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POIn Ruby on Rails, how do I assign a default value to a member_of member of an ActiveRecord object?
 

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  1. POIn Ruby on Rails, how do I assign a default value to a member_of member of an ActiveRecord object?
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    <p>I'm new to ruby on rails, and I've inherited a codebase. Right now I can't create a new user account in my application, when I try I get the following error:</p> <p>NoMethodError in Users::RegistrationsController#create</p> <p>undefined method `name' for nil:NilClass Rails.root: /home/nathan/dev/legwork-core</p> <p>Application Trace | Framework Trace | Full Trace app/models/contact.rb:74:in <code>block (2 levels) in &lt;class:Contact&gt;' app/models/user.rb:31:in</code>update_contact'</p> <p>The calling code is here:</p> <pre><code> searchable do string :category do self.category.name end end </code></pre> <p>Category is supposed to be an instance of ContactCategory, and what I think I need is to set self.category to the default if its nil. I tried this to fix it:</p> <pre><code> after_initialize :set_defaults def set_defaults self.category = ContactCategory.first if self.category.nil? end </code></pre> <p>I also tried:</p> <pre><code> def after_initialize self.category = ContactCategory.first if self.category.nil? end </code></pre> <p>And I've tried:</p> <pre><code> before_create :set_defaults def set_defaults self.category = ContactCategory.first if self.category.nil? end </code></pre> <p>Someone else has suggested putting this logic in before_save, but there is already a before_save that has this logic in it, that's where I saw what the author had intended to be the default in the first place.</p> <p>UPDATE:</p> <p>This question is silly now that I see what's wrong. I was assuming that the assignment statement never ran because I assumed ContactCategory.first was also not nil. Sadly, everything here is working as expected. The moral of the story is:</p> <p>All of the hooks I was using to set the default were working correctly. I would recommend using them to set a default using ActiveRecord.</p>
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    1. USNathan C. Tresch
    1. USNathan C. Tresch
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      1. POIn Ruby on Rails, how do I assign a default value to a member_of member of an ActiveRecord object?
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      1. VTUpMod
    2. VO
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      1. POIn Ruby on Rails, how do I assign a default value to a member_of member of an ActiveRecord object?
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    1. COcan you show us the database structure? Describe table? Currently you are using 'name' but it seems that that field doesn't exist.
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      1. POIn Ruby on Rails, how do I assign a default value to a member_of member of an ActiveRecord object?
      1. USMichael Durrant
    2. COThat's the NoMethodError in Users::RegistrationsController#create undefined method `name
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      1. POIn Ruby on Rails, how do I assign a default value to a member_of member of an ActiveRecord object?
      1. USMichael Durrant
    3. COThe real problem is that the category is nil: `undefined method 'name' for nil:NilClass`.
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      1. POIn Ruby on Rails, how do I assign a default value to a member_of member of an ActiveRecord object?
      1. USsczizzo
 

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