小编dca*_*xto的帖子

我的架构上有一个十进制字段的价格,每次我尝试插入价格时,pg都带有此错误.谁能给我任何光？谢谢

组态

t.decimal  "price",  :precision => 2, :scale => 2

错误

PG::Error: ERROR:  numeric field overflow
DETAIL:  A field with precision 2, scale 2 must round to an absolute value less than 1.
: INSERT INTO "items" ("category_id", "name", "price", "updated_at") VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14) RETURNING "id"

我正在尝试这样做:

<%= <h1>Products Purchased </h1> if  params[:status].nil? || params[:status] == Order.statuses[0]  %>

<%= "<h1>Products Sent </h1>" if  params[:status].nil? || params[:status] == Order.statuses[1]  %>

谢谢你的帮助.

我想从一个模型中获取集合以显示所有页面.

Application.html.erb

 <ul>
    <% @category.each do |c| %>
   <li><%= c.name %></li></ul>
        <% end %>
        </ul>

调节器

 @categories = Category.all

如何在应用程序控制器中使用它而不必复制和粘贴所有控制器？