Databases
StackOverflow2013
Postsdbo
PO2 to 1 has_many through relationship in Rails (how to connect three models together)
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO2 to 1 has_many through relationship in Rails (how to connect three models together)
    primarykey
    data
    text
    <p>What would be the best way to connect following three models?</p> <pre><code>class Tournament &lt; ActiveRecord::Base has_many :submissions has_many :creatures, :through =&gt; :submissions, :uniq =&gt; true has_many :teams, :through =&gt; :submissions, :uniq =&gt; true end class Creature &lt; ActiveRecord::Base belongs_to :team has_many :tournaments, :through =&gt; :team end class Submission &lt; ActiveRecord::Base belongs_to :tournament belongs_to :team end class Team &lt; ActiveRecord::Base has_many :creatures has_many :submissions has_many :tournaments, :through =&gt; :submissions end </code></pre> <p>I want to achieve something like this:</p> <pre><code>&gt; team_1.tournaments[0] = tournament_1 &gt; tournament_1.teams[0] (returns team_1) &gt; team_1.tournaments[0].creatures (returns []) &gt; team.tournaments[0].creatures[0] = creature_1 &gt; creature_1.tournaments (returns tournament_1) </code></pre> <p>What is the most efficient way to have a specific creature and a team associated with a specific tournament?</p> <p>EDIT: The above is the desired behavior.. Current problem is that as soon as I add team to tournament.teams all the creatures in that team automatically have that tournament listed in creature.tournament, while I am trying to make it so that creatures are added to tournament selectively.. Is it at all possible with one join table? </p> <p>Thanks!</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USStpn
    1. USStpn
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload