Databases
StackOverflow2013
Postsdbo
PObelongs_to with multiple models
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PObelongs_to with multiple models
    primarykey
    data
    text
    <p>I am a Rails noob and have a question. I have a feed aggregator that is organized by this general concept:</p> <p>Feed Category (books, electronics, etc) Feed Site Section (home page, books page, etc) Feed (the feed itself) Feed Entry</p> <p>So: </p> <pre><code>class Category &lt; ActiveRecord::Base has_many :feeds has_many :feed_entries, :through =&gt; :feeds, :limit =&gt; 5 validates_presence_of :name attr_accessible :name, :id end class Section &lt; ActiveRecord::Base has_many :feeds has_many :feed_entries, :through =&gt; :feeds, :limit =&gt; 5 attr_accessible :name, :id end class Feed &lt; ActiveRecord::Base belongs_to :categories belongs_to :sections has_many :feed_entries validates_presence_of :name, :feed_url attr_accessible :name, :feed_url, :category_id, :section_id end class FeedEntry &lt; ActiveRecord::Base belongs_to :feed belongs_to :category belongs_to :section validates_presence_of :title, :url end </code></pre> <p>Make sense? Now, in my index page, I want to basically say... If you are in the Category Books, on the Home Page Section, give me the feed entries grouped by Feed...</p> <p>In my controller:</p> <pre><code>def index @section = Section.find_by_name("Home Page") @books = Category.find_by_name("Books") end </code></pre> <p>In my view:</p> <pre><code>&lt;%= render :partial =&gt; 'feed_list', :locals =&gt; {:feed_group =&gt; @books.feeds} -%&gt; </code></pre> <p>This partial will spit out the markup for each feed entry in the @books collection of Feeds. Now what I need to do is somehow combine the @books with the @section...</p> <p>I tried this:</p> <pre><code>&lt;%= render :partial =&gt; 'feed_list', :locals =&gt; {:feed_group =&gt; @books.feeds(:section_id =&gt; @section.id)} -%&gt; </code></pre> <p>But it isn't limiting by the section ID. I've confirmed the section ID by using the same code in the console...</p> <p>Make sense? Any advice?</p> <p>Thanks!</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USpanzhuli
    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. PObelongs_to with multiple models
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PObelongs_to with multiple models
      1. USZabba
      1. VTFavorite
    1. COI'm having trouble following. What is the difference between Category and Section? Would just adding a find in the controller such as `@feeds = Feed.find :all, :conditions => [ "section_id = ? and category_id = ?", @section.id, @page.id ]` do what you are looking for?
      singulars
      1. PObelongs_to with multiple models
      1. USAwgy
 

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