为哈希属性创建表单字段-Createformfieldsforhashattribute

1  

To be brief, you want to have a form that contains this within it somewhere:

简而言之,您希望在某个地方有一个包含此内容的表单:

<% @product.properties_hash.each do |k,v| %>
  <%= f.field_for k %>
  <%= f.field_for v %>
  <# link to action that will remove this key/value pair from the serialized hash saved in the database %>
<% end -%>

You're going to have to create a blank key and value pair somehow (either here in the form just using the form helpers or by adding a blank(ish) key and value pair to the end of the hash itself by modifying the product in the controller after you load it into @product (like with a @product.add_blank_properties method). Otherwise you won't have 'blank' fields at the end of the loop. . .

你将不得不以某种方式创建一个空白键和值对(在这里只是使用表单助手,或者通过在哈希本身的末尾添加一个空白(ish)键和值对来修改产品将控制器加载到@product后(就像使用@ product.add_blank_properties方法一样)。否则在循环结束时你不会有'空白'字段。

I could go into more detail about adding a new blank line for a property after you create one using the previously existing blank line, but by the time you get this far you should have a good grasp on what you need to look for to solve that (and there are plenty of resources out there (you will probably be using ajax for this).

在使用以前存在的空白行创建属性之后,我可以详细介绍如何为属性添加新的空白行,但是当你到达目前为止,你应该很好地掌握你需要寻找什么来解决这个问题。 (并且有很多资源(你可能会使用ajax)。

-2  

I think you should be using rails standard scaffold but here you may need few customization's.

我认为你应该使用rails标准脚手架,但在这里你可能需要很少的定制。

1) Need to declare resourceful route for properties property name will become resource id 2) Index view will iterate over properties hash to populate relevant fields.

1)需要为属性声明资源路由属性名称将成为资源ID 2)索引视图将迭代属性哈希以填充相关字段。

product.properties.each do |name, value|
   puts name
   puts value
end

2) Create action should create a record if doesn't exist (based on name) already otherwise give an error

2)创建操作应该创建一个记录,如果不存在(基于名称)已经否则会给出错误

product.properties[:price] = 10

3) Update will find property based on name and update it hash way

3)更新将根据名称查找属性并更新其哈希方式

product.properties[:price] = 25

4) delete will actually delete the key-value pair from hash based on property name

4)delete实际上会根据属性名从哈希中删除键值对

product.properties.delete(:price)