我正在通过与Party和Guest的关系来创建has_many的加入模型,但是我得到了空的参数[:party_id]。用户以访客身份登录,访客可以看到所有聚会列表,并且访客可以单击单个聚会,并且有一个加入聚会的链接。访客单击“加入此聚会”后,它将转到“ / parties / 2 / invites / new”,我有一个表格供访客填写。客人提交表格时,我被卡住了。网址已更改为“ / parties / 2 / invites”,但我仍然看到表单视图,刷新页面后,它将显示邀请索引页面。
我在bindings#create中放入binding.pry并输入params,我看到的是party_is“”。然后看到“ commit” =>“ Join!”,“ controller” =>“ invites”,“ action” =>“ create”,“ party_id” =>“ 3”}被允许:false>。
def new
@invite = Invite.new
@party_id = params[:party_id]
end
def create
@invite = Invite.new(invite_params)
binding.pry
if @invite.save
redirect_to guest_invites_path(current_user)
else
@party = Party.find(params[:party_id])
render :new
end
end
private
def invite_params
params.require(:invite).permit(:add_on, :rsvp, :guest, :party_id)
end
<%= form_with model: @invite, url: [@party, @invite], local: true do |f| %>
<%= f.label :add_on, "Add On" %>
<%= f.select :add_on, [1, 2, 3, 4], :prompt => 'Select One' %><br>
<%= f.label :rsvp, "RSVP" %>
<%= f.select :rsvp, [['Yes', true], ['No', false]], :include_blank => true %>
<%= f.hidden_field :party_id, :value => @party_id %>
<%= f.submit "Join!" %>
<% end %>
class Invite < ApplicationRecord
belongs_to :party
belongs_to :guest
validates :add_on, :rsvp, presence: true
accepts_nested_attributes_for :guest, :party
end
[[4] pry(#)>引发params.inspectRuntimeError:“ 68nwEzR31GS2mcJGq9WhUrP0sp9zSjZENqY4 / iosH8sn0zHRxz + PRXXWsQVJDG100FTc + dG4epdA / Cr1DsiRbQ ==”,“邀请” =>“ 1”,“ rsvp” =“>”“,”“,” =>“加入!”,“控制器” =>“邀请”,“操作” =>“创建”,“ party_id” =>“ 3”}允许:false>来自(撬):4:在'创建'
这是因为未定义@party_id
,因此它返回了nil
,您需要更改此行以使用@party.id
而不是@party_id
<%= f.hidden_field :party_id, :value => @party.id %>
希望有帮助!