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JavaScript

Posted by Joseph Smith
Joseph Smith
Courses Plus Student 1,297 Points

How can I make a callback in CoffeeScript

I have this little bit of code mixed in with node.js and it allows me to create an unordered list of the directory. What I want is for the parent looping function to pause and wait for the child loop to finish and then continue with the code.

This is my code:

listFolders = (dir, callback) ->
  readDir = "#{__dirname}/public/#{dir}"
  fs.readdir readDir, (err, files) ->
    async.forEach files, (file, callback) ->
      dirname = file
      path = "#{dir}/#{file}"
      readPath = "#{readDir}/#{file}"

      fs.stat readPath, (err, stat) ->
        if stat && stat.isDirectory()
          console.log "<li class='folder' data-path='#{dir}' data-name='#{dir}/#{dirname}'><span>#{dirname}</span><ul>"
          listFolders path, () ->
            console.log "</ul></li>"
            callback()
        else if stat && stat.isFile()
          console.log "<li class='file' data-path='#{dir}' data-filename='#{dirname}'><span>#{dirname}</span></li>"
          callback()
  , callback

as you can see I am trying to apply a call back method but the console log is never run, nor did it pause my code.

my output is: 

<li class='file' data-path='/user_projects/1' data-filename='.DS_Store'><span>.DS_Store</span></li>
<li class='folder' data-path='/user_projects/1' data-name='/user_projects/1/assets'><span>assets</span><ul>
<li class='file' data-path='/user_projects/1' data-filename='index.html'><span>index.html</span></li>
<li class='folder' data-path='/user_projects/1/assets' data-name='/user_projects/1/assets/css'><span>css</span><ul>
<li class='file' data-path='/user_projects/1/assets' data-filename='test.php'><span>test.php</span></li>
<li class='file' data-path='/user_projects/1/assets/css' data-filename='main.css'><span>main.css</span></li>

and it should be:

<li class='file' data-path='/user_projects/1' data-filename='.DS_Store'><span>.DS_Store</span></li>
<li class='folder' data-path='/user_projects/1' data-name='/user_projects/1/assets'><span>assets</span><ul>
    <li class='folder' data-path='/user_projects/1/assets' data-name='/user_projects/1/assets/css'><span>css</span><ul>
          <li class='file' data-path='/user_projects/1/assets/css' data-filename='main.css'><span>main.css</span></li>
    </ul></li>
    <li class='file' data-path='/user_projects/1/assets' data-filename='test.php'><span>test.php</span></li>
</ul></li>
<li class='file' data-path='/user_projects/1' data-filename='index.html'><span>index.html</span></li>