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PORails has_many :through using same table twice
 

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  1. PORails has_many :through using same table twice
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    <p>I am having issues getting my Model relationships set up correctly. I have the following classes:</p> <p><strong>personal_portfolio.rb</strong></p> <pre><code>class PersonalPortfolio &lt; Portfolio has_many :user_stake_in_portfolios, :foreign_key =&gt; :possession_id belongs_to :owner, :class_name =&gt; 'User' has_many :managers, :through =&gt; :user_stake_in_portfolios, :source =&gt; :user has_many :company_permissions, :foreign_key =&gt; :owner_id has_many :company_permissions_as_viewer, :class_name =&gt; 'CompanyPermission', :foreign_key =&gt; :owner_id, :conditions =&gt; 'can_view_info = true || can_edit_cap_table = true || can_view_key_metric = true || can_view_all_metrics = true || can_view_cap_table = true || can_edit_managers = true || can_edit_info = true || can_edit_metrics = true' has_many :companies_as_viewer, :class_name =&gt; 'Company', :through =&gt; :company_permissions_as_viewer, :source =&gt; :entity has_many :company_permissions_as_manager, :class_name =&gt; 'CompanyPermission', :foreign_key =&gt; :owner_id, :conditions =&gt; { :can_edit_managers =&gt; true } has_many :companies_as_manager, :class_name =&gt; 'Company', :through =&gt; :company_permissions_as_manager, :source =&gt; :entity has_many :portfolio_permissions, :foreign_key =&gt; :owner_id has_many :portfolio_permissions_as_viewer, :class_name =&gt; 'PortfolioPermission', :foreign_key =&gt; :owner_id, :conditions =&gt; 'can_view_info = true || can_edit_cap_table = true || can_view_key_metric = true || can_view_all_metrics = true || can_view_cap_table = true || can_edit_managers = true || can_edit_info = true || can_edit_metrics = true' has_many :portfolios_as_viewer, :class_name =&gt; 'Portfolio', :through =&gt; :portfolio_permissions_as_viewer, :source =&gt; :entity has_many :portfolio_permissions_as_manager, :class_name =&gt; 'PortfolioPermission', :foreign_key =&gt; :owner_id, :conditions =&gt; { :can_edit_managers =&gt; true } has_many :portfolios_as_manager, :class_name =&gt; 'GroupPortfolio', :through =&gt; :portfolio_permissions_as_manager, :source =&gt; :entity after_create :add_manager ... end </code></pre> <p><strong>user.rb</strong></p> <pre><code>class User &lt; ActiveRecord::Base ... has_many :user_stake_in_portfolios, foreign_key: :owner_id has_many :portfolios, through: :user_stake_in_portfolios has_many :personal_portfolios, through: :user_stake_in_portfolios, :class_name =&gt; 'PersonalPortfolio', :source =&gt; :portfolio, :conditions =&gt; { :type =&gt; 'PersonalPortfolio' } has_many :companies, through: :portfolios, source: :portfolio_companies, class_name: 'Company' has_many :managed_portfolios, :through =&gt; :personal_portfolios, :source =&gt; :portfolios_as_manager has_many :viewable_portfolios, :through =&gt; :personal_portfolios, :source =&gt; :portfolios_as_viewer has_many :managed_companies, :through =&gt; :personal_portfolios, :source =&gt; :companies_as_manager has_many :viewable_companies, :through =&gt; :personal_portfolios, :source =&gt; :companies_as_viewer ... end </code></pre> <p>What is strange is that if I run the command <code>User.find(3).personal_portfolios.first.portfolios_as_viewer</code> I get the results I expect (3 portfolios). But the issue is when I then try <code>User.find(3).viewable_portfolios</code>, I only get 1 portfolio (which is 1 of the three). User.<code>viewable_portfolios</code> is a <code>has_many :through</code> using <code>PersonalPortfolio.portfolios_as_viewer</code> as the source.</p> <p>When looking at the query produced by the second command, you can see that it is using the <code>portfolios</code> table twice:</p> <pre><code>SELECT `portfolios`.* FROM `portfolios` INNER JOIN `permissions` ON `portfolios`.