blob: 7141ed7c9bd8e5569e7c72055af5bb11188b8970 (
plain)
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
|
require 'html/pipeline/filter'
module Banzai
module Filter
# HTML filter that removes references to records that the current user does
# not have permission to view.
#
# Expected to be run in its own post-processing pipeline.
#
class RedactorFilter < HTML::Pipeline::Filter
def call
Querying.css(doc, 'a.gfm').each do |node|
unless user_can_see_reference?(node)
# The reference should be replaced by the original text,
# which is not always the same as the rendered text.
text = node.attr('data-original') || node.text
node.replace(text)
end
end
doc
end
private
def user_can_see_reference?(node)
if node.has_attribute?('data-reference-filter')
reference_type = node.attr('data-reference-filter')
reference_filter = Banzai::Filter.const_get(reference_type)
reference_filter.user_can_see_reference?(current_user, node, context)
else
true
end
end
def current_user
context[:current_user]
end
end
end
end
|
