class ScopedSearch::QueryBuilder::PostgreSQLAdapter
The PostgreSQLAdapter make sure that
searches are case sensitive when using the like/unlike operators, by using
the PostrgeSQL-specific ILIKE operator
instead of
LIKE
.
Public Instance Methods
order_by(order, &block)
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Calls superclass method
ScopedSearch::QueryBuilder#order_by
# File lib/scoped_search/query_builder.rb, line 549 def order_by(order, &block) sql = super(order, &block) if sql field, _ = find_field_for_order_by(order, &block) sql += sql.include?('DESC') ? ' NULLS LAST ' : ' NULLS FIRST ' if !field.nil? && field.column.null end sql end
sql_operator(operator, field)
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Switches out the default LIKE operator in the default
sql_operator
method for ILIKE or @@ if full text searching is
enabled.
Calls superclass method
ScopedSearch::QueryBuilder#sql_operator
# File lib/scoped_search/query_builder.rb, line 534 def sql_operator(operator, field) raise ScopedSearch::QueryNotSupported, "the operator '#{operator}' is not supported for field type '#{field.type}'" if [:like, :unlike].include?(operator) and !field.textual? return '@@' if [:like, :unlike].include?(operator) && field.full_text_search case operator when :like then 'ILIKE' when :unlike then 'NOT ILIKE' else super(operator, field) end end
sql_test(field, operator, value, lhs) { |:parameter, value| ... }
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Switches out the default query generation of the sql_test
method if full text searching is enabled and a text search is being
performed.
Calls superclass method
ScopedSearch::QueryBuilder#sql_test
# File lib/scoped_search/query_builder.rb, line 521 def sql_test(field, operator, value, lhs, &block) if [:like, :unlike].include?(operator) && field.full_text_search yield(:parameter, value) negation = (operator == :unlike) ? "NOT " : "" locale = (field.full_text_search == true) ? 'english' : field.full_text_search return "#{negation}to_tsvector('#{locale}', #{field.to_sql(operator, &block)}) #{self.sql_operator(operator, field)} to_tsquery('#{locale}', ?)" else super end end
to_not_sql(rhs, definition, &block)
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Returns a NOT (…) SQL fragment that negates the current AST node's children
# File lib/scoped_search/query_builder.rb, line 545 def to_not_sql(rhs, definition, &block) "NOT COALESCE(#{rhs.to_sql(self, definition, &block)}, false)" end