method
change_column_null
v7.1.3.2 -
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Class: SchemaStatements
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change_column_null(table_name, column_name, null, default = nil)
public
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# File activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb, line 443 def change_column_null(table_name, column_name, null, default = nil) # :nodoc: validate_change_column_null_argument!(null) clear_cache! unless null || default.nil? column = column_for(table_name, column_name) execute "UPDATE #{quote_table_name(table_name)} SET #{quote_column_name(column_name)}=#{quote_default_expression(default, column)} WHERE #{quote_column_name(column_name)} IS NULL" if column end execute "ALTER TABLE #{quote_table_name(table_name)} ALTER COLUMN #{quote_column_name(column_name)} #{null ? 'DROP' : 'SET'} NOT NULL" end