Module: Glue::Taggable::ClassMethods

Defined in:
lib/glue/taggable.rb

Instance Method Summary collapse

Instance Method Details

#find_with_any_tag(*names) ⇒ Object

Find objects with any of the provided tags. UNION (OR)



208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
 
# File 'lib/glue/taggable.rb', line 208

def find_with_any_tag(*names)
  relation = relations.reject{|r| r.name != :tags}.first
  info = ogmanager.store.join_table_info(relation)
  count = names.size
  names = names.map { |n| ogmanager.store.quote(n) }.join(',')
  sql = %{        
    SELECT *
    FROM #{info[:owner_table]} AS o
    WHERE o.oid IN (
      SELECT j.#{info[:owner_key]}
      FROM #{info[:target_table]} AS t
      JOIN #{info[:table]} AS j
      ON t.oid = j.#{info[:target_key]}
      WHERE (t.name IN (#{names}))
      GROUP BY j.#{info[:owner_key]}
      )
  }
  return self.select(sql)
end

#find_with_tags(*names) ⇒ Object Also known as: find_with_tag

Find objects with all of the provided tags. INTERSECTION (AND)



183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
 
# File 'lib/glue/taggable.rb', line 183

def find_with_tags(*names)
  relation = relations.reject{|r| r.name != :tags}.first
  info = ogmanager.store.join_table_info(relation)
  count = names.size
  names = names.map { |n| ogmanager.store.quote(n) }.join(',')
  sql = %{
    SELECT *
    FROM #{info[:owner_table]} AS o
    WHERE o.oid IN (
      SELECT j.#{info[:owner_key]}
      FROM #{info[:target_table]} AS t
      JOIN #{info[:table]} AS j
      ON t.oid = j.#{info[:target_key]}
      WHERE (t.name IN (#{names}))
      GROUP BY j.#{info[:owner_key]}
      HAVING COUNT(j.#{info[:owner_key]}) = #{count}
    )
  }
  return self.select(sql)
end