同一模型的多个 has_manys
我有这些模型：
Person
has_many :messages_form_person, :foreign_key => :from_user_id, :class_name => :messages
has_many :messages_to_person, :foreign_key => :to_user_id, :class_name => :messages
Message
belongs_to :to_person, :foreign_key => :to_user_id, :class_name => :person
belongs_to :from_person, :foreign_key => :to_user_id, :class_name => :person
和此视图：
person#show
<% @person.messages_to_person.each do |message| %>
<%=h message.title %>
<% end %>
但我收到此错误：
People#show 中的类型错误
显示 app/views/people/show.html.erb 第 26 行引发的位置：
无法将符号转换为字符串提取的源代码（在#26行附近）：
23：<%=h @person.biography %> 24： 25： 26: <% @person.messages_to_person.each |message| %> 27： 28：<%结束%> 29：
我基本上想要它，以便人们可以互相发送消息。
谁能帮助我吗？谢谢。
I have these models:
Person
has_many :messages_form_person, :foreign_key => :from_user_id, :class_name => :messages
has_many :messages_to_person, :foreign_key => :to_user_id, :class_name => :messages
Message
belongs_to :to_person, :foreign_key => :to_user_id, :class_name => :person
belongs_to :from_person, :foreign_key => :to_user_id, :class_name => :person
And this view:
person#show
<% @person.messages_to_person.each do |message| %>
<%=h message.title %>
<% end %>
But I get this error:
TypeError in People#show
Showing app/views/people/show.html.erb where line #26 raised:
can't convert Symbol into StringExtracted source (around line #26):
23: <%=h @person.biography %> 24: </p> 25: 26: <% @person.messages_to_person.each do |message| %> 27: 28: <% end %> 29:
I basically want it so that people can send each other messages.
Can anyone help me? Thanks.
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问题是
:class_name应该是stringThe problem is
:class_nameshould be astring