Class: ActiveSupport::ParameterFilter::CompiledFilter

Inherits:
Object
  • Object
show all
Defined in:
activesupport/lib/active_support/parameter_filter.rb

Overview

:nodoc:

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(regexps, deep_regexps, blocks, mask:) ⇒ CompiledFilter

Returns a new instance of CompiledFilter.


91
92
93
94
95
96
# File 'activesupport/lib/active_support/parameter_filter.rb', line 91

def initialize(regexps, deep_regexps, blocks, mask:)
  @regexps = regexps
  @deep_regexps = deep_regexps&.any? ? deep_regexps : nil
  @blocks = blocks
  @mask = mask
end

Instance Attribute Details

#blocksObject (readonly)

Returns the value of attribute blocks


89
90
91
# File 'activesupport/lib/active_support/parameter_filter.rb', line 89

def blocks
  @blocks
end

#deep_regexpsObject (readonly)

Returns the value of attribute deep_regexps


89
90
91
# File 'activesupport/lib/active_support/parameter_filter.rb', line 89

def deep_regexps
  @deep_regexps
end

#regexpsObject (readonly)

Returns the value of attribute regexps


89
90
91
# File 'activesupport/lib/active_support/parameter_filter.rb', line 89

def regexps
  @regexps
end

Class Method Details

.compile(filters, mask:) ⇒ Object


58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
# File 'activesupport/lib/active_support/parameter_filter.rb', line 58

def self.compile(filters, mask:)
  return lambda { |params| params.dup } if filters.empty?

  strings, regexps, blocks, deep_regexps, deep_strings = [], [], [], nil, nil

  filters.each do |item|
    case item
    when Proc
      blocks << item
    when Regexp
      if item.to_s.include?("\\.")
        (deep_regexps ||= []) << item
      else
        regexps << item
      end
    else
      s = Regexp.escape(item.to_s)
      if s.include?("\\.")
        (deep_strings ||= []) << s
      else
        strings << s
      end
    end
  end

  regexps << Regexp.new(strings.join("|"), true) unless strings.empty?
  (deep_regexps ||= []) << Regexp.new(deep_strings.join("|"), true) if deep_strings&.any?

  new regexps, deep_regexps, blocks, mask: mask
end

Instance Method Details

#call(params, parents = [], original_params = params) ⇒ Object


98
99
100
101
102
103
104
105
106
# File 'activesupport/lib/active_support/parameter_filter.rb', line 98

def call(params, parents = [], original_params = params)
  filtered_params = params.class.new

  params.each do |key, value|
    filtered_params[key] = value_for_key(key, value, parents, original_params)
  end

  filtered_params
end

#value_for_key(key, value, parents = [], original_params = nil) ⇒ Object


108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
# File 'activesupport/lib/active_support/parameter_filter.rb', line 108

def value_for_key(key, value, parents = [], original_params = nil)
  parents.push(key) if deep_regexps
  if regexps.any? { |r| r.match?(key.to_s) }
    value = @mask
  elsif deep_regexps && (joined = parents.join(".")) && deep_regexps.any? { |r| r.match?(joined) }
    value = @mask
  elsif value.is_a?(Hash)
    value = call(value, parents, original_params)
  elsif value.is_a?(Array)
    # If we don't pop the current parent it will be duplicated as we
    # process each array value.
    parents.pop if deep_regexps
    value = value.map { |v| value_for_key(key, v, parents, original_params) }
    # Restore the parent stack after processing the array.
    parents.push(key) if deep_regexps
  elsif blocks.any?
    key = key.dup if key.duplicable?
    value = value.dup if value.duplicable?
    blocks.each { |b| b.arity == 2 ? b.call(key, value) : b.call(key, value, original_params) }
  end
  parents.pop if deep_regexps
  value
end