This is because the configuration is global, so if you change it in a controller action, other threads in the same process will also have their CLI changed, which could lead to race conditions. This way of using MiniMagick is highly recommended if you want to maximize performance of your image processing. We will now show the features available. Shell escaping is also handled for you.
If an option has a value that has spaces inside it, just pass it as a regular string. MiniMagick knows which options each tool has, so you will get an explicit NoMethodError if you happen to have mispelled an option. If you want to pass something to standard input, you can pass the :stdin option to call :.
MiniMagick also has stdout alias for "-" for outputing file contents to standard output:. Some MiniMagick tools such as compare output the result of the command on standard error, even if the command succeeded.
The result of MiniMagick::Tool call is always the standard output, but if you pass it a block, it will yield the stdout, stderr and exit status of the command:. ImageMagick supports a number of environment variables for controlling its resource limits. For example, you can enforce memory or execution time limits by setting the following variables in your application's process environment:. For a full list of variables and description, see ImageMagick's resources documentation.
This gem raises an error when ImageMagick returns a nonzero exit code. Sometimes, however, ImageMagick returns nonzero exit codes when the command actually went ok. In these cases, to avoid raising errors, you can add the following configuration:. If you're using the tool directly, you can pass whiny: false value to the constructor:. In that case try installing the posix-spawn gem, and tell MiniMagick to use it when executing shell commands.
Something wrong with this page? Learn more. Asked 9 years, 9 months ago. Active 7 years, 8 months ago. Viewed 10k times. Add a comment. Active Oldest Votes. Hugo Demiglio Hugo Demiglio 1, 1 1 gold badge 16 16 silver badges 24 24 bronze badges. I had to install ImageMagick with --build-from-source flag. I first only reinstalled imagemagick.
No success. I didn't had jasper, but removing jpeg and libtiff as well and then reinstall imagemagick did it. See this comment in the source : Checks to make sure that MiniMagick can read the file and understand it. Michelle Tilley Michelle Tilley k 39 39 gold badges silver badges bronze badges. I have tried it now with a PNG image and it works, but I also need it to work with jpegs and that creates the above error.
This is the output of the identify command. For example, you can enforce memory or execution time limits by setting the following variables in your application's process environment:. For a full list of variables and description, see ImageMagick's resources documentation.
This gem raises an error when ImageMagick returns a nonzero exit code. Sometimes, however, ImageMagick returns nonzero exit codes when the command actually went ok. In these cases, to avoid raising errors, you can add the following configuration:.
If you're using the tool directly, you can pass whiny: false value to the constructor:. In that case try installing the posix-spawn gem, and tell MiniMagick to use it when executing shell commands. Skip to content. Star 2. MIT License. Branches Tags. Could not load branches. Could not load tags. Latest commit. Git stats commits. Failed to load latest commit information.
View code. MiniMagick Why? Requirements ImageMagick or GraphicsMagick command-line tool has to be installed.
D, [T MiniMagick :: Tool :: Magick. MiniMagick :: Tool :: Convert.
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