The plural model name comes from the Agile Development book. They have an example--categories_products, linking categories to products--which they turn into a model. Should it be renamed category_product? Or is categories_product correct? I'm a bit confused about this, so thanks for bringing it up.
I'll look around for the plugin. Thanks so much, Matt! John On Jun 29, 10:46 am, Matt Jones <[email protected]> wrote: > The :orthologs association is the problem - Rails doesn't support > nesting :through associations. I recall there being a plugin around > someplace to do it, so you may want to look into that. > > Depending on what you need, a simple instance method may work as well. > For example (on Gene): > > def orthologs > genes_orthogroups.ortholog_groups_for(self).map { |g| g.gene } > end > > On GenesOrthogroup: > named_scope ortholog_groups_for { |g| { :include => :gene, :conditions > => ['genes.species_id != ?', g.species_id] } } > > (not tested, but should be close to working) > > A couple general things: > > - model names should be singular (GenesOrthogroup rather than > GenesOrthogroups). Otherwise you'll eventually run into issues. > > - when writing SQL fragments in conditions, table names are plural (so > genes.whatever rather than gene.whatever). > > - the association macros have sensible defaults, so you can leave some > options out. For instance, the :species association in Gene can be > simplified to 'belongs_to :species' - Rails will find the correct FK > (species_id) and class (Species). > > --Matt Jones > > On Jun 28, 8:07 pm, John Woods <[email protected]> wrote: > > > has_many :genes_orthogroups, :class_name => 'GenesOrthogroups' # > > join table model > > has_many :orthogroups, :through => :genes_orthogroups > > has_many :orthologs, :through => :orthogroups, :source > > => :genes, :conditions => 'gene.species_id != ortholog.species_id' > > end --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
