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我是新的水豚，我需要选择与星期三相同的列中的复选框。我怎样才能选择它？我尝试了几种方法，但我仍然得到这个错误，找不到元素。使用Capybara从特定行和列中选择表格中的复选框
HTML部分看起来是这样的：
<table class="grid">
<thead>
<tr>
<th colspan="1" rowspan="1" style="width: 56px;">From</th>
<th colspan="1" rowspan="1" style="width: 56px;">To</th>
<th colspan="1" rowspan="1">Monday</th>
<th colspan="1" rowspan="1">Tuesday</th>
<th colspan="1" rowspan="1">Wednesday</th>
<th colspan="1" rowspan="1">Thursday</th>
<th colspan="1" rowspan="1">Friday</th>
<th colspan="1" rowspan="1">Saturday</th>
<th colspan="1" rowspan="1">Sunday</th>
<th colspan="1" rowspan="1" style="width: 18px;"></th>
</tr>
</thead>
<tbody>
<tr class="t-forminjector" id="rowInjector_1470ffb567f" style=
"background-image: none; background-color: rgba(0, 0, 0, 0);">
<td colspan="1" rowspan="1" xmlns=
"http://www.w3.org/1999/xhtml">
<input name="t:formdata" type="hidden" value=
"H4sIAAIDOPgvsNqt">
<div class="timepicker"><input class=
"timepicker-input patternDailyStart hasDatepicker" id=
"patternDailyStart_1470ffb567f" name=
"patternDailyStart_1470ffb567f" type="text" value="">
<img alt="..." class="ui-datepicker-trigger" src=
"clock.png" title="..."></div><img alt="" class=
"t-error-icon" id="patternDailyStart_1470ffb567f_icon" src=
"spacer.gif" style="display: none;">
</td>
<td colspan="1" rowspan="1" xmlns=
"http://www.w3.org/1999/xhtml">
<div class="dailyEnd">
<div class="timepicker"><input class=
"timepicker-input patternDailyEnd hasDatepicker" id=
"patternDailyEnd_1470ffb567f" name=
"patternDailyEnd_1470ffb567f" type="text" value="">
<img alt="..." class="ui-datepicker-trigger" src=
"clock.png" title="..."></div><img alt="" class=
"t-error-icon" id="patternDailyEnd_1470ffb567f_icon" src=
"spacer.gif" style="display: none;"></div>
</td>
<td colspan="1" rowspan="1" xmlns=
"http://www.w3.org/1999/xhtml"><input id="checkbox_1470ffb567f"
name="checkbox_1470ffb567f" type="checkbox"> <img alt="" class=
"t-error-icon" id="checkbox_1470ffb567f_icon" src=
"/mpromoter/assets/8fe900a87e3fabc9/core/spacer.gif" style=
"display: none;"></td>
<td colspan="1" rowspan="1" xmlns=
"http://www.w3.org/1999/xhtml"><input id=
"checkbox_0_1470ffb567f" name="checkbox_0_1470ffb567f" type=
"checkbox"> <img alt="" class="t-error-icon" id=
"checkbox_0_1470ffb567f_icon" src=
"/mpromoter/assets/8fe900a87e3fabc9/core/spacer.gif" style=
"display: none;"></td>
<td colspan="1" rowspan="1" xmlns=
"http://www.w3.org/1999/xhtml"><input id=
"checkbox_1_1470ffb567f" name="checkbox_1_1470ffb567f" type=
"checkbox"> <img alt="" class="t-error-icon" id=
"checkbox_1_1470ffb567f_icon" style="display: none;"></td>
<td colspan="1" rowspan="1"><input id="checkbox_2_1470ffb567f"
name="checkbox_2_1470ffb567f" type="checkbox"> <img alt=""
class="t-error-icon" id="checkbox_2_1470ffb567f_icon" src=
"/mpromoter/assets/8fe900a87e3fabc9/core/spacer.gif" style=
"display: none;"></td>
<td colspan="1" rowspan="1"><input id="checkbox_3_1470ffb567f"
name="checkbox_3_1470ffb567f" type="checkbox"> <img alt=""
class="t-error-icon" id="checkbox_3_1470ffb567f_icon" src=
"/mpromoter/assets/8fe900a87e3fabc9/core/spacer.gif" style=
"display: none;"></td>
<td colspan="1" rowspan="1"><input id="checkbox_4_1470ffb567f"
name="checkbox_4_1470ffb567f" type="checkbox"> <img alt=""
class="t-error-icon" id="checkbox_4_1470ffb567f_icon" src=
"/mpromoter/assets/8fe900a87e3fabc9/core/spacer.gif" style=
"display: none;"></td>
<td colspan="1" rowspan="1"><input id="checkbox_5_1470ffb567f"
name="checkbox_5_1470ffb567f" type="checkbox"> <img alt=""
class="t-error-icon" id="checkbox_5_1470ffb567f_icon" src=
"/mpromoter/assets/8fe900a87e3fabc9/core/spacer.gif" style=
"display: none;"></td>
<td colspan="1" rowspan="1" xmlns=
"http://www.w3.org/1999/xhtml">
<a href="#" id="removerowlink_1470ffb567f"><img alt="" src=
"/mpromoter/assets/8fe900a87e3fabc9/ctx/images/delete.ico"
title="Remove"></a>
</td>
</tr>
<tr class="t-forminjector" id="rowInjector">
<td></td>
</tr>
</tbody>
</table>
当我复制的XPath那么它看起来像这样：//*[@id="checkbox_1_1470ffb567f"]
这复选框的id是不同的，每次（到底这些数字变化每当时间我打开该页面。）但checkbox_1部分是相同的。