我有类似
的哈希 $hash{$kayA}{$keyB}{val=>$value};
我需要把它放到一个html表中,包含$ keyA的TD需要基于$ keyB键的数量的行数
所以输出可能看起来像
<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>
就我的perl脚本而言,我正在努力将tr放到正确的位置
#!/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 = $TabPrt . "</tr></table>";
答案 0 :(得分:2)
我不太了解您的数据结构和代码。
这个$hash{$kayA}{$keyB}{val=>$value};
编译,但在Perl中没有实际意义。
此外,这条线路有问题:
$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= "
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)引号运算符引用包含'
或"
个字符的字符串。
我假设您希望表格呈现为
+----------------------------------+------------------------+---------+
| 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哈希看起来像
my %hash = (
key1 => { A => "val1", B => "val2" },
key2 => { C => "val1", D => "val2" },
);
然后我们可以迭代这个哈希并构造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);
使用上面的哈希,这将产生类似
的输出<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>
(当然没有意图)
use strict; use warnings
以警告错误和错误)html
子,以避免源代码中出现过多的引用问题。虽然这不能取代模板系统,但它会让生活变得更轻松,并为错误引入单点故障,这使得问题更容易解决。扩展解决方案以打印出表头,并生成有效的HTML表格是一件非常简单的步骤。