Rails-在表单中找不到ID [英] Rails - Id can't be found in Forms
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问题描述
有一段时间我陷入了这个问题.我正在尝试通过一个表格传递3个ID,以将数据保存在我的数据库中.
Have some time I'm stuck in this problem. I'm trying to pass 3 Id's through a form to save the data in my database.
def new
@person = Person.find(params[:person])
@honored = Person.find(params[:honored])
@group = Group.find(params[:group_id])
@honor = Honor.new
end
def create
@person = Person.find(current_person)
@honor = Honor.create(:group => Group.find(params[:group_id]),
:person => Person.find(params[:person]),
:honored => Person.find(params[:honored]))
if @honor.valid?
flash[:success] = "Honor created."
redirect_to (:back)
else
redirect_to (:back)
end
end
在我看来,我调用new
方法:
In my view where I call the new
method:
<% @asked_groupmembership.each do |agm| %>
<%= link_to "Create Honor", new_honor_path(:group_id => @group.id, :person => current_person.id,
:honored => agm.member.id) %>
我的表格:
<% form_for @honor do |f| %>
<%= f.hidden_field :group_id, :value => @group.id %>
<%= f.hidden_field :person, :value => current_person.id %>
<%= f.hidden_field :honored, :value => @honored.id %>
<div class="field">
<%= f.label :texto %><br />
<%= f.text_field :texto %>
</div>
当我单击提交"按钮时,出现此错误:
When I click the submit button I get this error:
Couldn't find Group without an ID
app/controllers/honors_controller.rb:22:in `create'
{"utf8"=>"✓",
"authenticity_token"=>"C7wofMY4VcyfdS10oc3iglex8nZVBMQ0Nh22nMiaOqs=",
"honor"=>{"group_id"=>"39",
"person"=>"2",
"honored"=>"44",
...
},
"commit"=>"Insert"}
我该如何解决? 谢谢.
How can I solve this? Thanks.
## EDITED ##
class Honor < ActiveRecord::Base
belongs_to :person, :class_name => 'Person', :foreign_key => "person_id"
belongs_to :honored, :class_name => 'Person', :foreign_key => "honored_id"
belongs_to :group, :class_name => 'Group', :foreign_key => "group_id"
推荐答案
您需要使用以下方法更新您的create方法:
You need to update your create method with:
def create
@person = Person.find(current_person)
@honor = Honor.create(:group_id => params[:honor][:group],
:person_id => params[:honor][:person],
:honored_id => params[:honor][:honored])
if @honor.save
...
end
因为提交表单后,您的数据就以params [:honor]的形式存在.您可以在问题中发布的代码中看到传递给控制器的哈希值:
Because after submitting your form you got your data in params[:honor]. You can see the hash passed to the controller in the code posted in your question:
"honor"=>{"group"=>"39",
"person"=>"2",
"honored"=>"44",
这篇关于Rails-在表单中找不到ID的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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