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POValidating data of a model from another controller in Rails
 

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  1. POValidating data of a model from another controller in Rails
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    <p>I have two tables: Client(id,name,...)<br> Purchase(id,item,date,client_id,...)</p> <p>They have their respective Model, with their validations. What I need is to create a new client with a new purchase, all into the create method of Client controller. Something like this:</p> <pre><code>def create @client = Client.new(params[:client]) respond_to do |format| if @client.save # Add purchase @sell = Purchase.new @sell.client_id = @client.id @sell.date = params[:date] # Fill another fields if @sell.save # Do another stuff... else format.html { render :action =&gt; "new" } format.xml { render :xml =&gt; @client.errors, :status =&gt; :unprocessable_entity } end flash[:notice] = 'You have a new client!' format.html { redirect_to(:action =&gt; :show, :id =&gt; @evento.id) } format.xml { render :xml =&gt; @client, :status =&gt; :created, :location =&gt; @client } else format.html { render :action =&gt; "new" } format.xml { render :xml =&gt; @evento.client, :status =&gt; :unprocessable_entity } end end end </code></pre> <p>In Purchase's model I have:</p> <pre><code>belongs_to :client validates_format_of :date, :with =&gt; /^20[0-9]{2}[-][0-9]{2}[-][0-9]{2}$/, :message =&gt; 'not valid' validates_presence_of :date </code></pre> <p>And there is my problem: how can I validate the date input, through validations into the model, from Client controller? And, how can I rollback the new client created when errors?</p> <p>Yes, I can do the check as the very first instruction in the method, with a regular expression, but I think it's ugly. I feel like might exist a conventional method for doing this validation or even doing all the stuff in another way (i.e. calling create method for Purchase from Client controller).</p> <p>Can you put me back in the right way?</p> <p>Thank you in advance.</p>
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