Rails paperclip watermark position

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Rails paperclip watermark position

I did a quick search on Google and found this post by Job, a fellow Atom. Our use cases were a little bit different, though. I decided to use the Paperclip gem to manage the file processing and storage. Paperclip, as its name suggests, is a file attachment library for ActiveRecord.

It is designed to treat files much like other attributes, and it provides a whole slew of built-in extensions e.

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The setup is very simple, and getting the basics up and running takes only a few minutes. For the sake of this example, we will set up the ActiveRecord model, create a migration, and get rolling with the Active Admin file upload.

Install the Paperclip Gem Installing the gem is easy. In this case, I already had a table and a corresponding model for my firmware image, so I just needed to add a migration to add the columns that Paperclip requires.

The easiest way to do this is with the Rails migration generator: To add Paperclip support to your model, start by adding the following line to your model class: For our purposes, the defaults should be just fine. Paperclip also makes it really easy to perform powerful validations on the file.

If any validation fails, the file will not be saved to disk and the associon will be rolled back, just like any other ActiveRecord validation.

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There are built-in helpers to validate attachment presence, size, content type, and file name. In our case, we really just need to validate the file name to ensure that it had the proper format and also that it was a unique file name.

The following validation did the trick: Configure Active Admin for File Upload Now that Paperclip is all set up and wired into our Rails model, we need to actually set up the file upload piece in Active Admin.

Basically, all we need to do is: Define the Index page contents Enumerate which columns will be displayed. If any special decoration is required, such as customized column title, sort properties, or row formatting, they can be specified easily.

Note that the file path is stored in the image.

Rails paperclip watermark position

Create the upload form Use the f. The code snippet below is the Active Admin page, which allows the user to create, view, edit, and delete a firmware image. We now have a fully functional file-upload implementation using Active Admin backed by Paperclip.Auxiliary data. src/public/js/kaja-net.com This package implements a content management system with security features by default.

It provides a blog engine and a framework for Web application development. Its features include: Digitally signed automatic security updates - The community is always in control of any add-ons it produces - Supports a multi-site architecture out of the box - Designed. This is a simple Paperclip processor to apply watermarks on Paperclip's images.

The watermark will be resized to fit the base image. Few options are available to specify the position and it opacity. A dictionary file. dict_files/kaja-net.com This class can parse, analyze words and interprets sentences.

It takes an English sentence and breaks it into words to determine if it is a phrase or a clause. It can also counts the total number of words in a sentence, checks if a word is a palindrome and can generate a new sentence with almost the same meaning using synonyms and other. ruby-on-rails,ruby,file-upload,paperclip I'm trying to upload an image using Paperclip; I followed the paperclip quick start guide as closely as possible, but I'm doing something wrong and can't find out what.

I'm new to Ruby and Rails; the whole project is set up with the AngularJS framework. I'm wondering what strategies I can use to get this done or if there are some good gems around I can use.

Things I have thought of. Resizing the watermark image to 10% of the image size before placing it on top of the image (seems the best option right now).

convert: no encode delegate for this image format '/tmp/picture1 5c9 (target of the merged picture)' @ constitute.c/WriteImage/

11 Mar Best | Hackerbrain