Ires is image resizer gem.

<!-- Usually -->
<%= ires_tag(path: "image_01.jpg", width: 90, height: 120) %>

<!-- Using image_tag options -->
<%= ires_tag(path: "http://example.com/image_02.jpg", width: 200, height: 200, Ires::Mode::CROP, alt: "example image") %>

Ires::Service.path(path: '<FULL IMAGE PATH>', width: 400, height: 300)
=> /ires/<resize image path>

Filter of resize image.

Default: 30days

<%= ires_tag(path: '/image.jpg', width: 400, height: 300, expire: 7.days) %>

public
├── image.jpg
└── ires
    ├── crop
    │   ├── 20171019_image_120x90_crop.jpg
    │   ├── 20171117_image_200x200_crop.jpg
    │   └── 20171117_image_400x300_crop.jpg
    ├── resize
    │   ├── 20171019_image_120x90_resize.jpg
    │   ├── 20171117_image_200x200_resize.jpg
    │   └── 20171117_image_400x300_resize.jpg
    └── resize_to_crop
        ├── 20171019_image_120x90_resize_to_crop.jpg
        ├── 20171117_image_200x200_resize_to_crop.jpg
        └── 20171117_image_400x300_resize_to_crop.jpg

Parse URL & Create directory by parse URL.

Add this line to your application's Gemfile:

gem 'ires'

And then execute:

$ bundle

Or install it yourself as:

$ gem install ires

• It works only with linux and darwin now.
• Can build only linux（.so）in this docker.

Docker environment.

$ docker build -t ires:v1 .

# Into the ires container.
$ docker run -it -v $(pwd):/go/src/github.com/endotakuya/ires -p 3000:3000 ires:v1 /bin/bash

Working in ires container.

Package manager is dep.

# Dependent resolution
$ dep ensure

# Output to a shared object.
$ CGO_ENABLED=1 GOOS=linux go build -v -buildmode=c-shared -o shared/linux/ires.so ext/main.go

※ In the current Docker, you can build only linux environment. ※ If you want to build in other environments, add GCC or install Go on the host side.🙇

$ test/dummy/bin/rails s -b 0.0.0.0

The gem is available as open source under the terms of the MIT License.