Transfer data from webpage form to database

P

Pete.....

Hi all.
I have made a webpage where there is a webform where people can fill in
their personel information:

The code is below:


I want to transfer the data to a postgreSQL database ( I have allready made
the database with the neccesary tables, and I know how to connect to it )
but I really have no idea how I can transfer the data from the webform to
the database.

If any can help me I will be more than pleased... thanks for your help...

<html>

<head>

<title> Adminperson </title>

</head>

<body bgcolor="#0479ff">

<h1><p align="center">Insert Person</h1></p>

<hr>

<form action="default.asp" method="post">
<p>Name:<br><input type="text" name="name"></p>
<p>Surname:<br><input type="text" name="surnavn"></p>
<p>Username:<br><input type="text" name="usernavn"></p>
<p>Password:<br><input type="text" name="password"></p>
<p>Adresse:<br><input type="text" name="adresse"></p>
<p>Zipcode:<br><input type="text" name="zipcode"></p>
<p>City:<br><input type="text" name="city"></p>
<p>Phone:<br><input type="text" name="phone"></p
<p>Mail:<br><input type="text" name="mail"></p>


<p> What is your profession? <p>
<INPUT TYPE=CHECKBOX NAME="Profession" VALUE="Student" CHECKED> Student
<INPUT TYPE=CHECKBOX NAME="Profession" VALUE="Teacher" CHECKED> Teacher
<INPUT TYPE=CHECKBOX NAME="Profession" VALUE="Teacher Assistent" CHECKED>
Teacher Assistent
<p><input type="submit" value="Submit"></p>
</body> </html>
 
J

Jerry Sievers

Pete..... said:
Hi all.
I have made a webpage where there is a webform where people can fill in
their personel information:

The code is below:


I want to transfer the data to a postgreSQL database ( I have allready made
the database with the neccesary tables, and I know how to connect to it )
but I really have no idea how I can transfer the data from the webform to
the database.
Click to expand...

Your sample form shows being posted to an ASP file which you are going
to change to a Python.cgi script, right?

#!/usr/local/bin/python

print 'content-type: text/plain\n'

import cgi
import someDatabaseAPI

form = cgi.FieldStorage()

someDatabaseAPI.connect()

someDatabaseAPI.query("""
insert into foo
values ('%s', '%s')
""" % (form[key1].value, form[key2].value))

# where key1, key2... are the field names in HTML form

Have a look at the cgi Python module where you will learn all about
this.

HTH
 
P

Pete.....

Hi, yeah It's try I want to change it to a python.cgi.script. And thanks for
your input.....

I use the api pgsql
So the first thing I do is to import the following and connect to the
server:

#!/pack/python-2.3.2/bin/python2.3
from pyPgSQL import PgSQL
import cgi
import cgitb
cgitb.enable()

form = cgi.FieldStorage() ( I added this )
connect = PgSQL.connect(user="vvvvv", password="zzzzz", host="xxx.xxx.xx",
database="yyyyy")

Do I then have to write:

PgSQL.query(''' INSERT into form
Select persons.idpersons, person.username,
persons.surname, phone.phone (And so on ) ( its what the specific tables
are called in my database)
From persons, phone (
And so on )
Where persons.name = 'Name'%s
AND persons.surname ='Surname'%s
AND persons.username = 'Username'%s '''
(And so on with the rest)
% (form['name'].value, form['surname'].value,
form['username'].value))

I dont think I get it quite right, any help would be highly appreciated.
Thanks for all help...


Below is the code from my webpage form:

<form action="default.asp" method="post">
<p>Name:<br><input type="text" name="name"></p>
<p>Surname:<br><input type="text" name="surnavn"></p>
<p>Username:<br><input type="text" name="username"></p>
<p>Password:<br><input type="text" name="password"></p>
<p>Adresse:<br><input type="text" name="adresse"></p>
<p>Zipcode:<br><input type="text" name="zipcode"></p>
<p>City:<br><input type="text" name="city"></p>
<p>Phone:<br><input type="text" name="phone"></p
<p>Mail:<br><input type="text" name="mail"></p>


<p> What is your profession? <p>
<INPUT TYPE=CHECKBOX NAME="Profession" VALUE="Student" CHECKED> Student
<INPUT TYPE=CHECKBOX NAME="Profession" VALUE="Teacher" CHECKED> Teacher
<INPUT TYPE=CHECKBOX NAME="Profession" VALUE="Teacher Assistent"
CHECKED> Teacher Assistent
<p><input type="submit" value="Submit"></p>
</body> </html>'''
 
J

Jerry Sievers

Pete..... said:
Hi, yeah It's try I want to change it to a python.cgi.script. And thanks for
your input.....

I use the api pgsql
So the first thing I do is to import the following and connect to the
server:

#!/pack/python-2.3.2/bin/python2.3
from pyPgSQL import PgSQL
import cgi
import cgitb
cgitb.enable()

form = cgi.FieldStorage() ( I added this )
connect = PgSQL.connect(user="vvvvv", password="zzzzz", host="xxx.xxx.xx",
database="yyyyy")

Do I then have to write:

PgSQL.query(''' INSERT into form
Select persons.idpersons, person.username,
persons.surname, phone.phone (And so on ) ( its what the specific tables
are called in my database)
From persons, phone (
And so on )
Where persons.name = 'Name'%s
AND persons.surname ='Surname'%s
AND persons.username = 'Username'%s '''
(And so on with the rest)
% (form['name'].value, form['surname'].value,
form['username'].value))

I dont think I get it quite right, any help would be highly appreciated.
Thanks for all help...
Click to expand...

