Hash values for custom CSS files

[KaileyT]

Since 3.3.1 uses hash values in stylesheet.css, how should we generate hash values if we want to include a custom.css file?

[_Vinny_]

In a very quick way, you can use the 7-zip to see the value.

[3Di]

$hash = sprintf('%08x', crc32(file_get_contents('my_css_file')));
https://github.com/phpbb/phpbb/pull/601 ... af38946R43

Though I don't think you have to do that.

[AbaddonOrmuz]

It's a crc32 file checksum, although you could use any other algorithm (sha256, sha512, etc) and cut the length.

In GNU/Linix or Unix systems you could do the following:

Code: Select all

sha1sum -b custom.css | cut -c 1-8

Although you could put an arbitrary string.

[PlanetStyles.net]

Although you could put an arbitrary string.

^ This.

Anyone reading this thread shouldn't feel obliged to over-complicate this and replicate phpBB's approach of using checksums. The idea is that when the file's updated, the asset version is also updated in the file path - which forces the browser to re-download that asset and 'replace' whatever's cached.

If you're not making edits particularly frequently, you can just as easily use something like the date you changed the file (eg: ?v=08082020), or some other random thing you can think of (eg: ?v=megacoolupdate1).

You can also live without asset versioning completely, but users will need to clear cache when you update the file.

[KaileyT]

you can use the 7-zip to see the value

Thanks, was able to find it very easily.

Anyone reading this thread shouldn't feel obliged to over-complicate this and replicate phpBB's approach of using checksums.

I understand the asset versioning aspect, but I like to follow phpBB's approach. It's a quick I've had ever since I started using the software.

Thank you for all the replies everyone, they are much appreciated!

[Mannix_]

What about the css files that have been included in the overall_header.html file?

[DTMWC]

Ooo this looks messy, beyond the scope of my realm, I retire from styles and put more time into my homebrew lockdown hobby in the garage while listening to reggae and playing Brian Lara cricket.

[thecoalman]

What about the css files that have been included in the overall_header.html file?

When you purge the cache or other actions like updating the version is incremented, in this case 123.

<link href="./styles/prosilver/theme/stylesheet.css?assets_version=123" rel="stylesheet">

It's considered new file so the browser will download it. The issue is stylesheet.css is static file and will contain import links for other CSS files like this:

@import url("normalize.css?hash=e6c08715");

Since they are using hash value it will change if the file is changed. This only applies to updates though.... If you edit any of these files between updates you need to edit the value hash=but it could be anything.

Purge the cache which will trigger the browser to download new version of stylesheet.css and it will also download new version of any files you have changed value for hash=.

[PlanetStyles.net]

Ooo this looks messy, beyond the scope of my realm, I retire from styles and put more time into my homebrew lockdown hobby in the garage while listening to reggae and playing Brian Lara cricket.

No need to use hash values. You can go back to using (?v=3.3) if you want, or anything else.

[Joyce&Luna]

Hash is specified in the style changes.
I don't think the style will be validated without this hash.

Do you have to determine a new hash every time you change the style?
As you do when supporting the styles, do I have to give everyone a hash?
So I think it's really hard and you really lose the desire to do something there.

[Mannix_]

Thank you for the clarification

[Scanialady]

What about the css files that have been included in the overall_header.html file?

Is there an answer?

[wintstar]

I think that with the new function css files to hash the end of many styles will. Have you developers thought about how much effort style authors have to give support for css hash

Free time is a precious commodity. Not everyone wants to spend it with hashing css files.

[JoshyPHP]

Free time is a precious commodity.

Let me save you some time. Pretty much everything you posted is wrong so you should just log out and forget about it.