2018-01-25,27,28

rails101
错: <%= if !current_user %>
对：<% if !current_user %>
等号

错：herf="#" class="dropdown-toggle" data-taggle="dropdown" >
对：

错：<% if current_user && current_user == group_user %>
对：<% if current_user && current_user == group.user %>

错：@post = Post.new(Post_params)
对：@post = Post.new(post_params)

错：<%= f.input :content, input_html: { class="form-content"} %>
对：<%= f.input :content, input_html: { class:"form-control"} %>

<% @post.each do |post| %>
<% @posts.each do |post| %>

<%= f.submit "Submit", disable_with: "Submitting...", class: "btn btn-primary" %>
<%= f.submit "Submit", disable_with: "Submiting...", class: "btn btn-primary" %>

<%= @post.content %>
<%= post.content %>

<%= link_to("Edit", edit_group_post_path(post.group post), class: "btn btn-default btn-xs") %>
<%= link_to("Edit", edit_group_post_path(post.group, post), class: "btn btn-default btn-xs") %>
Edit双引号和单引号一样显示。有区别吗？ post.group忘记加逗号