class method `self.precompile_filters`

Ruby on Rails 8.0.4

Since v7.1.6

Available in: v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

self.precompile_filters(filters)

Precompiles an array of filters that otherwise would be passed directly to #initialize. Depending on the quantity and types of filters, precompilation can improve filtering performance, especially in the case where the ParameterFilter instance itself cannot be retained (but the precompiled filters can be retained).

filters = [/foo/, :bar, "nested.baz", /nested\.qux/]

precompiled = ActiveSupport::ParameterFilter.precompile_filters(filters)
# => [/(?-mix:foo)|(?i:bar)/, /(?i:nested\.baz)|(?-mix:nested\.qux)/]

ActiveSupport::ParameterFilter.new(precompiled)

Parameters

filters req

Source

# File activesupport/lib/active_support/parameter_filter.rb, line 55
    def self.precompile_filters(filters)
      filters, patterns = filters.partition { |filter| filter.is_a?(Proc) }

      patterns.map! do |pattern|
        pattern.is_a?(Regexp) ? pattern : "(?i:#{Regexp.escape pattern.to_s})"
      end

      deep_patterns = patterns.extract! { |pattern| pattern.to_s.include?("\\.") }

      filters << Regexp.new(patterns.join("|")) if patterns.any?
      filters << Regexp.new(deep_patterns.join("|")) if deep_patterns.any?

      filters
    end

Defined in activesupport/lib/active_support/parameter_filter.rb line 55 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveSupport::ParameterFilter

Signature

Parameters