我的目标是使用nested_form gem:https ://github.com/ryanb/nested_form 但不是每次添加对象时只创建一组新的标签和字段,而是想在现有表中插入一行。
= nested_form_for @transaction do |f|
%h3 Line Items
%table
%tr
%th Branch
%th Department
%th Invoice #
%th Amount
%th Transaction Type
%th Deposit (y/n)
%th
= f.fields_for :line_items do |line_item|
%tr
%td
= line_item.text_field :location_id
%td
= line_item.text_field :department_id
%td
= line_item.text_field :invoice_num
%td
= line_item.text_field :amount
%td
= line_item.text_field :transaction_type
%td
= line_item.text_field :deposit
%td= line_item.link_to_remove "Remove"
%p= f.link_to_add "Add", :line_items
.link_to_add 按钮只是在第一行创建一堆字段,第一个 td。
<h3>Line Items</h3>
<table>
<tr>
<th>Branch</th>
<th>Department</th>
<th>Invoice #</th>
<th>Amount</th>
<th>Transaction Type</th>
<th>Deposit (y/n)</th>
<th></th>
</tr>
<div class="fields"><tr>
<td>
<input id="transaction_line_items_attributes_0_location_id" name="transaction[line_items_attributes][0][location_id]" size="30" type="text" />
</td>
<td>
<input id="transaction_line_items_attributes_0_department_id" name="transaction[line_items_attributes][0][department_id]" size="30" type="text" />
</td>
<td>
<input id="transaction_line_items_attributes_0_invoice_num" name="transaction[line_items_attributes][0][invoice_num]" size="30" type="text" />
</td>
<td>
<input id="transaction_line_items_attributes_0_amount" name="transaction[line_items_attributes][0][amount]" size="30" type="text" />
</td>
<td>
<input id="transaction_line_items_attributes_0_transaction_type" name="transaction[line_items_attributes][0][transaction_type]" size="30" type="text" />
</td>
<td>
<input id="transaction_line_items_attributes_0_deposit" name="transaction[line_items_attributes][0][deposit]" size="30" type="text" />
</td>
<td><input id="transaction_line_items_attributes_0__destroy" name="transaction[line_items_attributes][0][_destroy]" type="hidden" value="false" /><a href="javascript:void(0)" class="remove_nested_fields" data-association="line_items">Remove</a></td>
</tr>
<td><a href="javascript:void(0)" class="add_nested_fields" data-association="line_items">Add</a></td>
</div>
</table>
我尝试将 .link_to_add 放在几个地方,但它没有将它们放在自己的行中。
有没有一种简单的方法可以每次添加一行输入框?