module Sequel::Plugins::InvertedSubsets
The inverted_subsets plugin adds another method for each defined subset, which inverts the condition supplied. By default, inverted subset method names are prefixed with not_.
You can change the prefix, or indeed entirely customise the inverted names, by passing a block to the plugin configuration:
# Use an exclude_ prefix for inverted subsets instead of not_ Album.plugin(:inverted_subsets){|name| "exclude_#{name}"}
Usage:
# Add inverted subsets in the Album class Album.plugin :inverted_subsets # This will now create two methods, published and not_published Album.dataset_module do where :published, published: true end Album.published.sql # SELECT * FROM albums WHERE (published IS TRUE) Album.not_published.sql # SELECT * FROM albums WHERE (published IS NOT TRUE)
Public Class Methods
apply(mod, &block)
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# File lib/sequel/plugins/inverted_subsets.rb, line 32 def self.apply(mod, &block) mod.instance_exec do @dataset_module_class = Class.new(@dataset_module_class) do include DatasetModuleMethods if block define_method(:inverted_subset_name, &block) private :inverted_subset_name end end end end