我一生无法弄清楚我的代码在做什么错。我有一个form_for,但是单击“保存”时,它不会保存表单中的数据,而不会保存控制器中的数据。
控制器:
class RegistersController < ApplicationController
def index
end
def new
@reg = Register.new
end
def create
@reg = Register.new(params.permit(:user, :user_id, :class_id))
@reg.user_id = current_user.id
@reg.save
end
def update
end
end
新功能:
<%= form_for @reg do |f| %>
<div class="form-group">
<%= f.label :class_name, class: "col-sm-2 control-label" %>
<%= f.text_area :class_name, class: "form-control"%>
</div>
<div class="form-group">
<%= f.label :user, class: "col-sm-2 control-label" %>
<%= f.text_area :user, class: "form-control" %>
</div>
<%= f.submit 'Save', class: 'btn btn-primary btn-block' %>
<% end %>
型号:
class Register < ApplicationRecord
belongs_to :user, optional: true
belongs_to :event, optional: true
end
编辑:
我进一步弄乱了,然后来到了这里:
@reg = Register.new(params.required(:user).permit(:user_id,:class_name))
这是给我的日志:
Processing by RegistersController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"BJr3T+RiI0YiyixC6EORKtMG3L8Q9LP3kL7Dh4apt0WdeGzN5mVhy/oNn64+xF9TRRztLqL5/Hf6WEwhucRF8w==", "register"=>{"class_name"=>"Toddler", "user"=>"Billy"}, "commit"=>"Save"}
Completed 400 Bad Request in 1ms (ActiveRecord: 0.0ms)
ActionController::ParameterMissing (param is missing or the value is empty: user):
答案 0 :(得分:0)
只要喜欢:
def create
@reg = Register.new(params.required(:register).permit(:user_id, :class_name))
@reg.user_id = current_user.id
@reg.save! # This will raise exception if something is wrong
end
顺便说一句,仅适用于TDD / BDD概念即可消除此类问题。这个过程非常简单。