如何使用fields_进行儿童更新,以1-1.3的1-1.3中的1-1.3?
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25-10-2019 - |
题
用户有许多user_levels,user_level属于用户。这是user_level的代码以进行更新:
<%= simple_form_for @user do |f| %>
<% @user.user_levels.each do |level| %>
<%= f.fields_for :user_levels, level do |builder| %>
<p><%= render :partial => 'user_levels', :locals => {:f => builder, :i_id => level.position} %></p>
<% end %>
<% end %>
<% end %>
上面的代码将显示当前的user_level,其中选定设置为当前位置。问题是该更新未保存为user_level。
这是user_levels部分
<div class="fields">
<%= f.input :position, :collection => return_position, :prompt => "Choose position",
:label => false, :include_blank => true, :selected => i_id %>
<%= link_to_remove_fields "remove", f %>
</div>
这是发布到服务器的字符串以获取参数[:user]。目前有两个位置适用于用户,一个位置被删除为更新:
{"name"=>"test eng", "login"=>"tester12", "password"=>"password", "password_confirmation"=>"password", "user_type"=>"employee", "user_levels_attributes"=>{"0"=>{"id"=>"5"}, "1"=>{"position"=>"elec_eng", "_destroy"=>"false", "id"=>"6"}}}
有儿童更新的解决方案吗?非常感谢
更新:
def new
@user = User.new
end
def create
@user = User.new(params[:user])
@user.input_by_id = session[:user_id]
if @user.save!
redirect_to URI.escape("/view_handler?index=0&msg=saved!")
else
flash.now[:error] = 'not saved!'
render 'new'
end
end
def edit
@user = User.find(params[:id])
end
def update
@user = User.find(params[:id])
@user.input_by_id = session[:user_id]
if @user.update_attributes(params[:user])
redirect_to URI.escape("/view_handler?index=0&msg=saved}")
else
flash.now[:error] = 'not saved!'
render 'edit'
end
end
user.rb:
has_many :user_levels, :dependent => :destroy
accepts_nested_attributes_for :user_levels, :reject_if => lambda { |a| a[:position].blank? }, :allow_destroy => true
validates_associated :user_levels
解决方案
尝试删除行 @user.user_levels.each do |level|
然后,请发布弹出的问题。用户模型是否接受用户级别的嵌套属性?
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