Ruby on rails Carrierwave和Jcrop未使用Minimagick进行裁剪

我正在学习Ryan Bates关于如何使用Carrierwave和Jcrop裁剪图像的教程

但是，图像没有被裁剪。x、 y、w、h值正在参数中传递，但未进行裁剪。我用的是Minimagick。我真的很感激别人的帮助

我在Stackoverflow中也关注过类似的问题，但没有一个能给出好的解决方案。 多谢各位

照片上传器

  process :resize_to_fit => [800,800]

  version :big do
    process :resize_to_limit => [800,600]
    process :convert => 'jpg'
  end

  version :thumb, :from_version => :big do
    process :crop
    resize_to_fill(100,100)
  end

  def crop
    if model.crop_x.present?
      resize_to_limit(600, 600)
      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 "#{model.crop_x}x#{model.crop_y}+#{model.crop_w}+#{model.crop_h}"
        img
      end
    end
  end

查看

<%= image_tag @photo.photo_url(:big), id: "cropbox" %>

更新

#Cropping spots
def crop_spot
  photo.recreate_versions! if crop_x.present?
end

---

img.crop

方法不会更改图像，但会返回一个新图像。所以要么使用

img.crop

，它在位编辑图像，或删除最后一个

img

，以便重新编辑图像

然后，

crop

方法变为

def crop
  if model.crop_x.present?
    resize_to_limit(600, 600)
    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 "#{model.crop_x}x#{model.crop_y}+#{model.crop_w}+#{model.crop_h}"
    end
  end
end

---

对我来说，它是这样工作的：

include CarrierWave::MiniMagick

version :thumb do
  process :resize_to_fit => [Cover::IMAGE_WIDTH, -1] # '-1' means that height is infinite (this is works for minimagick, but for rmagick it should be '10000').
  process :manual_crop
  process :resize_to_fill => [340, 191]
end

version :big do
  process :resize_to_fit => [Cover::IMAGE_WIDTH, -1]
  process :manual_crop
  process :resize_to_fill => [Cover::IMAGE_WIDTH, Cover::IMAGE_HEIGHT]
end

def manual_crop
  return if model.crop_coords.blank?
  manipulate! do |img|
    img.crop "#{model.crop_coords['w'].to_i}x#{model.crop_coords['h'].to_i}+#{model.crop_coords['x'].to_i}+#{model.crop_coords['y'].to_i}!"
    img
  end
end

crop_坐标是由JCrop返回的坐标（但我们不需要x2和y2，所以这里不使用它们） 考虑到格式为“WxH+X+Y”。

---

请参阅和

您的作物定位方法在哪里？你能把它贴出来吗please@Baloo请检查我的最新邮件是否由javascrpt设置了裁剪文本字段？@Baloo抱歉，我没有看到您的回复。是的，正在设置值。我还是不知道该怎么办！是给玛吉克的。img.crop适用于MiniMagick。文档表明crop期望WxH+X+Y

include CarrierWave::MiniMagick

version :thumb do
  process :resize_to_fit => [Cover::IMAGE_WIDTH, -1] # '-1' means that height is infinite (this is works for minimagick, but for rmagick it should be '10000').
  process :manual_crop
  process :resize_to_fill => [340, 191]
end

version :big do
  process :resize_to_fit => [Cover::IMAGE_WIDTH, -1]
  process :manual_crop
  process :resize_to_fill => [Cover::IMAGE_WIDTH, Cover::IMAGE_HEIGHT]
end

def manual_crop
  return if model.crop_coords.blank?
  manipulate! do |img|
    img.crop "#{model.crop_coords['w'].to_i}x#{model.crop_coords['h'].to_i}+#{model.crop_coords['x'].to_i}+#{model.crop_coords['y'].to_i}!"
    img
  end
end