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author | Rick Olson <technoweenie@gmail.com> | 2008-03-26 15:36:17 +0000 |
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committer | Rick Olson <technoweenie@gmail.com> | 2008-03-26 15:36:17 +0000 |
commit | 1648208ab09277467220efc92a532994024eea78 (patch) | |
tree | e8f26e6b765abffc3250406efedc05b9b0981af3 /activerecord/lib/active_record/associations.rb | |
parent | 628ffad98bcf4087ef16e899868d41bf22aa77d2 (diff) | |
download | rails-1648208ab09277467220efc92a532994024eea78.tar.gz rails-1648208ab09277467220efc92a532994024eea78.tar.bz2 rails-1648208ab09277467220efc92a532994024eea78.zip |
Fix duplicate table alias error when including an association with a has_many :through association on the same join table. Closes #7310 [cavalle]
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@9095 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
Diffstat (limited to 'activerecord/lib/active_record/associations.rb')
-rwxr-xr-x | activerecord/lib/active_record/associations.rb | 52 |
1 files changed, 27 insertions, 25 deletions
diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index e420a8ec57..62c5adff52 100755 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -1727,36 +1727,19 @@ module ActiveRecord end super(reflection.klass) + @join_dependency = join_dependency @parent = parent @reflection = reflection @aliased_prefix = "t#{ join_dependency.joins.size }" - @aliased_table_name = table_name #.tr('.', '_') # start with the table name, sub out any .'s @parent_table_name = parent.active_record.table_name - - if !parent.table_joins.blank? && parent.table_joins.to_s.downcase =~ %r{join(\s+\w+)?\s+#{aliased_table_name.downcase}\son} - join_dependency.table_aliases[aliased_table_name] += 1 - end - - unless join_dependency.table_aliases[aliased_table_name].zero? - # if the table name has been used, then use an alias - @aliased_table_name = active_record.connection.table_alias_for "#{pluralize(reflection.name)}_#{parent_table_name}" - table_index = join_dependency.table_aliases[aliased_table_name] - join_dependency.table_aliases[aliased_table_name] += 1 - @aliased_table_name = @aliased_table_name[0..active_record.connection.table_alias_length-3] + "_#{table_index+1}" if table_index > 0 - else - join_dependency.table_aliases[aliased_table_name] += 1 + @aliased_table_name = aliased_table_name_for(table_name) + + if reflection.macro == :has_and_belongs_to_many + @aliased_join_table_name = aliased_table_name_for(reflection.options[:join_table], "_join") end - - if reflection.macro == :has_and_belongs_to_many || (reflection.macro == :has_many && reflection.options[:through]) - @aliased_join_table_name = reflection.macro == :has_and_belongs_to_many ? reflection.options[:join_table] : reflection.through_reflection.klass.table_name - unless join_dependency.table_aliases[aliased_join_table_name].zero? - @aliased_join_table_name = active_record.connection.table_alias_for "#{pluralize(reflection.name)}_#{parent_table_name}_join" - table_index = join_dependency.table_aliases[aliased_join_table_name] - join_dependency.table_aliases[aliased_join_table_name] += 1 - @aliased_join_table_name = @aliased_join_table_name[0..active_record.connection.table_alias_length-3] + "_#{table_index+1}" if table_index > 0 - else - join_dependency.table_aliases[aliased_join_table_name] += 1 - end + + if reflection.macro == :has_many && reflection.options[:through] + @aliased_join_table_name = aliased_table_name_for(reflection.through_reflection.klass.table_name, "_join") end end @@ -1893,6 +1876,25 @@ module ActiveRecord end protected + + def aliased_table_name_for(name, suffix = nil) + if !parent.table_joins.blank? && parent.table_joins.to_s.downcase =~ %r{join(\s+\w+)?\s+#{name.downcase}\son} + @join_dependency.table_aliases[name] += 1 + end + + unless @join_dependency.table_aliases[name].zero? + # if the table name has been used, then use an alias + name = active_record.connection.table_alias_for "#{pluralize(reflection.name)}_#{parent_table_name}#{suffix}" + table_index = @join_dependency.table_aliases[name] + @join_dependency.table_aliases[name] += 1 + name = name[0..active_record.connection.table_alias_length-3] + "_#{table_index+1}" if table_index > 0 + else + @join_dependency.table_aliases[name] += 1 + end + + name + end + def pluralize(table_name) ActiveRecord::Base.pluralize_table_names ? table_name.to_s.pluralize : table_name end |