`id` = `permissions`.`entity_id` INNER JOIN `portfolios` `personal_portfolios_viewable_portfolios_join` ON `permissions`.`owner_id` = `personal_portfolios_viewable_portfolios_join`.`id` INNER JOIN `stakes` ON `personal_portfolios_viewable_portfolios_join`.`id` = `stakes`.`possession_id` WHERE `permissions`.`type` IN ( 'PortfolioPermission' ) AND `portfolios`.`type` IN ( 'PersonalPortfolio' ) AND `stakes`.`type` IN ( 'UserStakeInPortfolio' ) AND `stakes`.`owner_id` = 3 AND ( can_view_info = true || can_edit_cap_table = true || can_view_key_metric = true || can_view_all_metrics = true || can_view_cap_table = true || can_edit_managers = true || can_edit_info = true || can_edit_metrics = true ) AND ( `personal_portfolios_viewable_portfolios_join`.`type` = 'PersonalPortfolio' ) </code></pre> <p>It's strange to me because <code>User.find(3).managed_portfolios == User.find(3).personal_portfolios.first.portfolios_as_manager</code> returns true while <code>User.find(3).viewable_portfolios == User.find(3).personal_portfolios.first.portfolios_as_viewer</code> returns false. And companies work just fine (though not indicative of the right relationships as the dependencies/data vary) though the relationships look to be the same.</p> <p><strong>The Question</strong> How can I get <code>User.find(3).viewable_portfolios</code> return the same as <code>User.find(3).personal_portfolios.first.portfolios_as_viewer</code>?</p> <p><strong>Helpful Outputs</strong></p> <pre><code>1.9.3-p362 :122 &gt; User.find(3).viewable_portfolios User Load (0.8ms) SELECT `users`.* FROM `users` WHERE `users`.`id` = 3 LIMIT 1 Portfolio Load (1.1ms) SELECT `portfolios`.* FROM `portfolios` INNER JOIN `permissions` ON `portfolios`.`id` = `permissions`.`entity_id` INNER JOIN `portfolios` `personal_portfolios_viewable_portfolios_join` ON `permissions`.`owner_id` = `personal_portfolios_viewable_portfolios_join`.`id` INNER JOIN `stakes` ON `personal_portfolios_viewable_portfolios_join`.`id` = `stakes`.`possession_id` WHERE `permissions`.`type` IN ('PortfolioPermission') AND `portfolios`.`type` IN ('PersonalPortfolio') AND `stakes`.`type` IN ('UserStakeInPortfolio') AND `stakes`.`owner_id` = 3 AND (can_view_info = true || can_edit_cap_table = true || can_view_key_metric = true || can_view_all_metrics = true || can_view_cap_table = true || can_edit_managers = true || can_edit_info = true || can_edit_metrics = true) AND (`personal_portfolios_viewable_portfolios_join`.`type` = 'PersonalPortfolio') =&gt; [#&lt;PersonalPortfolio id: 3, name: "Manager Man's portfolio", established: "2013-09-24", created_at: "2013-09-24 23:20:34", updated_at: "2013-09-24 23:20:34", type: "PersonalPortfolio", base_capital_invested: nil, total_shares: nil, logo_file_name: nil, logo_content_type: nil, logo_file_size: nil, logo_updated_at: nil, city: nil, state: nil, invited_manager_email: nil, claim_code: nil, angellist_url: nil, facebook_url: nil, linkedin_url: nil, twitter_url: nil, website_url: nil, longitude: nil, latitude: nil, is_single_use_fund: false, tagline: nil, thumb_file_name: nil, thumb_content_type: nil, thumb_file_size: nil, thumb_updated_at: nil, use_committed_capital: true, owner_id: 3&gt;] 1.9.3-p362 :123 &gt; User.find(3).viewable_portfolios.count User Load (0.9ms) SELECT `users`.* FROM `users` WHERE `users`.`id` = 3 LIMIT 1 (2.2ms) SELECT COUNT(*) FROM `portfolios` INNER JOIN `permissions` ON `portfolios`.`id` = `permissions`.`entity_id` INNER JOIN `portfolios` `personal_portfolios_viewable_portfolios_join` ON `permissions`.`owner_id` = `personal_portfolios_viewable_portfolios_join`.`id` INNER JOIN `stakes` ON `personal_portfolios_viewable_portfolios_join`.`id` = `stakes`.`possession_id` WHERE `permissions`.`type` IN ('PortfolioPermission') AND `portfolios`.`type` IN ('PersonalPortfolio') AND `stakes`.`type` IN ('UserStakeInPortfolio') AND `stakes`.