我安装了回形针 - > 5.1和Windows 7上的最新ImageMagick(是的......我知道)运行Ruby 2.3.3和Rails 5.1.4。
我按照回形针说明的建议安装了file.exe,并将“C:\ Program Files(x86)\ GnuWin32 \ bin”添加到了我的路径中。
当我上传图片时,我收到以下错误:
ActionController::RoutingError (No route matches [GET] "/images/medium/missing.png"):
当我尝试查看显示页面以查看图像时,我收到以下错误:
ActionController::RoutingError (No route matches [GET] "/system/recipes/images/000/000/005/medium/Capture777.PNG"):
您能否就如何正确上传图片并进行展示给我指导?我假设错误会给出一些输入。我试图关注其他SO文章但到目前为止没有任何帮助。
这是我的routes.rb
Rails.application.routes.draw do
resources :recipes
root "recipes#index"
end
这是我的控制器show / new actions和find_recipe params
def show
@recipe = find_recipe
end
def new
@recipe = Recipe.new
end
private
def find_recipe
@recipe = Recipe.find(params[:id])
end
def recipe_params
params.require(:recipe).permit(:title, :description, :image)
end
这是我的模特
class Recipe < ApplicationRecord
has_attached_file :image, style: { :medium => "400x400#" }
validates_attachment_content_type :image, content_type: /\Aimage\/.*\z/
end
这是我的show.html.haml
= image_tag @recipe.image.url(:medium, class: "recipe_image")
%h1= @recipe.title
%p= @recipe.description
= link_to 'Back', root_path, class: 'btn btn-info'
= link_to 'Edit', edit_recipe_path, class: 'btn btn-primary'
= link_to 'Delete',recipe_path, method: :delete, data: { confirm: 'Are you sure?' }, class: 'btn btn-danger'
这是我的_form.html.haml
= simple_form_for @recipe, html: { multipart: true } do |f|
- if @recipe.errors.any?
#errors
%p
= @recipe.errors.count
Prevented this recipe from saving
%ul
- @recipe.errors.full_messages.each do |msg|
%li = msg
.panel-body
= f.input :title, input_html: { class: 'form-control' }
= f.input :description, input_html: { class: 'form-control' }
= f.file_field :image, input_html: { class: 'form-control' }
= f.button :submit, class: 'btn btn-primary'
答案 0 :(得分:1)
问题在于您尝试使用样式选项的方式,它必须是styles
,替换它并重试:
class Recipe < ApplicationRecord
has_attached_file :image, styles: { medium: '400x400#' }
validates_attachment_content_type :image, content_type: /\Aimage\/.*\z/
end
这使得Paperclip只执行命令:
Command :: file -b --mime
开始交易Command :: file -b --mime
创建副本代替:
Command :: file -b --mime
Command :: identify -format
Command :: identify -format %m
Command :: convert
Command :: file -b --mime
因此,您无法通过:medium
样式获取图像,但您可以访问其网址并通过图片标记显示该图像,但样式将无效。