1.我想在视图页面设置GroupMessage模型的形式，group/show/:id。
2.我尝试了下面的代码。
(show.html.erb-group)
<%= form_for([@group, @group_messages]) do |f| %>
<% if @group_message.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@group_message.errors.count, "error") %> prohibited this group_message from being saved:</h2>
<ul>
<% @group_message.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :member_id %><br />
<%= f.number_field :member_id %>
</div>
<div class="field">
<%= f.label :content %><br />
<%= f.text_area :content %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
(groups_controller)
def show
@group = Group.find(params[:id])
@group_message = @group.group_messages.build
if !checklogin? then return end
groupfriends = GroupInMember.where(:member_id => session[:login].id)
gflist = '('
groupfriends.each do |gf|
gflist += gf.member_id.to_s + ","
end
gflist += session[:login].id.to_s + ')'
@query = "select * from group_messages where member_id in " + gflist
@group_messages = GroupMessage.find_by_sql(@query)
respond_to do |format|
format.html # index.html.erb
format.json { render json: @group_messages }
end
end
3.然后我得到一个错误。未定义的方法 `group_messages' 用于#
4.我该如何解决这个问题？？