the content-type of svg image file is crashed after gzip compressing sync to aws

[hothero]

I found the error due to the content-type is nil from Mime:type.lookup_by_extension(ext), and I fixed it.
#322

[danielfarrell]

For those who find this later, this seems to be better handled by registering the svg mime type in an initializer:

Mime::Type.register "image/svg+xml", :svg

[coneybeare]

@danielfarrell This didn't work for me when placed in mime_types.rb. Are you successfully preventing asset_sync from compressing svg's upon upload?

[danielfarrell]

I wasn't trying to prevent compression. It should be fine if they are
compressed as long as the mime type gets set properly on S3. Without this
the mime type was getting set to application/gzip for me. Maybe we are
actually after different end results.

On Friday, April 22, 2016, Matt Coneybeare [email protected] wrote:

@danielfarrell https://github.com/danielfarrell This didn't work for me
when placed in mime_types.rb. Are you successfully preventing asset_sync
from compressing svg's upon upload?

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#323 (comment)

[coneybeare]

Nope, I was misidentifying the problem. Was set as txt/plain before and your fix made it work, once my cloudfront copy was invalidated (face-palm)

On Apr 22, 2016, at 6:05 AM, Daniel Farrell [email protected] wrote:

I wasn't trying to prevent compression. It should be fine if they are
compressed as long as the mime type gets set properly on S3. Without this
the mime type was getting set to application/gzip for me. Maybe we are
actually after different end results.

On Friday, April 22, 2016, Matt Coneybeare [email protected] wrote:

@danielfarrell https://github.com/danielfarrell This didn't work for me
when placed in mime_types.rb. Are you successfully preventing asset_sync
from compressing svg's upon upload?

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#323 (comment)

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[PikachuEXE]

@coneybeare
Do you think #322 is still required?

[hothero]

So we just register Mime::Type "image/svg+xml" and will not get nil from Mime::Type.lookup_by_extension(ext), right?

If true, maybe readme need to append more advanced usage. But I think #322 still have some use for the future, Mime::Type looks have no all of types.

[PikachuEXE]

So what is a preferred API for searching mime type?
::MIME::Types.type_for or Mime::Type.lookup_by_extension?

[coneybeare]

I am not familiar enough in this area to have a strong opinion, but I am generally in favor of things that work "out of the box" without any additional manual configuration additions.

[PikachuEXE]

@coneybeare
I am fine with that
But I am not familiarized with that mime types gem

[danielfarrell]

Seems to me the best way to handle this is a PR against that gem to add the missing mime types. Anyone have a list of ones that are commonly issues?

[PikachuEXE]

@danielfarrell
I am more interested in why the result give by

• :MIME::Types.type_for
• Mime::Type.lookup_by_extension
  are different
  I don't know where are these 2 methods documented
  So it could be our usage is incorrect

[lloydwatkin]

I'm seeing the same, my svg files get to cloudfront (AWS CDN) as application/gzip which means they aren't displayed. Work around is png for now, but would prefer svg.

[lime]

@lloydwatkin Have you tried the suggestion above to register the right mime type for svg?

# config/initializers/mime_types.rb
Mime::Type.register "image/svg+xml", :svg

Rails recently (5.0) got the above added to the default mime types: rails/rails@7e35cb2

[lloydwatkin]

Yes but it complained it was already defined and I'm on rails 4 at the
moment. Will investigate when I get a chance. Thanks!
On 5 Jul 2016 12:38, "Emil Sågfors" [email protected] wrote:

@lloydwatkin https://github.com/lloydwatkin Have you tried the suggestion
above to register the right mime type for svg?

config/initializers/mime_types.rbMime::Type.register "image/svg+xml", :svg

Rails recently got the above added to the default mime types: rails/rails@
7e35cb2
rails/rails@7e35cb2
It's available in 5.0.0.

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[PikachuEXE]

I guess we should let users know they need to put something like
Mime::Type.register "image/svg+xml", :svg for custom file types
And also let them know there are some types already registered by rails (and that list might change in the future)