[英]Rails 4 how to pass dynamic params to controller?
I have this form in my view: 我认为这种形式:
<%= form_tag({:action => :update_quantity}, :params => [:ids_to_update]) do %>
<% @id_array = [] %>
<% @db_lines.each do |line| %>
<% @id_array << line['id'] %>
<tr>
<td><%= image_tag "#{line['preview_url']}&maxSize=135" %></td>
<td><%= line['ProductCode'] %></td>
<td><%= text_field_tag("updated_quantity#{line['id']}", "#{line['Quantity']}") %></td>
<td><%= number_to_currency(line['UnitPrice']) %></td>
<td><%= number_to_currency(line['Quantity'] * line['UnitPrice']) %>
</tr>
<% end %>
<tr>
<td colspan="5" class="text-right">
<%= hidden_field_tag :ids_to_update, @id_array.join(',') %>
<%= submit_tag("Update Quantity", :class => 'tiny button raidus') %>
</td>
</tr>
<% end %>
In the text_field_tag i'm setting each name to be updated_quantityx where x is the ID of the record. 在text_field_tag中,我将每个名称设置为update_quantityx,其中x是记录的ID。 How do I pass each one of those into the params section of the form_tag when I don't know what the ID will be and how many will be there? 当我不知道ID是多少以及有多少ID时,如何将其中的每一个传递到form_tag的params部分中? The records are coming from my order_line model and this page is a separate controller for the shopping cart.. 记录来自我的order_line模型,此页面是购物车的单独控制器。
You don't need the params
section in the form_tag
. 您不需要form_tag
的params
部分。 Params will be automatically generated by _tags
inside the form. 参数将由_tags
内的_tags
自动生成。
The text_field_tag values will be passed to the controller as params[:updated_quantity#1]
, params[:updated_quantity#2]
and so on. text_field_tag值将作为params[:updated_quantity#1]
, params[:updated_quantity#2]
等传递给控制器。
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