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Re: I love perl but....
by Beatnik (Parson) on May 22, 2001 at 14:09 UTC
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Re: I love perl but....
by jeroenes (Priest) on May 22, 2001 at 14:10 UTC
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I guess we share our love ;-).
Embedding perl in html can be done, but the reverse is more
versatile. Generate HTML with perl! Look at CGI and
the Template toolkit for convenient
methods.
Including is no problem at all. Example:
open INCL, "path_to_include_file";
{
local $/ = undef;
print <INCL>;
}
close INCL;
The local and {} make the code cleaner, it works even without
them.
On unix, you can also use the following shorthand:
print `cat path_to_include_file`;
Hope this helps,
Jeroen
"We are not alone"(FZ)
Fixed error. See Why or why not? - local undef $/ | [reply]
[d/l]
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Re:(Zigster) I love perl but....
by zigster (Hermit) on May 22, 2001 at 14:45 UTC
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Install Active Perl on your NT box and you get PerlScript Quote:
PerlScript is an ActiveX scripting engine that allows you to use Perl with any ActiveX scripting host. At this time, ActiveX scripting hosts include:
- Internet Information Server 3.0/4.0
- Peer Web Services 3.0/4.0
- Microsoft Internet Explorer 4.0x
- Windows Scripting Host
In truth tho, perl is a very flexible language as you will often see on this site TIMTOWTDI (there is more than one way to do it) your are placing the solution before the problem. ASP and the like are cool SOLUTIONS but so is perl it's SOLUTIONS are just different. I would suggest taking a look at perl script. It will allow you to map your current methodology. I would futher sugest taking a fresh look at your PROBLEMS and see how you may solve them in perl. The rest of this thread gives some excellent advice regarding using perl with web based applications.
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Zigster | [reply] |
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Zigster,
Perhaps it is just my local configuration but I've found PerlScript to be very slow. I'd assumed that it was suffering from reloading the interpreter everytime the page was displayed - i.e. the problem that mod_perl fixes at the server end. Do you find the performance to be acceptable?
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To be honest I have not used perlscript in anger. I use CGI where I can. I have played with it enuff to know it exists and may help out in this circumstance.
--
Zigster
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Re: embedding PERL in HTML
by gregor42 (Parson) on May 22, 2001 at 19:25 UTC
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the only problem i have with Perl is its lack of web oriented functions and abilities (like embedding perl in html, 'includes' as in asp and php etc)
Well I won't belabor the point of "lack of web oriented functions" other than to suggest looking at http://search.cpan.org and putting HTML into the search field.
However, I will underline a point made briefly by my fellow monks above:
Mixing Programming Code & HTML is a Bad Idea.
There are a lot of reasons for this, but the basic idea is that HTML coders & programmers are not usually the same people. They have different skill-sets & pay-scales.
Most companies are smart enough not to waste a programmer's salary to have someone make changes to web pages that are buried in code.
Further, it is an unofficial, but still hard & fast rule
that programmers are not designers & designers are not programmers. As such you will find that companies tend to go outside to agencies when giving the web site a 'face lift.' This introduces a lot of people with no business having access to the programming code mucking around in the HTML.
Active Server Pages & Java Server Pages have the ability to embed code directly in them. However you will notice that JSP aithors are encouraged to encapsulate their code in JavaBeans to keep the HTML clean and ASP is currently migrating towards the '.NET' paradigm which is similar.
So I would also advise you, as others have above, to have a look at the Module in CPAN called HTML::Template. It's a very good starting point for thinking in terms of separation of logic & content with PERL.
Wait! This isn't a Parachute, this is a Backpack! | [reply] |
Re: I love perl but....
by Hero Zzyzzx (Curate) on May 22, 2001 at 18:19 UTC
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If you really want to bump up your perl/HTML skillz, check out HTML::Template. I love this module. It's very simple, and it allows you to plug perl output into pure HTML files.
Very elegant and powerful, and works EXCELLENTLY with mod_perl. It's not embedding perl in HTML, but I think it makes for MUCH more maintainable and understandable web apps by separating code from HTML clearly.
Using HTML::Template, you don't end up with nasty code that mixes HTML in to perl scripts, seriously impeding maintability.
Update:Umm, yeah. . . what gregor42 said below. . .
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Re: I love perl but....
by runrig (Abbot) on May 22, 2001 at 19:57 UTC
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Another interesting alternative is HTML::Tree. There's an old version on CPAN, but I don't know why the author doesn't put the new version there. It's a module that allows you to create templates kind of like HTML::Template except that the template is 100% valid HTML, thereby completely separating your code and presentation.
Update: Hero Zzyzzx is right, HTML::Template could be made valid HTML, but then your template is even
uglier than before. And viewing the file in a browser, you have blank areas where data
would go (unless you actually run the 'program'), whereas with HTML::Tree you can view real
sample data (in a WYSIWYG sort of way). | [reply] |
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Not to be nitpicky, but you can have 100% valid HTML with HTML::Template too. You can embed the variables, if-thens, and loops in HTML comments. You can then run the HTML through a validator, if you desire.
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Re: I love perl but....
by ozzy (Sexton) on May 22, 2001 at 20:52 UTC
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I find it that i have more fun with Perl than JSP/Servlets.
Perl has just as many ASP/JSP style functions that make my life much easier.
HTML::Mason
HTML::Embperl
HTML::Template
Are great templating systems, which will make your life just as easy as those ASP/JSP style functions.
-= Ozzy =- | [reply] |
Re: I love perl but....
by Anonymous Monk on May 22, 2001 at 21:36 UTC
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Re: I love perl but....
by blue_cowdawg (Monsignor) on May 23, 2001 at 00:44 UTC
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I'm sorry, but you must not have checked out the CPAN site very closely. There are scads of (well maybe not scads... how many is a scad anyway...) ways to embed Perl inside of HTML.
