On May 20, 11:48 am, Niklas Nson <[email protected]> wrote:
> I have made myself a small activity model like this =>
>
> # == Schema Information
> # Schema version: 20110519174324
> #
> # Table name: activities
> #
> # id :integer not null, primary key
> # account_id :integer
> # action :string(255)
> # item_id :integer
> # item_type :string(255)
> # created_at :datetime
> # updated_at :datetime
>
> belongs_to :account
> belongs_to :item, :polymorphic => true
>
> from this i can get a nice timeline/actions/userfeed or what we want
> to call it from =>
>
> def self.get_items(account)
> item_list = []
> items = where(:account_id => account.id).order("created_at
> DESC").limit(30)
> items.each do |i|
> item_list << i.item_type.constantize.find(i.item_id)
Quick note here - this can be more effectively replaced by:
item_list << i.item
since that's the whole point of the :polymorphic => true
declaration...
> it works like a charm for objects not refering to others - like if a
> user uploads a new image i can
> get the image nice and tidy. But for comments => then i want to get
> the original post info, can i get
> that in get_items directly ? Someone got tips for me ?
I suspect you'll likely be doing that farther up in the code, where
the results of get_items are used. For instance, one might do
something like this:
<%= Activity.get_items(some_account).do |item| %>
<%= render :partial => "#{item.class.name.underscore}", :locals =>
{ :item => item } %>
<% end -%>
then the individual item partials can deal with calling more methods
on the object.
--Matt Jones
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