Upload images to AWS S3 in rails application using aws-sdk

upload-images-s3-sdk-ruby

Using gem aws-sdk for a ror application for uploading images to s3
Uploading images to a fixed bucket with different folders for each object or application.
The s3 keeps a limitation on the number of buckets creattion whereas there is no
limitation for content inside a bucket.

This code will upload image for a user to s3 using aws-sdk gem. The bucket and the image uploaded are made public 
so that the images uploaded are directly accessible. The input it takes is the image complete path 
where it is present, folder in which it should be uploaded and user_id for whom it should 
be uploaded.

  def save_screenshot_to_s3(image_location, folder_name,user_id)
    service = AWS::S3.new(:access_key_id => ACCESS_KEY_ID,
                          :secret_access_key => SECRET_ACCESS_KEY)
    bucket_name = "app-images"
    if(service.buckets.include?(bucket_name))
      bucket = service.buckets[bucket_name]
    else
      bucket = service.buckets.create(bucket_name)
    end
    bucket.acl = :public_read
    key = folder_name.to_s + "/" + File.basename(image_location)
    s3_file = service.buckets[bucket_name].objects[key].write(:file => image_location)
    s3_file.acl = :public_read
    user = User.where(id: user_id).first
    user.image = s3_file.public_url.to_s
    user.save
  end    

Thanks dude, you saved my ass! Really appreciated

this rocks. thanks.

Method for aws-sdk v3

1. In bash (terminal) set ENV vars
   export AWS_ACCESS_KEY_ID='your_key_id'
export AWS_SECRET_ACCESS_KEY='your_secret_key'

2. code to upload
   require 'aws-sdk'
s3 = Aws::S3::Resource.new(region: 'us-east-2') #check your region in s3 dashboard
bucket = 'your_bucket_name'
name = File.basename('/path/to/file.jpg')
obj = s3.bucket(bucket).object(name)
obj.upload_file(image_location)
obj.public_url.to_s #returns public url of file at s3 server

If smth wrong check:
-region
-bucket_name and if it exists
-permissions in s3 dashboard
-CORS configuration, for example
<?xml version="1.0" encoding="UTF-8"?>
<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
<CORSRule>
<AllowedOrigin>http://localhost:3000</AllowedOrigin>
<AllowedMethod>GET</AllowedMethod>
<AllowedMethod>POST</AllowedMethod>
<AllowedMethod>PUT</AllowedMethod>
<AllowedHeader>*</AllowedHeader>
</CORSRule>
</CORSConfiguration>

  def save_image_to_s3
    image = "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEAYABgAAetc..."
    folder_name = 'downloadlinks'
    service = AWS::S3.new(:access_key_id => 'MyAccessKey',
                          :secret_access_key => 'MySecretKey')
    bucket_name = "MyBucketName"
    bucket = service.buckets[bucket_name]
    bucket.acl = :public_read
    key = folder_name.to_s + "/graph.png"
    s3_file = service.buckets[bucket_name].objects[key].write(:file => image)
    s3_file.acl = :public_read
  end 

it will return

<Errno::ENAMETOOLONG: File name too long @ rb_sysopen - data:image/jpeg;base64,/9

How can I upload base64 in the s3?

In case anyone else somehow winds up stuck here, as of version 3 of the ruby SDK you need to use Resource in order to directly access the bucket objects.
service = AWS::S3::Resource.new()

You can then access the bucket via service.bucket("bucket-name")

https://docs.aws.amazon.com/sdk-for-ruby/v3/api/Aws/S3/Resource.html

In case anyone else somehow winds up stuck here, as of version 3 of the ruby SDK you need to use Resource in order to directly access the bucket objects.
service = AWS::S3::Resource.new()

You can then access the bucket via service.bucket("bucket-name")

https://docs.aws.amazon.com/sdk-for-ruby/v3/api/Aws/S3/Resource.html

@chaos-a i'll check the new changes and will update.