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PORails, custom validation and error not showing up
 

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  1. PORails, custom validation and error not showing up
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    <p>I've currently five boolean attributes. I do a custom validation on them : </p> <pre><code>def limit_impacts i = 0 choices = [self.first_attr, self.sec_attr, self.third_attr, self.fourth_attr, self.fifth_attr] choices.each do |choice| if choice == true i+=1 end end if i &gt; 2 errors[:base] &lt;&lt; ("There must be one or two impacts.") end end </code></pre> <p>The idea is to test if more than two of them are set to true, if it's the case, set an error. I'm setting a <code>:base error</code> because it's not related directly to only one attribute.</p> <p>I'm simply doing this for my validation : <code>validate :limit_impacts</code></p> <p>and the part of the view handling this : </p> <pre><code> = f.input :first_attr, :as =&gt; :boolean = f.input :sec_attr, :as =&gt; :boolean = f.input :third_attr, :as =&gt; :boolean = f.input :fouth_attr, :as =&gt; :boolean = f.input :fifth_attr, :as =&gt; :boolean </code></pre> <p>The problem is, when I check more than 2 checkboxes the entrie is not saving and that's normal, but no error message is showing up in the view.</p> <p>What am I doing wrong ?</p> <p>By the way I tested it in rails console :</p> <pre><code>MyModel.errors[:base] =&gt; ["There must be one or two impacts."] </code></pre> <p>And this syntax doesn't work either :</p> <pre><code>errors.add :base, "message" </code></pre> <p>EDIT : Here's my controller. It's about the edit method.</p> <pre><code> def edit @page_title = t('projects.edit.title') @project = Project.find(params[:id]) @steps = @project.steps @rewards = @project.rewards @project_bearer = @project.user end </code></pre> <p>Nothing linked with these attributes.</p> <p>When I try to create a project via the rails console, it returns me false :</p> <pre><code>2.0.0p247 :001 &gt; t = Project.create(:social_influence =&gt; true, :environmental_influence =&gt; true, :economical_influence =&gt; true) =&gt; &lt;Project all my attributes ..&gt; 2.0.0p247 :002 &gt; t.save (1.2ms) BEGIN (2.0ms) ROLLBACK =&gt; false </code></pre> <p><strong>SOLUTION :</strong></p> <p>The problem was my update method, bewteen render and redirect. Thanks to @delba I solved it. If you want to see the solution, there's a discussion in the comments of his answer.</p>
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    1. USuser2462805
    1. USuser2462805
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    1. COThe method `errors.add` works for a particular attribute, not for `:base`.
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      1. USDamien
    2. COWell I'm not sure about that, see http://stackoverflow.com/questions/4752106/what-is-the-rails3-version-of-errors-add-to-base
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    3. COYou need to use it this way: `model_instance.errors.add(:attribute_name, "error message, like 'cant be blank'")`
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      1. USMrYoshiji
 

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