我有兩種模型; Micropost和評論。 Micropost有很多評論和評論屬於Micropost。Rails如何在沒有頁面重新加載的情況下將註釋添加到一組微博中
首先。有持有我家行動
class StaticPagesController < ApplicationController
def home
if logged_in?
@micropost = current_user.microposts.build
@feed_items = current_user.microposts.paginate(page: params[:page])
end
end
(..)
home.html.erb
一個StaticPagesController渲染飼料
= render 'shared/feed'
_feed.html.haml
呈現feed_items
- if @feed_items.any?
%ol.microposts
= render @feed_items
= will_paginate @feed_items
這使得_micropost.html.haml
%li
%div.comments{data: { mid: "#{micropost.id}"}}
%div.comment_container{:id => "comments_for_#{micropost.id}"}
%ul
- comments = micropost.comments
- comments.each do |comment|
%li
%a{:href => user_path(comment.user), :class => "author"}
= comment.user.name
%span.comment_body= comment.body
%span.comment_timestamp= "created " + time_ago_in_words(comment.created_at).to_s
%div
= form_for current_user.comments.build(:micropost_id => micropost.id), |
:remote => true do |f|
= f.hidden_field :micropost_id
= f.hidden_field :user_id
= f.text_field :body, class: "form-control", placeholder: "What do you think?"
= button_tag(type: 'submit', class: "btn btn-default") do
%i.glyphicon.glyphicon-comment
Comment
如果註釋提交的創建動作稱爲
class CommentsController < ApplicationController
before_action :correct_user, only: :destroy
def create
@micropost = Micropost.find(params[:comment][:micropost_id])
@comments = @micropost.comments
@comment = current_user.comments.build(comment_params)
@comment.save
respond_to do |format|
format.js
format.html
end
private
def comment_params
params.require(:comment).permit(
:id, :body, :user_id, :micropost_id)
end
def correct_user
@comment = current_user.comments.find_by(id: params[:id])
redirect_to root_url if @comment.nil?
end
end
create.js.erb
var mid = $(".comment_container").parent(".comments").data('mid');
$("#comments_for_" + mid).html("<%= escape_javascript(render('comments/comment')) %>")
我的目標是一個新的評論添加到其相關的無微柱刷新整個頁面。
我已經把micropost.id的標記與%div.comments{data: { mid: "#{micropost.id}"}}
,我試圖通過它的父標籤搭上微柱 最後(重新)渲染的意見與部分
但這總是返回相同的id並在同一個微博上插入每個新評論。
如何獲得create.js.erb
中的評論的micropost.id知識?
_comment.html.erb
<ul>
<% @comments.each do |comment| %>
<li>
<a class="author" href="<%= user_path(comment.user) %>">
<%= comment.user.name %>
</a>
<span class="comment_body">
<%= comment.body %>
</span>
<span class="comment_timestamp">
<%= "created " + time_ago_in_words(comment.created_at).to_s %>
</span>
</li>
<% end %>
</ul>
這是一個很好的將數據傳遞給JS的導軌。 http://railscasts.com/episodes/324-passing-data-to-javascript –
酷感謝提示! –