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我问了问题 Module not found: Error: Can't resolve 'cropbox'
但我没有得到答案，所以我必须专注于更具体的问题并在 StackOverflow 中搜索，

所以我得到三个问题

1 rails 不加载cropbox.js

2 clopbox.js 无法导出cropbox 功能

3 fileUplod.js 无法导入cropbox 功能

这就是上述问题之一的结果

application.html.erb 的一部分：

<%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track': 'reload' %>
<%= stylesheet_pack_tag 'application', media: 'all', 'data-turbolinks-track': 'reload' %>
<%= javascript_pack_tag 'application' %>
<%= javascript_pack_tag 'cropbox' %>
<%= javascript_pack_tag 'fileUpload'%> #Here is deleted

结果，我故意不编译 fileUpload，rails 可以加载 clopbox.js 所以，我缩小了 2 个问题

有人愿意告诉我这些问题吗？

环境：

导轨 6.0.2 红宝石 2.5.3

应用程序/javascript/packs/fileUpload.js：

import clopbox from './packs/cropbox' **#Here is problem **



 uppy.on('upload-success', (file, response) => {
// retrieve uploaded file data
const uploadedFileData = response.body['data']

// set hidden field value to the uploaded file data so that it's submitted
// with the form as the attachment
hiddenInput.value = JSON.stringify(uploadedFileData)

cropbox(imagePreview, response.uploadURL, {
  onCrop(detail) {
    let fileData = JSON.parse(hiddenInput.value)
    fileData['metadata']['crop'] = detail
    hiddenInput.value = JSON.stringify(fileData)
  }
})
})

webpacker.yml：

  # Note: You must restart bin/webpack-dev-server for changes to take effect

 default: &default
 source_path: app/javascript
 source_entry_path: packs
 public_root_path: public
 public_output_path: packs
 cache_path: tmp/cache/webpacker
 check_yarn_integrity: false
 webpack_compile_output: true

# Additional paths webpack should lookup modules
# ['app/assets', 'engine/foo/app/assets']
resolved_paths: []

# Reload manifest.json on all requests so we reload latest compiled packs
cache_manifest: false

# Extract and emit a css file
extract_css: false

static_assets_extensions:
  - .jpg
  - .jpeg
  - .png
  - .gif
  - .tiff
  - .ico
  - .svg
  - .eot
  - .otf
  - .ttf
  - .woff
  - .woff2

extensions:
  - .mjs
  - .js
  - .sass
  - .scss
  - .css
  - .module.sass
  - .module.scss
  - .module.css
  - .png
  - .svg
  - .gif
  - .jpeg
  - .jpg

development:
 <<: *default
  compile: true

# Verifies that correct packages and versions are installed by inspecting package.json, yarn.lock, 
and 
node_modules
check_yarn_integrity: true

# Reference: https://webpack.js.org/configuration/dev-server/
  dev_server:
  https: false
  host: localhost
  port: 3035
  public: localhost:3035
  hmr: false
  # Inline should be set to true if using HMR
  inline: true
  overlay: true
  compress: true
  disable_host_check: true
  use_local_ip: false
  quiet: false
  pretty: false
  headers:
   'Access-Control-Allow-Origin': '*'
  watch_options:
  ignored: '**/node_modules/**'


test:
  <<: *default
  compile: true

# Compile test packs to a separate directory
public_output_path: packs-test

production:
<<: *default

# Production depends on precompilation of packs prior to booting for 
performance.
compile: false

 # Extract and emit a css file
 extract_css: true

 # Cache manifest.json for performance
  cache_manifest: true

应用程序/javascript/packs/cropbox.js：

 import 'cropperjs/dist/cropper.css'

import Cropper from 'cropperjs'

function cropbox(image, url, { onCrop }) {
image.src = url

new Cropper(image, {
 aspectRatio: 1,
 viewMode: 1,
 guides: false,
 autoCropArea: 1.0,
 background: false,
 zoomable: false,
 crop: event => onCrop(event.detail)
 })
 }

export default cropbox

form.html.erb

  <%= form_with model: @blog_form , url: user_blogs_path ,local: true do |f| 
  %>

  <div class="field">
  <%  f.label :title %>
  <%= f.text_field :title %>
  </div>

  <div class="field">
  <%  f.label :content %>
  <%= f.text_area :content %>
  </div>

  <div class="field ">
   <%  f.label :user_id %>
   <%= f.hidden_field :user_id, value: current_user.id %>
   </div>

   <div class ="field form-group">
   <%= f.fields_for  :photos, Photo.new do |photos_fileds|  %>

   <%= photos_fileds.label :image , class: "form-control" %>
   <%= photos_fileds.hidden_field :image,  class: "upload-data", value: 
   photos_fileds.object.cached_image_data %>
   <%= photos_fileds.file_field  :image , class: "form-control  ", id: 
   "select- 
   files"%><br/>
   <div class="image-preview">
    <img id="image" src="<%= photos_fileds.object.image_url(:medium) %>" 
     height="300" class="rounded"  >
    </div>

    <% end %>

    </div>

    <%= f.submit "create", class: "btn btn-primary" %>
    <% end %>

日志：

ERROR in ./app/javascript/packs/fileUpload.js
Module not found: Error: Can't resolve './packs/cropbox' in 
'/home/master/prot/prottype2/app/javascript/packs'
@ ./app/javascript/packs/fileUpload.js 1:0-38

[Webpacker] Everything's up-to-date. Nothing to do
[Webpacker] Everything's up-to-date. Nothing to do
Completed 200 OK in 39733ms (Views: 39715.1ms | ActiveRecord: 0.6ms | Allocations: 1
4

1 回答 1

0

不知何故我可以加载cropbox，我不知道这个解决方案是什么正确的解决方案但我会写答案以防万一

我在 webpacker.yml 中添加了代码

resolved_paths: ['app/javascript/packs']
于 2020-05-26T14:00:29.550 回答