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POAccessing model data with has_many relationship in Rails
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  1. POAccessing model data with has_many relationship in Rails
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    copied!<p>I have the following models:</p> <pre><code>class User &lt; ActiveRecord::Base devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable attr_accessible :name, :email, :password, :password_confirmation, :remember_me has_many :rulesets end class Ruleset &lt; ActiveRecord::Base attr_accessible :title, :game_id, :user_id validates :game_id, presence: true validates :user_id, presence: true validates :title, presence: true belongs_to :user belongs_to :game has_many :rules end class Rule &lt; ActiveRecord::Base attr_accessible :description, :ruleset_id belongs_to :ruleset validates :description, presence: true validates :ruleset_id, presence: true end </code></pre> <p>I have a controller called PagesController that controls the user dashboard, where I want to display the number of rulesets and number of rules that a user has. this is my controller</p> <pre><code>class PagesController &lt; ApplicationController def home end def dashboard @rulesets = current_user.rulesets end end </code></pre> <p>In my dashboard view, I'm attempting to display the rulesets and rules counts as such:</p> <pre><code>&lt;% if current_user.rulesets.any? %&gt; &lt;li&gt;&lt;%= @rulesets.count %&gt; Ruleset&lt;/li&gt; &lt;li&gt;&lt;%= @rulesets.rules.count%&gt; Rules&lt;/li&gt; &lt;% end %&gt; </code></pre> <p>This returns the right number of rulesets if I just try and count the rulesets. When I try and count the rules, I get this and "undefined method `rules'" error. How am I supposed to access the rules that are in the users' ruleset?</p>
 

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