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# File 'lib/acts_as_taggable_on/acts_as_taggable_on/core.rb', line 81
def tagged_with(tags, options = {})
tag_list = ActsAsTaggableOn::TagList.from(tags)
empty_result = scoped(:conditions => "1 = 0")
return empty_result if tag_list.empty?
joins = []
conditions = []
context = options.delete(:on)
owned_by = options.delete(:owned_by)
alias_base_name = undecorated_table_name.gsub('.','_')
quote = ActsAsTaggableOn::Tag.using_postgresql? ? '"' : ''
if options.delete(:exclude)
if options.delete(:wild)
tags_conditions = tag_list.map { |t| sanitize_sql(["#{ActsAsTaggableOn::Tag.table_name}.name #{like_operator} ? ESCAPE '!'", "%#{escape_like(t)}%"]) }.join(" OR ")
else
tags_conditions = tag_list.map { |t| sanitize_sql(["#{ActsAsTaggableOn::Tag.table_name}.name #{like_operator} ?", t]) }.join(" OR ")
end
conditions << "#{table_name}.#{primary_key} NOT IN (SELECT #{ActsAsTaggableOn::Tagging.table_name}.taggable_id FROM #{ActsAsTaggableOn::Tagging.table_name} JOIN #{ActsAsTaggableOn::Tag.table_name} ON #{ActsAsTaggableOn::Tagging.table_name}.tag_id = #{ActsAsTaggableOn::Tag.table_name}.#{ActsAsTaggableOn::Tag.primary_key} AND (#{tags_conditions}) WHERE #{ActsAsTaggableOn::Tagging.table_name}.taggable_type = #{quote_value(base_class.name)})"
elsif options.delete(:any)
if options.delete(:wild)
tags = ActsAsTaggableOn::Tag.named_like_any(tag_list)
else
tags = ActsAsTaggableOn::Tag.named_any(tag_list)
end
return scoped(:conditions => "1 = 0") unless tags.length > 0
taggings_context = context ? "_#{context}" : ''
taggings_alias = adjust_taggings_alias(
"#{alias_base_name[0..4]}#{taggings_context[0..6]}_taggings_#{sha_prefix(tags.map(&:name).join('_'))}"
)
tagging_join = "JOIN #{ActsAsTaggableOn::Tagging.table_name} #{taggings_alias}" +
" ON #{taggings_alias}.taggable_id = #{quote}#{table_name}#{quote}.#{primary_key}" +
" AND #{taggings_alias}.taggable_type = #{quote_value(base_class.name)}"
tagging_join << " AND " + sanitize_sql(["#{taggings_alias}.context = ?", context.to_s]) if context
conditions << tags.map { |t| "#{taggings_alias}.tag_id = #{t.id}" }.join(" OR ")
select_clause = "DISTINCT #{table_name}.*" unless context and tag_types.one?
joins << tagging_join
else
tags = ActsAsTaggableOn::Tag.named_any(tag_list)
return empty_result unless tags.length == tag_list.length
tags.each do |tag|
taggings_alias = adjust_taggings_alias("#{alias_base_name[0..11]}_taggings_#{sha_prefix(tag.name)}")
tagging_join = "JOIN #{ActsAsTaggableOn::Tagging.table_name} #{taggings_alias}" +
" ON #{taggings_alias}.taggable_id = #{quote}#{table_name}#{quote}.#{primary_key}" +
" AND #{taggings_alias}.taggable_type = #{quote_value(base_class.name)}" +
" AND #{taggings_alias}.tag_id = #{tag.id}"
tagging_join << " AND " + sanitize_sql(["#{taggings_alias}.context = ?", context.to_s]) if context
if owned_by
tagging_join << " AND " +
sanitize_sql([
"#{taggings_alias}.tagger_id = ? AND #{taggings_alias}.tagger_type = ?",
owned_by.id,
owned_by.class.base_class.to_s
])
end
joins << tagging_join
end
end
taggings_alias, tags_alias = adjust_taggings_alias("#{alias_base_name}_taggings_group"), "#{alias_base_name}_tags_group"
if options.delete(:match_all)
joins << "LEFT OUTER JOIN #{ActsAsTaggableOn::Tagging.table_name} #{taggings_alias}" +
" ON #{taggings_alias}.taggable_id = #{quote}#{table_name}#{quote}.#{primary_key}" +
" AND #{taggings_alias}.taggable_type = #{quote_value(base_class.name)}"
group_columns = ActsAsTaggableOn::Tag.using_postgresql? ? grouped_column_names_for(self) : "#{table_name}.#{primary_key}"
group = group_columns
having = "COUNT(#{taggings_alias}.taggable_id) = #{tags.size}"
end
scoped(:select => select_clause,
:joins => joins.join(" "),
:group => group,
:having => having,
:conditions => conditions.join(" AND "),
:order => options[:order],
:readonly => false)
end
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