`owner_id` = 3 AND (can_view_info = true || can_edit_cap_table = true || can_view_key_metric = true || can_view_all_metrics = true || can_view_cap_table = true || can_edit_managers = true || can_edit_info = true || can_edit_metrics = true) AND (`personal_portfolios_viewable_portfolios_join`.`type` = 'PersonalPortfolio') =&gt; 1 1.9.3-p362 :124 &gt; User.find(3).personal_portfolios.first.portfolios_as_viewer User Load (0.9ms) SELECT `users`.* FROM `users` WHERE `users`.`id` = 3 LIMIT 1 PersonalPortfolio Load (0.8ms) SELECT `portfolios`.* FROM `portfolios` INNER JOIN `stakes` ON `portfolios`.`id` = `stakes`.`possession_id` WHERE `stakes`.`type` IN ('UserStakeInPortfolio') AND `portfolios`.`type` IN ('PersonalPortfolio') AND `stakes`.`owner_id` = 3 AND (`portfolios`.`type` = 'PersonalPortfolio') LIMIT 1 Portfolio Load (1.0ms) SELECT `portfolios`.* FROM `portfolios` INNER JOIN `permissions` ON `portfolios`.`id` = `permissions`.`entity_id` WHERE `permissions`.`type` IN ('PortfolioPermission') AND `permissions`.`owner_id` = 3 AND (can_view_info = true || can_edit_cap_table = true || can_view_key_metric = true || can_view_all_metrics = true || can_view_cap_table = true || can_edit_managers = true || can_edit_info = true || can_edit_metrics = true) =&gt; [#&lt;PersonalPortfolio id: 3, name: "Manager Man's portfolio", established: "2013-09-24", created_at: "2013-09-24 23:20:34", updated_at: "2013-09-24 23:20:34", type: "PersonalPortfolio", base_capital_invested: nil, total_shares: nil, logo_file_name: nil, logo_content_type: nil, logo_file_size: nil, logo_updated_at: nil, city: nil, state: nil, invited_manager_email: nil, claim_code: nil, angellist_url: nil, facebook_url: nil, linkedin_url: nil, twitter_url: nil, website_url: nil, longitude: nil, latitude: nil, is_single_use_fund: false, tagline: nil, thumb_file_name: nil, thumb_content_type: nil, thumb_file_size: nil, thumb_updated_at: nil, use_committed_capital: true, owner_id: 3&gt;, #&lt;GroupPortfolio id: 5, name: "New Fund, LLC", established: "2009-01-01", created_at: "2013-09-24 23:20:36", updated_at: "2013-09-24 23:20:36", type: "GroupPortfolio", base_capital_invested: 2000000, total_shares: 1000000, logo_file_name: nil, logo_content_type: nil, logo_file_size: nil, logo_updated_at: nil, city: "Hamlin", state: "WV", invited_manager_email: nil, claim_code: nil, angellist_url: nil, facebook_url: nil, linkedin_url: nil, twitter_url: nil, website_url: nil, longitude: -82.1029, latitude: 38.2787, is_single_use_fund: false, tagline: nil, thumb_file_name: nil, thumb_content_type: nil, thumb_file_size: nil, thumb_updated_at: nil, use_committed_capital: false, owner_id: nil&gt;, #&lt;GroupPortfolio id: 6, name: "SB, LLC", established: "2009-01-01", created_at: "2013-09-24 23:20:36", updated_at: "2013-09-24 23:20:36", type: "GroupPortfolio", base_capital_invested: 2000000, total_shares: 2000000, logo_file_name: nil, logo_content_type: nil, logo_file_size: nil, logo_updated_at: nil, city: "Bloomington", state: "IN", invited_manager_email: nil, claim_code: nil, angellist_url: nil, facebook_url: nil, linkedin_url: nil, twitter_url: nil, website_url: nil, longitude: -86.5264, latitude: 39.1653, is_single_use_fund: false, tagline: nil, thumb_file_name: nil, thumb_content_type: nil, thumb_file_size: nil, thumb_updated_at: nil, use_committed_capital: true, owner_id: nil&gt;] 1.9.3-p362 :125 &gt; User.find(3).personal_portfolios.first.portfolios_as_viewer.count User Load (0.6ms) SELECT `users`.* FROM `users` WHERE `users`.`id` = 3 LIMIT 1 PersonalPortfolio Load (0.5ms) SELECT `portfolios`.* FROM `portfolios` INNER JOIN `stakes` ON `portfolios`.`id` = `stakes`.`possession_id` WHERE `stakes`.`type` IN ('UserStakeInPortfolio') AND `portfolios`.`type` IN ('PersonalPortfolio') AND `stakes`.`owner_id` = 3 AND (`portfolios`.`type` = 'PersonalPortfolio') LIMIT 1 (0.7ms) SELECT COUNT(*) FROM `portfolios` INNER JOIN `permissions` ON `portfolios`.`id` = `permissions`.`entity_id` WHERE `permissions`.`type` IN ('PortfolioPermission') AND `permissions`.