b0ba8bb9e5
In looking at forem/forem#16787, it felt like we would benefit from a similar approach as we adopted for nullifying blank strings. This refactor helps pave the way for a "normalize_text_for" method (or some such thing; naming things is hard). This change also involved introducing a `describe` block into the associated spec.
35 lines
1.2 KiB
Ruby
35 lines
1.2 KiB
Ruby
# This module provides a method for generating a configurable before_validation
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# hook for cleaning up string attributes: all listed attributes will be
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# replaced with `nil` if they are blank.
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module StringAttributeCleaner
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# This method specifies the list of attributes that should be cleaned before
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# validation happens.
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#
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# @param attributes [Array<Symbol|String>]
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# @param on [Symbol] register the cleaning on the specified
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# ActiveRecord::Base callback
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#
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# @return [void]
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#
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# @example Defining a list of attributes to be cleaned
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# include StringAttributeCleaner.nullify_blanks_for(:attribute1, :attribute2)
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# include StringAttributeCleaner.nullify_blanks_for(:attribute1, :attribute2, on: :before_save)
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def self.nullify_blanks_for(*attributes, on: :before_validation)
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Module.new do
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define_singleton_method(:included) do |klass|
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return unless klass < ActiveRecord::Base
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klass.public_send(on, :nullify_blank_attributes)
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end
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define_method(:nullify_blank_attributes) do
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attributes.each do |attr|
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next unless respond_to?(attr)
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next if public_send(attr).present?
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public_send("#{attr}=", nil)
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end
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end
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end
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end
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end
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