1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
require 'cgi'
require 'erb'
module ActionView
module Helpers
# This is poor man's Builder for the rare cases where you need to programmatically make tags but can't use Builder.
module TagHelper
include ERB::Util
# Examples:
# * <tt>tag("br") => <br /></tt>
# * <tt>tag("input", { "type" => "text"}) => <input type="text" /></tt>
def tag(name, options = {}, open = false)
"<#{name}#{tag_options(options)}" + (open ? ">" : " />")
end
# Examples:
# * <tt>content_tag("p", "Hello world!") => <p>Hello world!</p></tt>
# * <tt>content_tag("div", content_tag("p", "Hello world!"), "class" => "strong") => </tt>
# <tt><div class="strong"><p>Hello world!</p></div></tt>
def content_tag(name, content, options = {})
"<#{name}#{tag_options(options)}>#{content}</#{name}>"
end
# Returns an image tag converting the +options+ instead html options on the tag, but with these special cases:
#
# * <tt>:alt</tt> - If no alt text is given, the file name part of the +src+ is used (capitalized and without the extension)
# * <tt>:size</tt> - Supplied as "XxY", so "30x45" becomes width="30" and height="45"
#
# The +src+ can be supplied as a...
# * full path, like "/my_images/image.gif"
# * file name, like "rss.gif", that gets expanded to "/images/rss.gif"
# * file name without extension, like "logo", that gets expanded to "/images/logo.png"
def image_tag(src, options = {})
options.symbolize_keys
options.update({ :src => src.include?("/") ? src : "/images/#{src}" })
options[:src] += ".png" unless options[:src].include?(".")
options[:alt] ||= src.split("/").last.split(".").first.capitalize
if options[:size]
options[:width], options[:height] = options[:size].split("x")
options.delete :size
end
tag("img", options)
end
private
def tag_options(options)
unless options.empty?
options.symbolize_keys
" " + options.map { |key, value|
%(#{key}="#{html_escape(value.to_s)}")
}.sort.join(" ")
end
end
end
end
end
|
