我的目标是使用nested_form gem:https://github.com/ryanb/nested_form 但是每次添加对象时,我都不想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了一堆字段,第一行是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>
我已尝试将.link_to_add放在几个地方,但它不会将它们放在自己的行中。
每次都有一种简单的方法可以添加一行输入框吗?
答案 0 :(得分:17)
这对我帮助很大:https://github.com/ryanb/nested_form/wiki/How-To:-Render-nested-fields-inside-a-table
默认情况下
fields_for
nested_form_for
在每个嵌套对象周围添加<div class="fields">
包装。但是当您需要在表中呈现嵌套字段时,可以使用:wrapper => false
选项禁用默认包装并使用自定义包:<table> <%= f.fields_for :tasks, :wrapper => false do |task_form| %> <tr class="fields"> <td> <%= task_form.hidden_field :id %> <%= task_form.text_field :name %> </td> <td><%= task_form.link_to_remove 'Remove' %></td> </tr> <% end %> <tr> <td><%= f.link_to_add 'Add', :tasks %></td> </tr> </table>
注意:您需要指定id字段。否则fields_for将在
</tr>
之后插入它。您还需要使用javascript覆盖在表单中插入新子表单的默认行为:
window.NestedFormEvents.prototype.insertFields = function(content, assoc, link) { var $tr = $(link).closest('tr'); return $(content).insertBefore($tr); }
类似的技术可用于列表,以便与jQuery UI可排序列表兼容。
如果您使用的是simple_form,请添加:wrapper =&gt;周围的simple_nested_form_for调用的false选项,否则它会被:wrapper =&gt;覆盖零默认。
答案 1 :(得分:0)
我最后将我的link_to_add作为表格的最后一行,将其添加到我的application.js中(主要来自维基上的示例)
jQuery(function ($) {
window.NestedFormEvents.prototype.insertFields = function(content, assoc, link) {
if($(link).hasClass('insert_in_table')){
return $(content).insertBefore($(link).parent().parent());
}
else{
return $(content).insertBefore(link);
}
};
});
我的表单如下:
<table class="tab">
<tr>
<th>My Headers</th>
</tr>
<%= f.fields_for :line_items, :wrapper => false do |form| %>
<tr class="fields">
<td>MY FIELDS</td>
</tr>
<% end %>
<tr>
<td><%= f.link_to_add "Add more line items", :line_items, :class => 'insert_in_table' %></td>
</tr>
</table>