method
index_name_for_remove
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Class: ActiveRecord::ConnectionAdapters::SchemaStatements
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index_name_for_remove(table_name, options = {})
protected
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# File activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb, line 990 def index_name_for_remove(table_name, options = {}) index_name = index_name(table_name, options) unless index_name_exists?(table_name, index_name, true) if options.is_a?(Hash) && options.has_key?(:name) options_without_column = options.dup options_without_column.delete :column index_name_without_column = index_name(table_name, options_without_column) return index_name_without_column if index_name_exists?(table_name, index_name_without_column, false) end raise ArgumentError, "Index name '#{index_name}' on table '#{table_name}' does not exist" end index_name end