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POundefined method `email' for nil:NilClass in Model Associations Rails, dont works
 

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  1. POundefined method `email' for nil:NilClass in Model Associations Rails, dont works
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    <p>I have a problem, i make this atribbuition i comment model:</p> <pre><code>class Comment &lt; ActiveRecord::Base attr_accessible :comment belongs_to :post belongs_to :user </code></pre> <p>and this in user model</p> <pre><code>class User &lt; ActiveRecord::Base attr_accessible :email, :password, :password_confirmation has_many :posts has_many :comments </code></pre> <p>but this dont works:</p> <pre><code> &lt;% post.comments.each do |comment| %&gt; &lt;div id="comments" &gt; &lt;%= comment.user.email %&gt; &lt;%= comment.comment %&gt; &lt;/div&gt; &lt;%end%&gt; </code></pre> <p>appear the error:</p> <pre><code>undefined method `email' for nil:NilClass </code></pre> <p>please what is the problem, in the create of the comment i make the atribbuition so , look:</p> <pre><code> @comment = @post.comments.create(params[:comment],:user_id =&gt; current_user.id) </code></pre> <p>how i solve this error, please-</p> <p>I try this:</p> <pre><code>@comment = Comment.new(params[:comment]) @comment.user = current_user @comment.post = @post @comment.save this @comment = @post.comments.create(params[:comment].merge(:user_id =&gt; current_user.id)) </code></pre> <p>and this:</p> <pre><code>@comment = @post.comments.build(params[:comment]) @comment.user = current_user @comment.save </code></pre> <p>dont works</p> <p>same error:</p> <pre><code>undefined method `email' for nil:NilClass Extracted source (around line #48): 45: 46: &lt;% post.comments.each do |comment| %&gt; 47: &lt;div id="comments" &gt; 48: &lt;%= comment.user.email %&gt; 49: &lt;%= comment.comment %&gt; 50: &lt;/div&gt; 51: &lt;%end%&gt; </code></pre> <p>i dont know what is wrong my model comment have :user_id</p> <p>attr_accessible :comment,:user_id,:post_id</p> <p>and my form make is this</p> <pre><code> &lt;div id="comment_form_&lt;%= post.id %&gt;" style="display: none;" &gt; &lt;%= form_for [post,post.comments.build], :remote =&gt; true,:class=&gt;"comment" do |com| %&gt; &lt;%= com.text_area :comment %&gt; &lt;%= com.submit "aaa" %&gt; &lt;%end %&gt; </code></pre> <p>please help me i dont know where is the error, the db is migrate correctly</p> <p>UPDATE:</p> <p>Have a before_filter and need login to see the page to comment, so have current_user, and i reset the bd and make new comments logged, i test meet getting the comment.user_id and get the id of the user but the method comment.user.email dont works, i will post the , the comment model is:</p> <pre><code> attr_accessible :comment,:user_id,:post_id belongs_to :post belongs_to :user validates_presence_of :comment ,:on =&gt;:create </code></pre> <p>the model user is:</p> <pre><code> class User &lt; ActiveRecord::Base attr_accessible :email, :password, :password_confirmation,:username has_many :posts has_many :comments attr_accessor :password before_save :encrypt_password validates_confirmation_of :password validates_presence_of :password, :on =&gt; :create validates_presence_of :email validates_uniqueness_of :email </code></pre>
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    1. CODo not post same question twice: http://stackoverflow.com/questions/14175913/undefined-method-email-for-nilnilclass-in-exibe-the-mail-of-table-father
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    2. CONobody response =/
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