CODEWITHSUNDEEP
ruby-on-railscarrierwavejcroprailscastsminimagick
Ken Ho
Ken Ho

Reputation: 61

Rails 4 Carrierwave + Minimagick: Failed to manipulate with MiniMagick, maybe it is not an image? Original Error: `mogrify -crop

Been researching around but fail to pinpoint the problem: I am following Railscasts PRO #182 on cropping images using JCrop, Carrierwave and Minimagick. As I come to recreating image versions I am prompted the error:

CarrierWave::ProcessingError (Failed to manipulate with MiniMagick, maybe it is not an image? Original Error: mogrify -crop! 250x250+531+32 /tmp/mini_magick20160108-6544-1ec50pf.png failed with error: mogrify: unrecognized option -crop!' @ error/mogrify.c/MogrifyImageCommand/4197. ): app/uploaders/image_uploader.rb:48:incrop' app/models/course.rb:15:in crop_image' app/controllers/courses_controller.rb:12:inupdate'

Can somebody help me understand what this error is indicating?

Model

class Course < ActiveRecord::Base
  attr_accessor :crop_x, :crop_y, :crop_w, :crop_h
  after_update :crop_image

  mount_uploader :image, ImageUploader

  def crop_image
    image.recreate_versions! if crop_x.present?
  end
end

Controller

class CoursesController < ApplicationController

  def update
    @course = Course.find(params[:id])
    if @course.update_attributes(course_params)
      if course_params[:image].present?
        render :crop
      else
        redirect_to @course, notice: 'Successfully updated'
      end
    end
  end

  def course_params
    params.require(:course).permit(:title, :image, :crop_x, :crop_y, :crop_w, :crop_h)
  end
end

ImageUploader

class ImageUploader < CarrierWave::Uploader::Base
  include CarrierWave::MiniMagick
  storage :file

  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end

  version :thumb do
    process :crop
    process :resize_to_fit => [250, 250]
  end

  def crop
    if model.crop_x.present?
      resize_to_fit(800, 350)
      manipulate! do |img|
        x = model.crop_x.to_i
        y = model.crop_y.to_i
        w = model.crop_w.to_i
        h = model.crop_h.to_i
        img.crop!("#{w}x#{h}+#{x}+#{y}")
      end
    end
  end
end

Upvotes: 4

Views: 1972

Answers (2)

GN.
GN.

Reputation: 9899

Having same issue with strip. Only happens when images are large. First issue of this was in 2012 and was closed without a great solution.

Upvotes: 0

Ken Ho
Ken Ho

Reputation: 61

Turns out the option -crop! does not exist in command mogrify. The resolution is simply changing .crop! to .crop

i.e. Within ImageUploader:

img.crop!("#{w}x#{h}+#{x}+#{y}") --> img.crop("#{w}x#{h}+#{x}+#{y}")

Upvotes: 2

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