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# Active Vault
Active Vault makes it simple to upload and reference files in cloud sites, like Amazon S3 or Google Cloud Storage,
and attach those files to Active Records. It also provides a disk site for testing or local deployments, but the
focus is on cloud storage.
## Example
One attachment:
```ruby
class User < ApplicationRecord
has_one_attached :avatar
end
user.avatar.attach io: File.open("~/face.jpg"), filename: "avatar.jpg", content_type: "image/jpg"
user.avatar.exist? # => true
user.avatar.purge
user.avatar.exist? # => false
user.image.url(expires_in: 5.minutes) # => /rails/blobs/<encoded-key>
class AvatarsController < ApplicationController
def update
Current.user.avatar.attach(params.require(:avatar))
redirect_to Current.user
end
end
```
Many attachments:
```ruby
class Message < ApplicationRecord
has_many_attached :images
end
<%= form_with model: @message do |form| %>
<%= form.text_field :title, placeholder: "Title" %><br>
<%= form.text_area :content %><br><br>
<%= form.file_field :images, multiple: true %><br>
<%= form.submit %>
<% end %>
class MessagesController < ApplicationController
def create
message = Message.create! params.require(:message).permit(:title, :content)
message.images.attach(params[:message][:images])
redirect_to message
end
end
```
## Configuration
Add `require "active_vault"` to config/application.rb and create a `config/initializers/active_vault_sites.rb` with the following:
```ruby
```
## License
Active Vault is released under the [MIT License](https://opensource.org/licenses/MIT).
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