As far as ASP goes I must say that in my experience I haven't really seen anything done with ASP that either embedded perl, mod_perl, or just plain CGI couldn't accomplish.
I also seem to remember that benchmark comparisons between PHP and Perl seemed to favor Perl FWIW.
Check out the following on CPAN:
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HTML::EP
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HTML::Mason
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Apache::ASP
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Peter L. Berghold --- Peter@Berghold.Net
"Those who fail to learn from history are condemned to repeat it."
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Re: I love perl but....
by tachyon (Chancellor) on May 22, 2001 at 22:46 UTC
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You are aware of CGI.pm I presume.
After a review of the free standard modules, what functionality
do you miss???
Here is a list of web related free modules that come with
the *standard* distribution of perl. Sincere apologies to
the hundred of authors of thousands of modules not
explicitly mentioned. For details see http://www.CPAN.org
NB: CPAN is the Comprehensive Perl Archive Network.
tachyon
Benchmark
Bundle
DBD
CSV
mysql
DBI
LWP
Business
CreditCard
Carp
CGI
Apache
Carp
Cookie
Fast
Imagemap
Pretty
Push
Screen
Switch
XMLForm
Chart
Class
Compress
Zlib
Config
CPAN
Crypt
Date
Calc
Format
Manip
Parse
DB
DBD
ADO
CSV
DB2
dbd-sybase
File
Multiplex
mysql
ODBC
Oracle
Proxy
Sybase
DBI
DBD
FAQ
Format
ProxyServer
Shell
W32ODBC
DB_File
Digest
DirHandle
Fatal
Fcntl
File
Basename
CheckTree
Compare
Copy
CounterFile
DosGlob
Find
Glob
Listing
Path
Recurse
Slurp
Spec
Functions
Mac
OS2
Unix
VMS
Win32
stat
Tools
FileCache
FileHandle
Filter
cpp
decrypt
exec
sh
tee
Util
Call
Exec
FindBin
Font
AFM
Graph
Kruskal
HTML
AsSubs
Element
Entities
Filter
Form
FormatPS
Formatter
FormatText
HeadParser
LinkExtor
Parse
Parser
Stream
Template
TokeParser
TreeBuilder
HTTP
Cookies
Daemon
Date
Headers
Util
Message
Negotiate
Request
Common
Response
Status
I18N
Image
Size
IO
AtomicFile
Dir
File
Handle
Lines
Pipe
Poll
Scalar
ScalarArray
Seekable
Select
Socket
INET
UNIX
Stringy
Wrap
WrapTie
IPC
Locale
Country
Language
LWP
Debug
MediaTypes
MemberMixin
Protocol
RobotUA
Simple
UserAgent
Mail
POP3Client
Math
MD5
MIME
Base64
Lite
QuotedPrint
MLDBM
Mysql
NDBM_File
Net
Bind
Resolv
Utils
Cmd
DNS
Header
Packet
Question
Resolver
RR
A
AAAA
AFSDB
CNAME
EID
HINFO
ISDN
LOC
MB
MG
MINFO
MR
MX
NAPTR
NIMLOC
NS
NSAP
NULL
PTR
PX
RP
RT
SOA
SRV
TXT
X25
Update
Domain
DummyInetd
FTP
hostent
LDAP
BER
Constant
Entry
FAQ
Filter
LDIF
Message
Reference
Schema
Search
Util
netent
Netrc
NNTP
PH
Ping
POP3
protoent
servent
SMTP
SNPP
Telnet
Time
Whois
Netscape
History
HistoryURL
News
Newsrc
NNTPClient
POE
POSIX
PPM
SOAPClient
SOAPServer
SGMLS
Output
Refs
SHA
Shell
SOAP
Defs
Envelope
EnvelopeMaker
GenericHashSerializer
GenericInputStream
GenericScalarSerializer
OutputStream
Packager
Parser
HTTP
Apache
CGI
Client
Server
TypeMapper
Socket
Sort
PolySort
SQL
Eval
Statement
Statistics
Storable
String
Sybase
BCP
Symbol
Sys
Hostname
Syslog
Test
Harness
Text
Abbrev
CSV_XS
German
Metaphone
ParseWords
Soundex
Striphigh
Tabs
Template
Vpp
Wrap
Thread
Queue
Semaphore
Signal
Specific
Tie
Time
gmtime
HiRes
Local
localtime
Period
tm
Zone
Tk
User
Win32
Win32API
WWW
RobotRules
AnyDBM_File
Search
AltaVista
AdvancedNews
AdvancedWeb
Careers
Intranet
News
Web
Classifieds
Employment
Crawler
Dice
EuroSeek
Excite
News
ExciteForWebServers
Fireball
FolioViews
Google
Gopher
GoTo
HeadHunter
HotFiles
Infoseek
Companies
Email
News
Web
Livelink
LookSmart
Lycos
Pages
Sites
MetaCrawler
Metapedia
Monster
MSIndexServer
NetFind
NorthernLight
Null
PLweb
Search97
SFgate
Simple
Snap
Test
Verity
VoilaFr
WebCrawler
Classifieds
Employment
ZDNet
SearchResult
XML
DOM
Element
Parser
Expat
PPD
PPMConfig
ValidatingElement
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Re: I love perl but....
by Anonymous Monk on May 23, 2001 at 01:37 UTC
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There are lots of different solutions to this issue,
depending on what problem you are addressing.
here's a couple of pretty darn good ones
http://www.template-toolkit.org/
http://perl.apache.org/embperl/
among others
hth
--mark
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