Databases
StackOverflow2013
Postsdbo
POJoining a table with an unconventional column name
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POJoining a table with an unconventional column name
    primarykey
    data
    text
    <p>I have the following model :</p> <pre><code>class SocUser &lt; ActiveRecord::Base attr_accessible :email, :id, :name, :username has_many :friends, :class_name =&gt; 'SocFriend', :foreign_key =&gt; 'user_id', :dependent =&gt; :destroy has_many :ownlist, :class_name =&gt; 'SocOwnlist', :foreign_key =&gt; 'user_id', :dependent =&gt; :destroy end class SocFriend &lt; ActiveRecord::Base attr_accessible :user_id, :friend_id belongs_to :user, :class_name =&gt; 'SocUser' belongs_to :friend, :class_name =&gt; 'SocUser' end class SocOwnlist &lt; ActiveRecord::Base attr_accessible :user_id, :book_id belongs_to :user, :class_name =&gt; 'SocUser' belongs_to :book, :class_name =&gt; 'SocBook' end </code></pre> <p>A user can have many friends. And each friend is also a user. Any user can have many books. How do I add an association so that a user can access all the books of his friends. </p> <p>If I add an association in SocUser like <code>has_many :avail_list, :class_name =&gt; 'SocOwnlist', :through =&gt; :friends, :source =&gt; :friend</code></p> <p>The sql query it generates when we call <code>myuser.avail_list</code> is:</p> <pre><code>SELECT "soc_ownlists".* FROM "soc_ownlists" INNER JOIN "soc_friends" ON "soc_ownlists"."id" = "soc_friends"."friend_id" WHERE "soc_friends"."user_id" = 1 </code></pre> <p>But the ON condition should be "soc_ownlists".<b>"user_id"</b> = "soc_friends"."friend_id", is there a way to specify it?</p> <p>Or is there any other way to specify the association?</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. UStereško
    1. USramz
    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. VO
      singulars
      1. POJoining a table with an unconventional column name
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    2. VO
      singulars
      1. POJoining a table with an unconventional column name
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    3. VO
      singulars
      1. POJoining a table with an unconventional column name
      1. This table or related slice is empty.
      1. VTUpMod
    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