Upload

This plugin allows you to upload files to Amazon S3 bucket.

Installation

npm i @adminforth/upload --save

S3

1. Go to https://aws.amazon.com and login.
2. Go to Services -> S3 and create a bucket. Put in bucket name e.g. my-reality-bucket. Leave all settings unchanged (ACL Disabled, Block all public access - checked)
3. Go to bucket settings, Permissions, scroll down to Cross-origin resource sharing (CORS) and put in the following configuration:

[
    {
        "AllowedHeaders": [
            "*"
        ],
        "AllowedMethods": [
            "PUT"
        ],
        "AllowedOrigins": [
            "http://localhost:3500"
        ],
        "ExposeHeaders": []
    }
]

☝️ In AllowedOrigins add all your domains. For example if you will searve adming on https://example.com/admin you should add "https://example.com" to AllowedOrigins:

[
     "https://example.com",
     "http://localhost:3500"
]

Every character matters, so don't forget to add http:// or https://!

4. Go to Services -> IAM and create a new user. Put in user name e.g. my-reality-user.
5. Attach existing policies directly -> AmazonS3FullAccess. Go to your user -> Add permissions -> Attach policies directly -> AmazonS3FullAccess
6. Go to Security credentials and create a new access key. Save Access key ID and Secret access key.
7. Add credentials in your .env file:

.env

...
NODE_ENV=development 

AWS_ACCESS_KEY_ID=your_access_key_id
AWS_SECRET_ACCESS_KEY=your_secret_access_key

Add column to aparts resource configuration:

./index.ts

import UploadPlugin from '@adminforth/upload';
import { v4 as uuid } from 'uuid';

export const admin = new AdminForth({
  ...
  resourceId: 'aparts',
  columns: [
    ...
    {
      name: 'apartment_image',
      showIn: [], // You can set to ['list', 'show'] if you wish to show path column in list and show views
    }
    ...
  ],
  plugins: [
    ...
    new UploadPlugin({
      pathColumnName: 'apartment_image',
      s3Bucket: 'my-bucket', // ❗ Your bucket name
      s3Region: 'us-east-1', // ❗ Selected region
      s3AccessKeyId: process.env.AWS_ACCESS_KEY_ID,
      s3SecretAccessKey: process.env.AWS_SECRET_ACCESS_KEY,
      allowedFileExtensions: ['jpg', 'jpeg', 'png', 'gif', 'webm', 'webp'],
      maxFileSize: 1024 * 1024 * 20, // 5MB
      s3Path: ({originalFilename, originalExtension, contentType}) => 
            `aparts/${new Date().getFullYear()}/${uuid()}-${originalFilename}.${originalExtension}`,
      // You can use next to change preview URLs (if it is image) in list and show views
      preview: {
        showInList: true,
      }
    })
  ]
  
  ...

});

Add a column for storing the path to the file in the database, add this statement to the end of initDataBase function:

./index.ts

async function initDataBase() {
  ...
  // check column apartment_image in apartments table
  const columns = await db.prepare('PRAGMA table_info(apartments);').all();
  const columnExists = columns.some((c) => c.name === 'apartment_image');
  if (!columnExists) {
    await db.prepare('ALTER TABLE apartments ADD COLUMN apartment_image VARCHAR(255);').run();
  }
}

☝️ If you will try to set 'create' or 'edit' in showIn of column which defined by plugin.options.pathColumnName, plugin will still prevent column from showing in these views. This is because plugin will handle file upload and you should not allow user to set path manually.

This setup will upload files to S3 bucket with private ACL and save path to file (relative to bucket root) in apartment_image column.

Once you will go to show or list view of aparts resource you will see preview of uploaded file by using presigned temporary URLs which are generated by plugin.

If you want to draw such images in main non-admin app e.g. Nuxt, you should generate presigned URLs by yourself. Here is NodeJS an example of how to do it:

import AWS from 'aws-sdk';

const s3 = new AWS.S3({
  accessKeyId: process.env.AWS_ACCESS_KEY_ID,
  secretAccessKey: process.env.AWS_SECRET_ACCESS_KEY,
  region: 'us-east-1',
});

export async function getPresignedUrl(s3Path: string): Promise<string> {
  return s3.getSignedUrlPromise('getObject', {
    Bucket: 'my-bucket',
    Key: s3Path,
    Expires: 60 * 60, // 1 hour
  });
}

Alternatively you might want to make all objects public, let's consider how to do it.

S3 upload with public access

1. First of all go to your bucket settings, Permissions, scroll down to Block public access (bucket settings for this bucket) and uncheck all checkboxes.
2. Go to bucket settings, Permissions, Object ownership and select "ACLs Enabled" and "Bucket owner preferred" radio buttons.

Then you can change ACL in plugin configuration:

./index.ts

      new UploadPlugin({
        pathColumnName: 'apartment_image',
        s3Bucket: 'my-bucket',
        s3Region: 'us-east-1',
        s3AccessKeyId: process.env.AWS_ACCESS_KEY_ID,
        s3SecretAccessKey: process.env.AWS_SECRET_ACCESS_KEY,
        s3ACL: 'public-read',
        allowedFileExtensions: ['jpg', 'jpeg', 'png', 'gif', 'webm'],
        maxFileSize: 1024 * 1024 * 20, // 5MB
        s3Path: ({originalFilename, originalExtension, contentType}) => 
                  `aparts/${new Date().getFullYear()}/${uuid()}-${originalFilename}.${originalExtension}`,
        preview: {
            showInList: true,
        }
      })
      

Now every uploaded file will be public so in your custom app you can easily concatinate bucket URL with s3Path to get public URL:

export async function getPublicUrl(s3Path: string): string {
  return `https://my-bucket.s3.${region}.amazonaws.com/${s3Path}`
}

For preview in AdminForth plugin will still use presigned URLs, but you can change it by providing previewUrl function in plugin configuration:

./index.ts

  preview: {
      showInList: true,
      previewUrl: ({s3Path}) => `https://my-bucket.s3.us-east-1.amazonaws.com/${s3Path}`, 
  }

Make sure that you change "my-bucket" and "us-east-1" to your own settings.

Also you might want to put CDN in front of your bucket, for example CloudFlare. In this case we recommend route all AdminForth previews over CDN as well for faster worm up and better performance. If for example your domain is my-domain.com and you bucket has name static.my-domain.com you should change preview URL like this:

./index.ts

  preview: {
      showInList: true,
      previewUrl: ({s3Path}) => `https://my-bucket.s3.us-east-1.amazonaws.com/${s3Path}`,

      previewUrl: ({s3Path}) => `https://static.my-domain.com/${s3Path}`,
  }

Also you will have to enable static website hosting in your bucket settings and set index.html and error.html to empty strings.