我有一个类似于
$hash{$kayA}{$keyB}{val=>$value};我需要把这个放到一个html表中,TD包含$keyA需要一个基于$keyB的键数的行距。
因此,输出可能如下所示
<html>
<body>
<table border='1'>
<tr><th colspan='2' >Col A</th><th>Col B</th><th>Value</th></tr>
<tr>
<td rowspan='2'><input name='myButton' type= "radio" id ="R1"></td>
<td rowspan='2'> this is first kay</td>
<td> this is second key 1</td><td>Value 1</td>
</tr>
<tr>
<td>this is second key 2</td><td>Value 2</td>
</tr>
</table>
</body>
</html>这就是我的perl脚本所得到的,我正在为如何将tr放在正确的位置而苦苦思索
#!/usr/bin/perl
$hash{$kayA}{$keyB}{val=>$value};
my $TabPrt = "<table><tr><th>Col A></th><th>Col B</th><th>Value</th></tr>";
for my $keyA (sort keys %hash)
{
my $Row = scaler keys %{$hash}{kayA};
$Row = "rowspan='$Row'";
$TabPrt = $TabPrt. "<tr> <td><input name='myButton' type= "radio" id ="R1"></td><td $Row></td>";
for my $keyB (sort keys %{$hash}{$keyA}
{
my $val = hash{$kayA}{$keyB}{val};
$TabPrt = $TabPrt . " <td>$keyB</td><td>$val</td>"
}
}
$TabPrt = $TabPrt . "</tr></table>"; 发布于 2013-01-04 02:59:52
我既不太了解您的数据结构,也不太了解您的代码。
这个$hash{$kayA}{$keyB}{val=>$value};可以编译,但在Perl中没有实际意义。
另外,这一行是有问题的:
$TabPrt = $TabPrt. "<tr> <td><input name='myButton' type= "radio" id ="R1"></td><td $Row></td>";它不会编译,因为字符串"<tr> <td><input name='myButton' type= "正好在radio之前终止。我想你的意思是
$TabPrt .= q(<tr><td><input name="myButton" type="radio" id ="R1"></td><td>$Row</td>);使用q()或qq() (插值)引号运算符,对包含'或"字符的字符串进行引号。
我假设您希望您的表呈现为
+----------------------------------+------------------------+---------+
| Col A | Col B | Value |
+==========+=======================+========================+=========+
| o Button | this is the first key | this is the second key | Value 1 |
| | +------------------------+---------+
| | | this is the second key | Value 2 |
+----------+-----------------------+------------------------+---------+现在让我们假设您的散列如下所示
my %hash = (
key1 => { A => "val1", B => "val2" },
key2 => { C => "val1", D => "val2" },
);然后,我们可以遍历这个散列并构造HTML:
sub make_table_corpus {
my ($hash) = @_;
my $html = "";
for my $key (sort keys %$hash) {
my $sub_hash = $hash->{$key};
# first: how many rows will this key span?
my $rowspan = keys %$sub_hash;
# then: prepare all the secondary keys. Will return HTML fragments:
my @secondary = prep_secondary_keys($sub_hash);
$html .= html("tr", {},
html("td", {rowspan => $rowspan}, " o Button "),
html("td", {rowspan => $rowspan}, $key),
# put the first secondary key here
shift @secondary,
);
# append the other secondary keys:
$html .= html("tr", {}, $_) for @secondary;
}
return $html;
}
# emits html fragments of key-value pairs, as <td> cells.
sub prep_secondary_keys {
my ($hash) = @_;
map { html("td", {}, $_) . html("td", {}, $hash->{$_}) }
sort keys %$hash;
}
# creates a html fragment
sub html {
my ($name, $attr, @childs) = @_;
my $attrstring = "";
while (my ($attname, $value) = each %$attr) {
$value =~ s/"/"/g;
$attrstring .= qq( $attname="$value");
}
return join "", qq(<$name$attrstring>), @childs, qq(</$name>);
}然后:
print make_table_corpus(\%hash);使用上面的散列,这将产生如下输出
<tr>
<td rowspan="2"> o Button </td>
<td rowspan="2">key1</td>
<td>A</td>
<td>val1</td>
</tr>
<tr>
<td>B</td>
<td>val2</td>
</tr>
<tr>
<td rowspan="2"> o Button </td>
<td rowspan="2">key2</td>
<td>C</td>
<td>val1</td>
</tr>
<tr>
<td>D</td>
<td>val2</td>
</tr>(当然,没有刻意)
我所做的不同之处
mistakes)
use strict; use warnings是用来警告错误的)。这样,我们就可以很容易地将第一个HTML片段放到第一行。html sub,以避免在源代码中出现过多的引号问题。虽然这不能替代模板系统,但它使生活变得更简单,并为错误引入了单点故障,这使得问题更容易修复。从这里开始,扩展解决方案以打印出表头并生成有效的HTML表是很简单的一步。
https://stackoverflow.com/questions/14144196
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