ruby on rails - undefinded method when I add user's name to comments -

@user.name works on posts, user profile, , everywhere else on site. when add user comments, undefined method?

<p class="comment_body">   <h2><%= @user.name %></h2>   <%= comment.body %> </p> 

i tried <%= user.name %> , still error.

i tried <%= current_user.name %> , worked. however, don't want show current user's name, want see user's name of posted comment.

edit:

i forgot associate user comment, i'm not sure how.

comments controller

class commentscontroller < applicationcontroller   def create     @post = post.find(params[:post_id])     @comment = @post.comments.create(params[:comment].permit(:body))      redirect_to post_path(@post)   end end 

i went comments.rb , wrote belongs_to :user , in user.rb added has_many :comments.

so, should set user , save comment, shouldn't you? try like

def create     @post = post.find(params[:post_id])     @comment = @post.comments.create(params[:comment].permit(:body))     @comment.user = current_user     if @comment.save       redirect_to post_path(@post)     else       # else     end end