Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Have you tried using Rails built in "includes" query association feature?</p> <p>From <a href="http://guides.rubyonrails.org/active_record_querying.html#eager-loading-associations" rel="nofollow">http://guides.rubyonrails.org/active_record_querying.html#eager-loading-associations</a></p> <p>It should be something like <code>Person.first.friends.includes(:info)</code></p> <p>Update: Ah, you want the Friends info, and there is no association on the model to get that right now.</p> <p>It looks like you are missing an association to get the <code>Person</code> model for the friend (and not for the user). Something like:</p> <pre><code>class Friend &lt; ActiveRecord::Base belongs_to :person belongs_to :friendly_person, :class_name =&gt; "Person", :foreign_key =&gt; "friend_id" end </code></pre> <p>Then you can use the associations you have set up with the includes similar to before <code>Person.first.friends.includes(:friendly_person =&gt; :info)</code> and that should return the info for the friend.</p> <p>Another update: To access the info column for the <code>friendly_person</code> you can use the association. As in <code>friendly_person.info.description</code>. You can't do that on a collection (obviously) you have to have an instance of person. So something like <code>Person.first.friends.includes(:friendly_person =&gt; :info).first.friendly_person.info.description</code> ... but I would like to point out that this type of code is not considered to be good practice.</p>
    singulars
    1. This table or related slice is empty.
    1. POHow to get info from a third table when joining two tables?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USsalt.racer
    1. USsalt.racer
    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. This table or related slice is empty.
    1. This table or related slice is empty.
    1. COIt throws this error: ActiveRecord::ConfigurationError: Association named 'info' was not found; perhaps you misspelled it?
      singulars
      1. PO
      1. USDavid Morales
    2. COI have updated my question with more info.
      singulars
      1. PO
      1. USDavid Morales
    3. COFor clarification, whose "info" content are you trying to get, the Person or the Friend?
      singulars
      1. PO
      1. USsalt.racer
 

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