displaying data
On Monday, May 18, 2015 at 12:21:54 PM UTC-4, Elizabeth McGurty wrote:
>
> Greetings All,
>
> I hope you all understand what I am writing here. Lots of views involve
> displaying date from static 'look up' tables: states, countries, type...
>
> From all of the documentation I have read, the standard code conduct seems
> @look_up_object = LookUpModel.find .where. conditions => ids match
>
> I pursued that structure, and for long listings, so many calls to database
> really bothered me.
>
> So I re-wrote the code on look-up for my case static item_conditions,
> containing only two field: conditions and item_conditions_id:
>
> In the view I now have, following found parent records:
>
> <% @icond = Itemconditions.find(:all, :readonly) %>
> <% @ih = Hash.new %>
> <% @ih2 = Hash.new %>
> <% @ih = @icond.to_a.map(&:serializable_hash) %>
> <% for kv in @ih %>
> <% @ih2[kv.fetch("item_conditions_id")] =
> kv.fetch("conditions") %>
> <% end %>
>
> And then later for iterative record output I have in the view, ldr as the
> parent data source
>
> <label class="item_listing">Condition: <%=
> @ih2[ldr.item_condition_id.to_s] %></label>
>
> Benchmarked this and vastly faster. Deployed it, no problems/errors. I
> have researched Ruby and Ruby on Rails API. I have not found a simpler,
> more native approach. Masters if you are aware of Ruby on Rails way,
> please let me know.
>
> Thanks,
>
> Liz McGurty
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