Rails使用paperclip报CommandNotFoundError错的解决

已安装ImageMagick,但在设定了指定大小后paperclip报错:

Paperclip::Errors::CommandNotFoundError (Could not run the `identify` command. Please install ImageMagick.):
Command :: identify -format '%wx%h,%[exif:orientation]' '/var/folders/z2/n3vz292s0z7f995w0_bphm780000gn/T/1ce67fe3a364b6e5918d8fa96478ceef20170222-20952-1cruqw2.png[0]' 2>/dev/null

提示要你安装ImageMagick,但是前面说过已经装过了!!!

使用如下命令查看ImageMagick的信息:

brew info ImageMagick@6 ImageMagick@6: stable 6.9.7-9 (bottled) [keg-only]
Tools and libraries to manipulate images in many formats
https://www.imagemagick.org/
/usr/local/Cellar/ImageMagick@6/6.9.7-9 (1,465 files, 22.2M)
  Poured from bottle on 2017-02-22 at 18:05:21 From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/imagemagick@6.rb
==> Dependencies
Build: pkg-config ✔
Required: libtool ✔, xz ✔
Recommended: jpeg ✔, libpng ✔, libtiff ✔, freetype ✔
Optional: fontconfig ✘, little-cms ✘, little-cms2 ✘, libwmf ✘, librsvg ✘, liblqr ✘, openexr ✘, ghostscript ✘, webp ✘, openjpeg ✘, fftw ✘, pango ✘
==> Requirements
Optional: perl >= 5.5 ✔
==> Options --with-fftw Compile with FFTW support --with-fontconfig Build with fontconfig support --with-ghostscript Build with ghostscript support --with-hdri Compile with HDRI support --with-liblqr Build with liblqr support --with-librsvg Build with librsvg support --with-libwmf Build with libwmf support --with-little-cms Build with little-cms support --with-little-cms2 Build with little-cms2 support --with-opencl Compile with OpenCL support --with-openexr Build with openexr support --with-openjpeg Build with openjpeg support --with-openmp Compile with OpenMP support --with-pango Build with pango support --with-perl Compile with PerlMagick --with-quantum-depth-16 Compile with a quantum depth of 16 bit --with-quantum-depth-32 Compile with a quantum depth of 32 bit --with-quantum-depth-8 Compile with a quantum depth of 8 bit --with-webp Build with webp support --with-zero-configuration Disables depending on XML configuration files --without-freetype Build without freetype support --without-jpeg Build without jpeg support --without-libpng Build without libpng support --without-libtiff Build without libtiff support --without-magick-plus-plus disable build/install of Magick++ --without-modules Disable support for dynamically loadable modules --without-threads Disable threads support
==> Caveats
This formula is keg-only, which means it was not symlinked into /usr/local.

Older version of imagemagick If you need to have this software first in your PATH run:
  echo 'export PATH="/usr/local/opt/ImageMagick@6/bin:$PATH"' >> ~/.bash_profile For compilers to find this software you may need to set:
    LDFLAGS:  -L/usr/local/opt/ImageMagick@6/lib
    CPPFLAGS: -I/usr/local/opt/ImageMagick@6/include For pkg-config to find this software you may need to set:
    PKG_CONFIG_PATH: /usr/local/opt/ImageMagick@6/lib/pkgconfig

进入/usr/local/opt/ImageMagick@6/bin查看,命令都在,应该是没有加入到path中去:

echo 'export PATH="/usr/local/opt/ImageMagick@6/bin:$PATH"' >> ~/.bash_profile

现在ok了!