Question

目前正在获取一个未定义的方法，我不确定如何解决这个问题，现在已经停留了一段时间。非常感谢所有帮助！

NoMethodError in Users#show

undefined method `comments' for nil:NilClass

Extracted source (around line #2):

1: <div class="CommentField">
2: <%= form_for ([@micropost, @micopost.comments.new]) do |f| %>
3: <%= f.text_area :content, :class => "CommentText", :placeholder => "Write a Comment..." %>
4: <div class="CommentButtonContainer">
5: <%= f.submit "Comment",

用户控制器

class UsersController < ApplicationController
  def show
    @user = User.find(params[:id])
    @school = School.find(params[:id])
    @micropost = Micropost.new
    @comment = Comment.new
    @comment = @micropost.comments.build(params[:comment])
    @microposts = @user.microposts.paginate(:per_page => 10, :page => params[:page])
  end
end

评论控制器

class CommentsController < ApplicationController 
  def create
    @micropost = Micropost.find(params[:micropost_id])
    @comment = @micropost.comments.build(params[:comment])
    @comment.user_id = current_user.id
    @comment.save 
      respond_to do |format|
      format.html 
      format.js
    end
  end
end

评论表

<div class="CommentField">
<%= form_for ([@micropost, @micopost.comments.new]) do |f| %>
<%= f.text_area :content, :class => "CommentText", :placeholder => "Write a Comment..." %>
<div class="CommentButtonContainer">
<%= f.submit "Comment", :class => "CommentButton b1" %>
</div>
<% end %>
</div>

Answer 1

我不想告诉你这个，但你有一个错字。您输入了@micopost.comments.new而不是@micropost.comments.new。纠正这一点，它将解决这个问题。

Rails：未定义的方法问题

1 个答案: