CODEWITHSUNDEEP
ruby-on-railsimagemagickrails-activestorage
Vadim Sergeevich
Vadim Sergeevich

Reputation: 153

ActiveStorage variant composite

I need to add watermarks to images, cmd ImageMagick command

convert image.png watermark.png -composite target.jpg

or

composite -watermark 30% -tile watermark.png image.png target.jpg

How can I do this operation with ActiveStorage::Variant?

Upvotes: 3

Views: 1067

Answers (3)

Sneeu Leeu
Sneeu Leeu

Reputation: 1

I got this to work by adding a constant with the path to the image in the model, and using the draw_over option with variant.

Model.rb

WATERMARK_PATH = "#{Rails.root}/public/images/watermark.png"

View.erb

<div class="carousel-item ">
      <%= image_tag image.variant(resize: "400x400", combine_options: { gravity: 'center', draw: 'image Over 0,0 0,0 "' + Unit::WATERMARK_PATH.to_s + '"' })%>
</div>

Upvotes: 0

Kulikov Dmitrii
Kulikov Dmitrii

Reputation: 41

Try this:

def medium_img_watermark
    if self.img_first.attached?
      self.img_first.variant(resize: '1200', quality: 75, density: 96,
                             combine_options: {
                              gravity: 'center',
                              draw: 'image Over 0,0 0,0 "public/logo_white.png"'
                            }).processed
    end
  end

Upvotes: 2

Prometheus
Prometheus

Reputation: 889

Add simply the gem 'mini_magick', install and follow their instructions.

ActiveStorage will then have access to the API, which you can find here:

https://www.imagemagick.org/script/mogrify.php

Inside active storage, you can access the API like so:

<%= image_tag image.variant(resize: "500x500", monochrome: true) %>

Greetings

Upvotes: 0

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