Class: HTML::Pipeline::FlickrFilter

Inherits:
TextFilter
  • Object
show all
Defined in:
lib/html/pipeline/flickr/flickr_filter.rb

Overview

HTML Filter for converting flickr’s link into linkable image

Context options:

:flickr_maxwidth, flickr_minheight - representing maxwidth and maxheight in oembed format's params.
:flickr_link_attr - HTML attributes for the link that will be generated

Instance Method Summary collapse

Instance Method Details

#call ⇒ Object 



15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
 
# File 'lib/html/pipeline/flickr/flickr_filter.rb', line 15

def call
  regex = %r{https?://(www\.)?flickr\.com/photos/[^\s<]*}
  uri = URI("https://www.flickr.com/services/oembed")

  link_attr = context[:flickr_link_attr] || ""

  @text.gsub(regex) do |match|
    params = {
      url: match,
      format: :json,
      maxwidth: max_value(:width),
      maxheight: max_value(:height)
    }

    uri.query = URI.encode_www_form(params)

    response = JSON.parse(Net::HTTP.get(uri))

    %{<a href="#{match}" #{link_attr}><img src="#{response["url"]}" alt="#{response["title"]}" title="#{response["title"]}" /></a>}
  end
end