Prawn ruby link annotation,Ruby select note

Text Annotation - Pdf

Pdf(Portable document format) has beautiful feature called text annotation. you can add detailed text information with available clipped images

Available annotations in current pdf spec are :

Text Annotation - Prawn

Via prawn you can define Text annotations easily. A convenience method for creating Text annotations. rect must be an array of four numbers, describing the bounds of the annotation. contents should be a string, to be shown when the annotation is activated.

Text annotation by Code - Sample: {% highlight ruby %} prawn_pdf = Prawn::Document.new prawn_pdf.text_annotation(rect, contents, options = {}) {% endhighlight %}

Ruby Select Quick note

if we need to grep some strings from an array with a defined pattern, it is advisable to use select. and this is how i used it.

{% highlight ruby %} array = [‘dhhjdfshgd’, ‘sadsdhjgsfgdhf ‘, ‘example@gmail.com’] array.select {|item| item[/\A([^@\s]+)@((?:[-a-z0-9]+.)+[a-z]{2,})\Z/i]} {% endhighlight %}

Quite useful for me.

And if you get stuck… Ask Here

^{email me rajeevsharma86@gmail.com}