Question

Rails正在给我这个错误主题（＃70287575068140）预期，得到字符串（＃70287576459120），但我的参数是：

Parameters:

{"utf8"=>"✓",
 "_method"=>"patch",
 "authenticity_token"=>"rISZVyQZgcLCGP1y7F4qg7xmW1miuaJvwUe5gu59/MqjjSWem/3JzCei5EPuZSSVdZyqO8bq0eRk0w9zCo0mDA==",
 "student"=>{"name"=>"Eduardo Pedroso",
 "rg"=>"39468291-0",
 "phone"=>"981713271",
 "address"=>"Rua dr Camilo marques",
 "birthday"=>"2015-06-08",
 "scholarity"=>"Superior",
 "responsible_id"=>"1",
 "subjects"=>["#<Subject:0x007fda346828e0>",
  "#<Subject:0x007fda34682660>"]},
 "commit"=>"Edit student",
 "id"=>"1"}

发送主题参数的复选框

    <% Subject.all.each do |subject| %>
      <%= check_box_tag :subjects_id, subject, @student.subjects.include?(subject), :name => 'student[subjects][]' -%>
      <%= label_tag :subjects, subject.name %>
    <% end %>

Answer 1

尝试更改

<%= check_box_tag :subjects_id, subject, @student.subjects.include?(subject), :name => 'student[subjects][]' -%>

到

<%= check_box_tag :subjects_id, subject, @student.subjects.include?(subject), :name => 'student[subjects_id][]' -%>

Answer 2

您最好检查check_box_tag helper

周围的定义

它是这样的：

check_box_tag（name，value =“1”，checked = false，options = {}）

因此，与您的使用情况相比，您已将name属性分配了两次，并将其指定为对象subject的值。

我认为您打算将subject.id分配为值，因此您可以将check_box_tag调用替换为：

来解决此问题。

<%= check_box_tag 'student[subjects][]', subject.id, @student.subjects.include?(subject) -%>

由form_for

2 个答案: