如何用ostrio:files删除Meteor中程序化上传的图片？

Hey there, I’ve used ostrio:files in several projects, so I can help you out with deleting programmatically uploaded/inserted images. The official docs don’t spell this out super clearly, but here’s how you can do it:

• Grab your Files Collection instance
  First, make sure you have access to the Files Collection you created (e.g., if you initialized it as const Images = new FilesCollection({...}), use that Images variable).

• Find the target file record
  You need to locate the document for the file you want to delete in your Files Collection. Use standard MongoDB queries to find it—either by its _id or any custom metadata you added during upload:

  // Find by file ID
  const targetFile = Images.findOne('your-file-id-here');
  
  // Or find by custom meta property
  const targetFile = Images.findOne({ meta: { uploadSource: 'programmatic' } });
  

• Delete the file (record + storage)
  Once you have the file document, call the built-in remove() method on it. This handles both deleting the file from your storage backend (local disk, S3, etc.) and removing the corresponding record from MongoDB:

  if (targetFile) {
    targetFile.remove();
  }
  

• Batch delete multiple files
  If you need to delete a group of files, loop through the query results and call remove() on each entry. This ensures both records and storage files are deleted:

  // Delete all files with a specific meta tag
  Images.find({ meta: { category: 'deprecated' } }).forEach(file => {
    file.remove();
  });
  

A quick note: Double-check your Files Collection's allow/deny rules. If you’re running this code on the server, permissions are typically open by default, but client-side deletions will require explicit allow rules for delete operations.

内容的提问来源于stack exchange，提问作者Who Knows