I read and copied / pasted the entire sample Ruby on Rails 3 Getting Started sample application. I have a working blogging application. I added the verification code to the Post model as follows:
class Post < ActiveRecord::Base
validates :name, :length => { :maximum => 64 }
validates :title, :presence => true,
:length => { :minimum => 5 }
validates :content, :presence => true,
:length => { :minimum => 5 }
validates :tags, :presence => true,
:length => { :minimum => 1 }
has_many :comments, :dependent => :destroy
has_many :tags
accepts_nested_attributes_for :tags, :allow_destroy => :true,
:reject_if => proc { |attrs| attrs.all? { |k, v| v.blank? } }
end
When I try to submit an empty form to verify the verification code, I get the expected errors, but it does not display the div <div class="field_with_errors">for the Tag field.
The resulting HTML:
<!DOCTYPE html>
<html>
<head>
<title>Rails Blog</title>
<link href="/stylesheets/scaffold.css?1292045851" media="screen" rel="stylesheet" type="text/css" />
<script src="/javascripts/prototype.js?1292044228" type="text/javascript"></script>
<script src="/javascripts/effects.js?1292044228" type="text/javascript"></script>
<script src="/javascripts/dragdrop.js?1292044228" type="text/javascript"></script>
<script src="/javascripts/controls.js?1292044228" type="text/javascript"></script>
<script src="/javascripts/rails.js?1292044229" type="text/javascript"></script>
<script src="/javascripts/application.js?1292044228" type="text/javascript"></script>
<meta name="csrf-param" content="authenticity_token"/>
<meta name="csrf-token" content="FYDsbSpjAry7CQrVbdgdozsOJ66w4f4b8nVQ+towSYg="/>
</head>
<body>
<h1>New post</h1>
<form accept-charset="UTF-8" action="/posts" class="new_post" id="new_post" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="✓" /><input name="authenticity_token" type="hidden" value="FYDsbSpjAry7CQrVbdgdozsOJ66w4f4b8nVQ+towSYg=" /></div>
<div id="errorExplanation">
<h2>6 errors prohibited this post from being saved:</h2>
<ul>
<li>Title can't be blank</li>
<li>Title is too short (minimum is 5 characters)</li>
<li>Content can't be blank</li>
<li>Content is too short (minimum is 5 characters)</li>
<li>Tags can't be blank</li>
<li>Tags is too short (minimum is 1 characters)</li>
</ul>
</div>
<div class="field">
<label for="post_name">Name</label><br />
<input id="post_name" name="post[name]" size="30" type="text" value="" />
</div>
<div class="field">
<div class="field_with_errors"><label for="post_title">Title</label></div><br />
<div class="field_with_errors"><input id="post_title" name="post[title]" size="30" type="text" value="" /></div>
</div>
<div class="field">
<div class="field_with_errors"><label for="post_content">Content</label></div><br />
<div class="field_with_errors"><textarea cols="40" id="post_content" name="post[content]" rows="20"></textarea></div>
</div>
<h2>Tags</h2>
<div class="field">
<label for="post_tags_attributes_0_name">Tag:</label>
<input id="post_tags_attributes_0_name" name="post[tags_attributes][0][name]" size="30" type="text" />
</div>
<div class="actions">
<input id="post_submit" name="commit" type="submit" value="Create Post" />
</div>
</form>
<a href="/posts">Back</a>
</body>
</html>
What could be the reason for the absence <div class="field_with_errors">? Does this have anything to do with the partial tag form? Thanks for reading my first post.
Posts / _form.html.erb:
<% @post.tags.build %>
<%= form_for(@post) do |post_form| %>
<% if @post.errors.any? %>
<div id="errorExplanation">
<h2><%= pluralize(@post.errors.count, "error") %> prohibited this post from being saved:</h2>
<ul>
<% @post.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= post_form.label :name %><br />
<%= post_form.text_field :name %>
</div>
<div class="field">
<%= post_form.label :title %><br />
<%= post_form.text_field :title %>
</div>
<div class="field">
<%= post_form.label :content %><br />
<%= post_form.text_area :content %>
</div>
<h2>Tags</h2>
<%= render :partial => 'tags/form',
:locals => {:form => post_form} %>
<div class="actions">
<%= post_form.submit %>
</div>
<% end %>
/ tags _form.html.erb:
<%= form.fields_for :tags do |tag_form| %>
<div class="field">
<%= tag_form.label :name, 'Tag:' %>
<%= tag_form.text_field :name %>
</div>
<% unless tag_form.object.nil? || tag_form.object.new_record? %>
<div class="field">
<%= tag_form.label :_destroy, 'Remove:' %>
<%= tag_form.check_box :_destroy %>
</div>
<% end %>
<% end %>
The output of the command when sending an empty form:
Started POST "/posts" for 192.168.11.28 at 2010-12-11 23:23:03 +0000
Processing by PostsController
Parameters: {"utf8"=>"✓", "authenticity_token"=>"T2o6Tn8cfeJyVVcFMU91Zuk42BBs06uqyMIgfmy41SM=", "post"=>{"name"=>"", "title"=>"", "content"=>"", "tags_attributes"=>{"0"=>{"name"=>""}}}, "commit"=>"Create Post"}
Rendered tags/_form.html.erb (45.5ms)
Rendered posts/_form.html.erb (320.0ms)
Rendered posts/new.html.erb within layouts/application (351.2ms)
Completed 200 OK in 748ms (Views: 379.2ms | ActiveRecord: 0.0ms)