Redmine/app/views/issues/_form.html.erb

<%= labelled_fields_for :issue, @issue do |f| %>
<%= call_hook(:view_issues_form_details_top, { :issue => @issue, :form => f }) %>

<% if @issue.safe_attribute? 'is_private' %>
<p style="float:right; margin-right:1em;">
  <label class="inline" for="issue_is_private" id="issue_is_private_label"><%= f.check_box :is_private, :no_label => true %> <%= l(:field_is_private) %></label>
</p>
<% end %>

<% if @issue.safe_attribute? 'project_id' %>
<p><%= f.select :project_id, project_tree_options_for_select(@issue.allowed_target_projects, :selected => @issue.project), :required => true %></p>
<%= observe_field :issue_project_id, :url => project_issue_form_path(@project, :id => @issue),
                                     :with => "Form.serialize('issue-form')" %>
<% end %>

<% if @issue.safe_attribute? 'tracker_id' %>
<p><%= f.select :tracker_id, @issue.project.trackers.collect {|t| [t.name, t.id]}, :required => true %></p>
<%= observe_field :issue_tracker_id, :url => project_issue_form_path(@project, :id => @issue),
                                     :with => "Form.serialize('issue-form')" %>
<% end %>

<% if @issue.safe_attribute? 'subject' %>
<p><%= f.text_field :subject, :size => 80, :required => true %></p>
<% end %>

<% if @issue.safe_attribute? 'description' %>
<p>
  <%= f.label_for_field :description, :required => @issue.required_attribute?('description') %>
  <%= link_to_function image_tag('edit.png'), 
    'Element.hide(this); Effect.toggle("issue_description_and_toolbar", "appear", {duration:0.3})' unless @issue.new_record? %>
  <%= content_tag 'span', :id => "issue_description_and_toolbar", :style => (@issue.new_record? ? nil : 'display:none') do %>
    <%= f.text_area :description,
                   :cols => 60,
                   :rows => (@issue.description.blank? ? 10 : [[10, @issue.description.length / 50].max, 100].min),
                   :accesskey => accesskey(:edit),
                   :class => 'wiki-edit',
                   :no_label => true %>
  <% end %>
</p>
<%= wikitoolbar_for 'issue_description' %>
<% end %>

<div id="attributes" class="attributes">
  <%= render :partial => 'issues/attributes' %>
</div>

<%= call_hook(:view_issues_form_details_bottom, { :issue => @issue, :form => f }) %>
<% end %>