Displaying 3 results from an estimated 3 matches for "magazine_id".
2006 Apr 11
3
Validations and has_many :through (Join Models)
...Many to Many Relationships Where the Relationship Iteself Has
Data".
Here are the tables:
create_table :magazines do |t|
t.column :title, :string
end
create_table :readers do |t|
t.column :name, :string
end
create_table :subscriptions do |t|
t.column :reader_id, :integer
t.column :magazine_id, :integer
t.column :last_renewal_on, :date
t.column :length_in_issues, :integer
end
And here are the models:
class Subscription < ActiveRecord::Base
belongs_to :reader
belongs_to :magazine
end
class Reader < ActiveRecord::Base
has_many :subscriptions
has_many :magazines, :throu...
2006 Jul 27
0
CRUD, REST and associations
...the editing form (_form.rhtml when spit out by the scaffold
generator), I display a table of checkboxes and magazines where
subscriptions are shown and can''t be changed.
<!-- hidden field, to get a request param, even if no checkbox is
selected -->
<%= hidden_field_tag reader[magazine_ids][]'', '''' %>
<table>
<tr>
<td></td>
</tr>
<% for magazine in reader.magazines %>
<tr>
<td><%= check_box_tag ''reader[magazine_ids][]'', magazine.id,
@reader.subscribed_to?(ma...
2006 Jan 21
7
n-way joins
Hi,
I''m somewhat of a Rails newbie and am trying to understand how to
formulate n-way (3 or 4 way) joins in Rails (where the join tables
contain extra data as well.)
Let me give you my basic entities:
foos
id - pk
name - unique
bars
id - pk
name - unique
bazs
id - pk
name - unique
frozs
id - pk
name - unique
then i have two separate join tables:
foos_bars_bazs - 3 way join