`owner_id` = 3 AND (can_view_info = true || can_edit_cap_table = true || can_view_key_metric = true || can_view_all_metrics = true || can_view_cap_table = true || can_edit_managers = true || can_edit_info = true || can_edit_metrics = true) =&gt; 3 1.9.3-p362 :126 &gt; User.find(3).personal_portfolios User Load (0.9ms) SELECT `users`.* FROM `users` WHERE `users`.`id` = 3 LIMIT 1 PersonalPortfolio Load (0.5ms) SELECT `portfolios`.* FROM `portfolios` INNER JOIN `stakes` ON `portfolios`.`id` = `stakes`.`possession_id` WHERE `stakes`.`type` IN ('UserStakeInPortfolio') AND `portfolios`.`type` IN ('PersonalPortfolio') AND `stakes`.`owner_id` = 3 AND (`portfolios`.`type` = 'PersonalPortfolio') =&gt; [#&lt;PersonalPortfolio id: 3, name: "Manager Man's portfolio", established: "2013-09-24", created_at: "2013-09-24 23:20:34", updated_at: "2013-09-24 23:20:34", type: "PersonalPortfolio", base_capital_invested: nil, total_shares: nil, logo_file_name: nil, logo_content_type: nil, logo_file_size: nil, logo_updated_at: nil, city: nil, state: nil, invited_manager_email: nil, claim_code: nil, angellist_url: nil, facebook_url: nil, linkedin_url: nil, twitter_url: nil, website_url: nil, longitude: nil, latitude: nil, is_single_use_fund: false, tagline: nil, thumb_file_name: nil, thumb_content_type: nil, thumb_file_size: nil, thumb_updated_at: nil, use_committed_capital: true, owner_id: 3&gt;] 1.9.3-p362 :127 &gt; User.find(3).personal_portfolios.count User Load (0.8ms) SELECT `users`.* FROM `users` WHERE `users`.`id` = 3 LIMIT 1 (0.4ms) SELECT COUNT(*) FROM `portfolios` INNER JOIN `stakes` ON `portfolios`.`id` = `stakes`.`possession_id` WHERE `stakes`.`type` IN ('UserStakeInPortfolio') AND `portfolios`.`type` IN ('PersonalPortfolio') AND `stakes`.`owner_id` = 3 AND (`portfolios`.`type` = 'PersonalPortfolio') =&gt; 1 </code></pre> <p><strong>Another Variation (for illustration/simplicity</strong></p> <p>If I change the definition in <code>personal_portfolio.rb</code> to:</p> <pre><code>has_many :portfolio_permissions_as_viewer, :class_name =&gt; 'PortfolioPermission', :foreign_key =&gt; :owner_id, :conditions =&gt; { :can_view_info =&gt; true } </code></pre> <p><code>User.find(3).viewable_portfolios == User.find(3).personal_portfolios.first.portfolios_as_viewer</code> still returns false. But <code>User.find(3).viewable_portfolios</code></p> <pre><code>SELECT `portfolios`.* FROM `portfolios` INNER JOIN `permissions` ON `portfolios`.`id` = `permissions`.`entity_id` INNER JOIN `portfolios` `personal_portfolios_viewable_portfolios_join` ON `permissions`.`owner_id` = `personal_portfolios_viewable_portfolios_join`.`id` INNER JOIN `stakes` ON `personal_portfolios_viewable_portfolios_join`.`id` = `stakes`.`possession_id` WHERE `permissions`.`type` IN ( 'PortfolioPermission' ) AND `portfolios`.`type` IN ( 'PersonalPortfolio' ) AND `stakes`.`type` IN ( 'UserStakeInPortfolio' ) AND `stakes`.`owner_id` = 3 AND ( `permissions`.`can_view_info` = 1 ) AND ( `personal_portfolios_viewable_portfolios_join`.`type` = 'PersonalPortfolio' ) </code></pre> <p>I think the issue is that it is requiring both <code>portfolios</code> and <code>personal_portfolios_viewable_portfolios_join</code> to be a <code>PersonalPortfolio</code> when in fact <code>portfolios</code> should be of any type. This leads me to believe it is how I have the relationships set up, but not 100% sure.</p> <p><strong>Need more?</strong> Let me know if you need more information/code. I tried not to be too superfluous but might have not given enough to be helpful.</p>
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    1. COWhat is your question?
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    2. COAdded above: The Question How can I get `User.find(3).viewable_portfolios` return the same as `User.find(3).personal_portfolios.first.portfolios_as_viewer`?
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    3. COWhat data structure is returned by `User.find(3).personal_portfolios`? An array of 3 `PersonalPortfolio` objects?
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