

How can I map it to this (and vice versa):

"//127.0.0.1:4200/uploads/default/original/1X/abcafdf0e1d9262d515075420e4d940718796a5d.jpeg"

appears as url property of an Upload.

?

2

You would use this function:

and then lookup the SHA1 in the database to find the upload record.

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3

Ah, so that’s the SHA1? doh!

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4

Yeah, the both the short-url and the regular URL include the SHA1.

The difference is that the long URL uses the original hex-encoded version, which matches the one in the database. The upload:// “short url” is a base62 representation of the same hash, so that it uses fewer characters.

1 Like
5

Sorry, right got it.

So there is a:

  • short-url in the Post
  • url - original long url to upload.
  • SHA1 generated during upload.

and you just gave me the way to find the url from the short-url

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6

sorry, early part of the day, so if my goal is to create the short-url, I need to transcode the SHA1 to base62?

7

Where are you doing this? In the Rails app?

If so, then you can generate the URLs using upload.short_url and upload.url.

To find an upload record in the first place, you can do:

sha1 = Upload.sha1_from_long_url(...)
# or
sha1 = Upload.sha1_from_short_url(...)

# then

upload = Upload.find_by(sha1: sha1)
1 Like
8

Yes, Rails. I’m uploading from the back-end.

OMGoodness:

Upload.last.short_url

"upload://fkO7C9M7SLRhXjEiFTOSUJIdCgJ.jpeg" :tada:

Sorry David, I totally missed that!!

At least this Topic clarifies this all for anyone interested.

Thanks for all the info.

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