Ruby on Rails

Thank you very much.

Using 'Language.all.permutation(2).to_a' I've got all the combinations (A->B and B->A) and seeded the LanguagePair model. For the cost I was thinking to puts a decimal column in the LanguagePair model.
At the moment I am working on the form(inside the lineitem views):

<div class="field">
      <%= label_tag :from, "Source Language" %><br />
    <%= select_tag :from, options_for_select(@from_lang), {id: 'source_select'} %>
  </div>
  <div class="field">
      <%= label_tag :to, "Target Language" %><br />
    <%= select_tag :to, options_for_select(@to_lang), {id: 'target_select'} %>
  </div>

and LineItem controller:

def new
    @line_item = LineItem.new
    @from_lang = Product.uniq.pluck(:from)
    @to_lang = Product.where(from: @from_lang.first).pluck(:to)
  end


I haven't got a lots of experience with the Rails and I am always searching for a better ways to write things.

Regards






On Sunday, 28 September 2014 14:33:22 UTC+9, Vivek Sampara wrote:

Paolo, 

I think you've going in the right direction but i'd recommend a few changes based on my experience. Translation Agency has different rates for each language. and the rate per language for A -> B Is not the same as B -> A. So its better to maintain the cost details in Another model unique for one direction. 

Language: 

has_many :language_translations

LanguageTranslation

belongs_to :language

belongs_to :target_language, :class_name => "Language"

#An float/integer field for cost. 

Also i dont think you have to specify foreign_key condition unless your association name and foreignkeys are different.. 

eg blongs_to :car,  :class_name => "Vehicle", :foreign_key => "bus_id" 

If you have car_id as the foreign key. then you can ignore mentioning it in the model. 

Cheers

On Sun, Sep 28, 2014 at 6:40 AM, Paolo Wang <paulw...@gmail.com> wrote:

Hi to all.

I am working for a translation agency and I have the task to create an auto-estimate system and ordering/invoicing administration system. I am stuck on how to manage the language pairs.
I created a Language model with the language name and a LanguagePair with a source language, a target language and a rate per words attributes. I tried with:

LanguagePair
belongs_to :source, :class_name => "Language", :foreign_key => "source_id"
belongs_to :target, :class_name => "Language", :foreign_key => "target_id"

and also by replacing the source and target in the LanguagePair with a string type and loading it with a Language.all.permutation(2).to_a and eliminate the need for nesting.
In the end I will create a sort of cart and lineitem model and add the LanguagePair to the cart as a LineItem.

Is there a "best" way to do this maybe with a Language self-referential model?


thanks in advance

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