Module: ImgGravatar

Defined in:
lib/img_gravatar.rb

Overview

ImgGravatar

Adds the gravatar method to ActionViews.

Defined Under Namespace

Modules: Base, ClassMethods, InstanceMethods

Constant Summary collapse

@@gravatar_host = 
'www.gravatar.com'
@@gravatar_base_url = 
"http://#{@@gravatar_host}/avatar"
@@default_img_url = 
'/img/no_gravatar.png'
@@minimum_size = 
1
@@maximum_size = 
512
@@default_size = 
80
@@default_rating = 
'g'

Class Method Summary collapse

Class Method Details

.encode_md5(email) ⇒ Object

encode an EMail for Gravatar. This will basically take any string, strip is, and hash the result using MD5.



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# File 'lib/img_gravatar.rb', line 92

def self.encode_md5(email)
  value = email.downcase.strip
  case DIGEST_INTERFACE
    when :ruby18
      return MD5.md5(value)
    when :ruby19
      return Digest::MD5.hexdigest(value)
    else
      raise "unknown Ruby Digest interface."
  end
end

.image_url(email, opts = {}) ⇒ Object

get the default Gravatar image. options:

:default_url  - the default URL for this gravatar
:size         - the requested gravatar size
:rating       - the requested maximum rating



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# File 'lib/img_gravatar.rb', line 68

def self.image_url(email, opts={})
  appender = '?'
  
  # now, load infos from options
  default_img_url = check_default_opt(opts[:default_url])
  size = check_size_opt(opts[:size] )
  rating = check_rating_opt(opts[:rating])
  
  query = nil
  query = "s=%s" % size if size
  query = query ? "%s&r=%s" % [query, rating] : "r=%s" % rating if rating
  query = query ? "%s&d=%s" % [query, default_img_url] : "d=%s" % default_img_url if default_img_url
  
  query = URI.escape(query) if query
  
  #uri = URI::HTTP.new(Gravatar.gravatar_base_url)
  uri = URI::HTTP.build(:host => ImgGravatar.gravatar_host,
    :path => "/avatar/%s" % encode_md5(email),
    :query => query)
end

.link_gravatar(email, opts = {}) ⇒ Object

get the Gravatar image. options:

:alt          - the alternative text for this image (img attribute)
:default_url  - the default URL for this gravatar
:size         - the requested gravatar size (img attribute, gravatar-attribute)
:rating       - the requested maximum rating



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# File 'lib/img_gravatar.rb', line 48

def self.link_gravatar(email, opts={})
  # the defaults
  tag_options = {}
  tag_options[:alt] =opts[:alt]   if opts[:alt]
  tag_options[:size] =opts[:size] if opts[:size] && (opts[:size] >= 1 && opts[:size] <= 512)

  unless tag_options.empty?
    attributes = tag_options.collect {|key, value| "#{key}=\"#{value}\"" }.join(" ")
    "<img src=\"%s\" %s />" % [image_url(email, opts), attributes]
  else
    "<img src=\"%s\" />" % image_url(email, opts)
  end
end