当我想去“localhost：3000 / blog”时，网页会出现此错误...
Showing C:/Sites/ifurniture/app/views/refinery/blog/posts/index.html.erb where line #3 raised:
undefined method `to_sym' for {:title=>"Body", :slug=>"body"}:Hash
Rails.root: C:/Sites/ifurniture
这是博客控制器..
module Refinery
module Blog
class PostsController < BlogController
before_filter :find_all_blog_posts, :except => [:archive]
before_filter :find_blog_post, :only => [:show, :comment, :update_nav]
before_filter :find_tags
respond_to :html, :js, :rss
def index
if request.format.rss?
@posts = if params["max_results"].present?
# limit rss feed for services (like feedburner) who have max size
Post.recent(params["max_results"])
else
Post.newest_first.live.includes(:comments, :categories)
end
end
respond_with (@posts) do |format|
format.html
format.rss { render :layout => false }
end
end
def show
@comment = Comment.new
@canonical = refinery.url_for(:locale => Refinery::I18n.current_frontend_locale) if canonical?
@post.increment!(:access_count, 1)
respond_with (@post) do |format|
format.html { present(@post) }
format.js { render :partial => 'post', :layout => false }
end
end
def comment
@comment = @post.comments.create(comment_params)
if @comment.valid?
if Comment::Moderation.enabled? or @comment.ham?
begin
CommentMailer.notification(@comment, request).deliver_now
rescue
logger.warn "There was an error delivering a blog comment notification.\n#{$!}\n"
end
end
if Comment::Moderation.enabled?
flash[:notice] = t('thank_you_moderated', :scope => 'refinery.blog.posts.comments')
redirect_to refinery.blog_post_url(params[:id])
else
flash[:notice] = t('thank_you', :scope => 'refinery.blog.posts.comments')
redirect_to refinery.blog_post_url(params[:id],
:anchor => "comment-#{@comment.to_param}")
end
else
render :show
end
end
def archive
if params[:month].present?
date = "#{params[:month]}/#{params[:year]}"
archive_date = Time.parse(date)
@date_title = ::I18n.l(archive_date, :format => '%B %Y')
@posts = Post.live.by_month(archive_date).page(params[:page])
else
date = "01/#{params[:year]}"
archive_date = Time.parse(date)
@date_title = ::I18n.l(archive_date, :format => '%Y')
@posts = Post.live.by_year(archive_date).page(params[:page])
end
respond_with (@posts)
end
def tagged
@tag = ActsAsTaggableOn::Tag.find(params[:tag_id])
@tag_name = @tag.name
@posts = Post.live.tagged_with(@tag_name).page(params[:page])
end
private
def comment_params
params.require(:comment).permit(:name, :email, :message)
end
protected
def canonical?
Refinery::I18n.default_frontend_locale != Refinery::I18n.current_frontend_locale
end
end
end
end
邮政控制员...
module Refinery
module Blog
class PostsController < BlogController
before_filter :find_all_blog_posts, :except => [:archive]
before_filter :find_blog_post, :only => [:show, :comment, :update_nav]
before_filter :find_tags
respond_to :html, :js, :rss
def index
if request.format.rss?
@posts = if params["max_results"].present?
# limit rss feed for services (like feedburner) who have max size
Post.recent(params["max_results"])
else
Post.newest_first.live.includes(:comments, :categories)
end
end
respond_with (@posts) do |format|
format.html
format.rss { render :layout => false }
end
end
def show
@comment = Comment.new
@canonical = refinery.url_for(:locale => Refinery::I18n.current_frontend_locale) if canonical?
@post.increment!(:access_count, 1)
respond_with (@post) do |format|
format.html { present(@post) }
format.js { render :partial => 'post', :layout => false }
end
end
def comment
@comment = @post.comments.create(comment_params)
if @comment.valid?
if Comment::Moderation.enabled? or @comment.ham?
begin
CommentMailer.notification(@comment, request).deliver_now
rescue
logger.warn "There was an error delivering a blog comment notification.\n#{$!}\n"
end
end
if Comment::Moderation.enabled?
flash[:notice] = t('thank_you_moderated', :scope => 'refinery.blog.posts.comments')
redirect_to refinery.blog_post_url(params[:id])
else
flash[:notice] = t('thank_you', :scope => 'refinery.blog.posts.comments')
redirect_to refinery.blog_post_url(params[:id],
:anchor => "comment-#{@comment.to_param}")
end
else
render :show
end
end
def archive
if params[:month].present?
date = "#{params[:month]}/#{params[:year]}"
archive_date = Time.parse(date)
@date_title = ::I18n.l(archive_date, :format => '%B %Y')
@posts = Post.live.by_month(archive_date).page(params[:page])
else
date = "01/#{params[:year]}"
archive_date = Time.parse(date)
@date_title = ::I18n.l(archive_date, :format => '%Y')
@posts = Post.live.by_year(archive_date).page(params[:page])
end
respond_with (@posts)
end
def tagged
@tag = ActsAsTaggableOn::Tag.find(params[:tag_id])
@tag_name = @tag.name
@posts = Post.live.tagged_with(@tag_name).page(params[:page])
end
private
def comment_params
params.require(:comment).permit(:name, :email, :message)
end
protected
def canonical?
Refinery::I18n.default_frontend_locale != Refinery::I18n.current_frontend_locale
end
end
end
end
这是Blog的index.html.erb。
<section class="container">
<% content_for :body do %>
<%= raw @page.content_for(Refinery::Pages.default_parts.first.to_sym) if Refinery::Pages.default_parts.any? %>
<% if @posts.any? %>
<section id="blog_posts" class="news">
<%= render :partial => "/refinery/blog/shared/post", :collection => @posts %>
<%= will_paginate @posts %>
</section>
<% else %>
<p><%= t('.no_blog_articles_yet') %></p>
<% end %>
<% end %>
<% content_for :side_body_prepend do -%>
<%= raw @page.content_for(Refinery::Pages.default_parts.second.to_sym) %>
<% end if Refinery::Pages.default_parts.many? -%>
<%= render "/refinery/content_page" %>
<% content_for :stylesheets, stylesheet_link_tag('refinery/blog/frontend') %>
</section>
我会留意你的帮助，谢谢。
答案 0 :(得分：0)
您可以对哈希或字符串使用done方法，因此在您的代码中您可以执行以下操作：
to_sym把这个：
<%= raw @page.content_for(Refinery::Pages.default_parts.first.to_sym) if Refinery::Pages.default_parts.any? %>
而不是<%= raw @page.content_for(Refinery::Pages.default_parts.first[:title].to_sym) if Refinery::Pages.default_parts.any? %>
您也可以使用[:title]