我希望能够删除复选框选择的行,但是当我单击“删除选定的内容”时,网页上的表和MySQL数据库均保持不变。如何从网页和数据库中获取要删除的行?
编辑:尽管选择了多个复选框,或者选择不在第一行的另一个复选框,我现在仍可以删除行,但仅删除第一行。另外,如果要删除其他条目,则必须先刷新页面,然后再删除另一个条目。
datatable.php
<div class="row well">
<a type="button" class="delete_all btn btn-primary pull-right">Delete Selected</a>
</div>
<script type="text/javascript">
$(document).ready(function($)
{
function create_html_table (tbl_data) {
tbl +='<table>';
tbl +='<thead>';
tbl +='<tr>';
tbl +='<th rowspan="3"><input type="checkbox" id="master"></th>';
// More table headers
tbl +='</tr>';
tbl +='</thead>';
tbl +='<tbody>';
$.each(tbl_data, function(index, val)
{
var row_id = val['row_id'];
//loop through ajax row data
tbl +='<tr id="row" row_id="'+row_id+'">';
tbl +='<td><input type="checkbox" class="sub_chk"></td>';
tbl +='<td>'+(index + 1)+'</td>';
tbl +='<td><div col_name="filename">'+val['filename']+'</div></td>';
// More data
tbl +='</tr>';
});
tbl +='</tbody>';
tbl +='</table>';
}
var ajax_url = "<?php echo APPURL;?>/ajax.php" ;
// Multi-select
$(document).on("click","#master", function(e) {
if($(this).is(':checked',true))
{
$(".sub_chk").prop('checked', true);
}
else
{
$(".sub_chk").prop('checked',false);
}
});
//Delete selected rows
$(document).on('click', '.delete_all', function(event)
{
event.preventDefault();
var ele_this = $('#row') ;
var row_id = ele_this.attr('row_id');
var allVals = [];
$(".sub_chk:checked").each(function()
{
allVals.push(row_id);
});
if(allVals.length <=0)
{
alert("Please select row.");
}
else {
var data_obj=
{
call_type:'delete_row_entry',
row_id:row_id,
};
ele_this.html('<p class="bg-warning">Please wait....deleting your entry</p>')
$.post(ajax_url, data_obj, function(data)
{
var d1 = JSON.parse(data);
if(d1.status == "error")
{
var msg = ''
+ '<h3>There was an error while trying to add your entry</h3>'
+'<pre class="bg-danger">'+JSON.stringify(data_obj, null, 2) +'</pre>'
+'';
}
else if(d1.status == "success")
{
ele_this.closest('tr').css('background','red').slideUp('slow');
}
});
}
});
});
</script>
ajax.php
//--->Delete row entry > start
if(isset($_POST['call_type']) && $_POST['call_type'] =="delete_row_entry")
{
$row_id = app_db()->CleanDBData($_POST['row_id']);
$q1 = app_db()->select("select * from data where row_id='$row_id'");
if($q1 > 0)
{
//found a row to be deleted
$strTableName = "data";
$array_where = array('row_id' => $row_id);
//Call it like this:
app_db()->Delete($strTableName,$array_where);
echo json_encode(array(
'status' => 'success',
'msg' => 'deleted entry',
));
die();
}
}
//--->Delete row entry > end
我见过类似this one之类的其他类似问题,但我认为它不适用于我的代码。
我的输出:
答案 0 :(得分:0)
要实现您想要的目标,您必须以正确的方式选择好的元素。例如,HTML id
必须是唯一的,因此给所有元素相同的id="row"
是行不通的。使用您的课程就足够了。然后,您必须考虑到each
将对所有选择的元素分别执行该函数,因此,如果要对每个元素执行操作,则所有代码都必须在内部。
我通过摆脱allVals
变量来优化了一些代码,如果它的唯一目的是测试是否选择了行,则可以直接在选择的内容上测试.length
。我重命名了变量,以便更清楚地知道是什么。
这个问题也不是很清楚,是否应该在按钮或每一行中显示“请稍候...删除您的条目”文本,我以为它在按钮中,它将帮助您区分所有元素的选择方式。
//Delete selected rows
$(document).on('click', '.delete_all', function(event)
{
event.preventDefault();
//'click' is called on the button, so 'this' here will be the button
var button = $(this) ;
var checked_checkboxes = $(".sub_chk:checked");
if(checked_checkboxes.length <=0)
{
alert("Please select row.");
}
else {
button.html('<p class="bg-warning">Please wait....deleting your entry</p>');
//next code will be executed for each checkbox selected:
checked_checkboxes.each(function(){
var checkbox = $(this);
var row_id = checkbox.attr('row_id');
var data_obj=
{
call_type: 'delete_row_entry',
row_id: row_id,
};
$.post(ajax_url, data_obj, function(data)
{
var d1 = JSON.parse(data);
if(d1.status == "error")
{
var msg = ''
+ '<h3>There was an error while trying to add your entry</h3>'
+'<pre class="bg-danger">'+JSON.stringify(data_obj, null, 2) +'</pre>'
+'';
//you still have to do something with your message, keeping in mind that a separate message will be generated for each separate $.post (one is emitted for each checked checkbox)
}
else if(d1.status == "success")
{
checkbox.closest('tr').css('background','red').slideUp('slow');
}
});
});
}
});