Rails: ImageMagick “`identify -format” command fails in Rails

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I’m using Rails with mini_magick and my code fails on call of image.size with such exception:

`identify -format %m %w %h %b /tmp/RackMultipart20231025-217-shzlwd.png[0]` failed with error:
  > image.size

Recently I updated my ruby version to 3.1 and Rails to 7.0, so it could be somehow connected with it. Also using mini_magick version 4.11.0.

Any hints how to fix this?

  • I imagine you’d need to double-quote the format specification .... -format "%m %w %h %b" ...

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  • Also, if using v7 ImageMagick, the syntax has changed and you need to use magick identify .... See stackoverflow.com/a/61208844/2836621

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  • Is your MiniMagick trying to use IM 7 and you only have IM 6 installed (or vice-versa)?

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  • @MarkSetchell identify -format "%m %w %h %b" it’s not my code – it’s just error message from trace (seems like ImageMagick code).

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