使用活动记录验证，Rails验证在模型中不起作用

Question

我已经对其进行验证的模型是：

class DeliveryTimePerformer < ActiveRecord::Base
  belongs_to :delivery_time
  belongs_to :performer
    validates :amount, numericality: { greater_than: 0 }

end
class ClipCategoryPerformer < ActiveRecord::Base
  belongs_to :clip_category
  belongs_to :performer
  validates :amount, numericality: { greater_than: 0 }
end
class DeliveryTimePerformer < ActiveRecord::Base
  belongs_to :delivery_time
  belongs_to :performer
    validates :amount, numericality: { greater_than: 0 }

end

这是html部分。

   <label>Categories</label>
          <% ClipCategory.all.each do |category| %>
              <%= form_tag "update_amount", :remote => :true, :builder => Judge::FormBuilder do %>
              <div class="span12">
                <div class="category_check pull-left" data-category="category_text_<%= category.id %>">
                  <%= check_box_tag "category", 1, ( @performer.clip_category_ids.include?(category.id) ? "checked" : false ), :class => "pull-left" %>  
                  <%= label_tag "category", category.name, :class => "pull-left category_label" %> 
                </div>

                <% amount_val = ClipCategoryPerformer.where("clip_category_id = ? AND performer_id = ?", category.id, current_user.performer.id ).first %>
                <div id="category_text_<%= category.id%>" class="category_text span10 pull-right">
                 <% if amount_val %>
                  <%= number_field_tag "amount", @amount, :class => "pull-left input-medium", :value => amount_val.amount,:validate => true %>
                  <% else %>
                  <%= number_field_tag "amount", @amount, :class => "pull-left input-medium", :value => nil,:validate => true %>
                  <% end %>
                  <%= hidden_field_tag "category_id", category.id %>
                  <%= submit_tag "Update" %>
                 </div>
              </div>
                <br />
              <% end %>

          <% end %>

        </div>

这仅适用于ClipCategoryPerformer。 其余模型在同一页面中具有相似的代码。 它们是使用以下代码通过ajax提交的：

 def update_amount
    #@ccp = ClipCategoryPerformer.create(:clip_category_id => params[:category], :performer_id => current_user.performer.id, :amount => params[:amount].to_f)

    if params[:category] == "1"
      puts "checked"
      @ccp = ClipCategoryPerformer.create(:clip_category_id => params[:category_id], :performer_id => current_user.performer.id, :amount => params[:amount].to_f)
    else
      puts "unchecked"
      #      d = ClipCategoryPerformer.find_by(:clip_category_id == params[:category] && :performer_id == current_user.performer.id)
      d = ClipCategoryPerformer.where("clip_category_id = ? AND performer_id = ?", params[:category_id], current_user.performer.id )

      d.destroy_all
    end
    #puts checkbox(category).checked
    #    rails.logger
    respond_to do |format|
      format.js { @ccp }
    end
  end

验证不会发生。 当我单击更新按钮时。 它不会验证，但会增加值。 我究竟做错了什么？ 我也尝试使用法官宝石。 但是我不确定这是否会奏效，因为它本身无法奏效。 有任何想法吗？

Answer 1

尝试一下：

validates_numericality_of :amount, greater_than: 0, on: :update_amount

或者，您可以尝试取消on: :update_amount