It looks to me like the part here that you don't understand is how to
interpolate your form data into the string for the database query.

You should study up on the % string formatting operator in the Python
docs.

I'll throw you a bone here;

"""
%s %s %s
""" % (form[key1].value, form[key2].value, form[keyN].value)

Each of those %s tokens is going to be replaced with one of the values
in the tuple right of the % operator.

If you want to pile the form values into a dict and then use symbolic
names in the string...

dict = {}
for key in form:
dict[key] = form[key].value

"""
%(key1)s %(key2)s...
""" % dict

Maybe there is a function in the cgi module that will make the dict
for you? I am not sure.

Have fun!
 
P

Pete.....

Hi again and thanks.
I think I understand the meaning of string formatting operators, I also
understand the meaning with % (form['name'].value, form['surname'].value,
form['username'].value)) And that it is a dictionary that I use.

The thing I find really hard to understand is how I can send the data from
the webform to my postgresql database. I cant find the right commands, i
been searching the web for days now without luck.

PgSQL.query(''' INSERT into form Select persons.idpersons, person.username,
persons.surname, phone.phone (And so on ) ( its what the specific tables is
called in my db)
From persons, phone( And so on )
Where persons.name = 'Name'%s
AND persons.surname ='Surname'%s
AND persons.username = 'Username'%s ''' (And so on with the rest)

I dont really know if I have to write Pgsql.query("INSERT into form
.........................
or if I have to write something else.
I know that I have to take the input from my webform, and store each input
( with each input I mean what the user types in each field, could be the
name, the username etc) in a "variable" so that I can put it into the right
place in the db.
I can see that I do this by using % (form['name'].value,
form['surname'].value, form['username'].value))
But I dont know how I put the data form['name].value in to my database in
the table persons.name.

Sorry for all this questions, just getting really confused with this little
project of mine, thinks its fun, but I just cant figure it out anymore, and
I cant find any info I can use on the web....

Thanks for taking your time to read this....


Jerry Sievers said:
Pete..... said:
Hi, yeah It's try I want to change it to a python.cgi.script. And thanks
for
your input.....

I use the api pgsql
So the first thing I do is to import the following and connect to the
server:

#!/pack/python-2.3.2/bin/python2.3
from pyPgSQL import PgSQL
import cgi
import cgitb
cgitb.enable()

form = cgi.FieldStorage() ( I added this )
connect = PgSQL.connect(user="vvvvv", password="zzzzz",
host="xxx.xxx.xx",
database="yyyyy")

Do I then have to write:

PgSQL.query(''' INSERT into form
Select persons.idpersons, person.username,
persons.surname, phone.phone (And so on ) ( its what the specific tables
are called in my database)
From persons, phone
(
And so on )
Where persons.name = 'Name'%s
AND persons.surname ='Surname'%s
AND persons.username = 'Username'%s '''
(And so on with the rest)
% (form['name'].value, form['surname'].value,
form['username'].value))

I dont think I get it quite right, any help would be highly appreciated.
Thanks for all help...
Click to expand...

It looks to me like the part here that you don't understand is how to
interpolate your form data into the string for the database query.

You should study up on the % string formatting operator in the Python
docs.

I'll throw you a bone here;

"""
%s %s %s
""" % (form[key1].value, form[key2].value, form[keyN].value)

Each of those %s tokens is going to be replaced with one of the values
in the tuple right of the % operator.

If you want to pile the form values into a dict and then use symbolic
names in the string...

dict = {}
for key in form:
dict[key] = form[key].value

"""
%(key1)s %(key2)s...
""" % dict

Maybe there is a function in the cgi module that will make the dict
for you? I am not sure.

Have fun!
Click to expand...
 
A

Alan Kennedy

[Pete]
> [snip]
> Below is the code from my webpage form:
>
> <form action="default.asp" method="post">
Click to expand...

You should note that the action attribute of a form must contain the URL
to which the form variables will be POSTed.

If you are writing a python CGI script, then action="default.asp" is
almost certainly wrong, unless you have called your python script
"default.asp".

The URL for your python script is the value that should go in the action
attribute, like so

<form action="http://mydomain.com/cgi-bin/my_cgi_script.py" method="post">

or you could leave out the server name bit.

<form action="/cgi-bin/my_cgi_script.py" method="post">

HTH,
 
J

Jerry Sievers

Pete..... said:
Hi again and thanks.
I think I understand the meaning of string formatting operators, I also
understand the meaning with % (form['name'].value, form['surname'].value,
form['username'].value)) And that it is a dictionary that I use.

The thing I find really hard to understand is how I can send the data from
the webform to my postgresql database. I cant find the right commands, i
been searching the web for days now without luck.

PgSQL.query(''' INSERT into form Select persons.idpersons, person.username,
Click to expand...

You mean that whatever docs for the PgAPI that you are using don't
explain?

I am using pygresql. There are others.

from pgdb import connect

conn = connect(database = 'db', username = 'user', password = 'passwd')
cursor = conn.cursor()

cursor.execute("insert into foo values (1)")
conn.commit()

That's about all the help I can give you.

Good luck
 
A

Andrew James

Pete,
What you're looking for is an INSERT SQL query. You can find the basic
theory and some more advanced bits 'n pieces here (specifically
PostgreSQL):

http://www.commandprompt.com/ppbook/index.lxp?lxpwrap=x5504.htm

The question that you're asking is so vague that you should think about
reading up on SQL before going any further - you may find yourself
quickly overwhelmed otherwise.

Andrew

[Pete]
[snip]
Below is the code from my webpage form:

<form action="default.asp" method="post">
Click to expand...

You should note that the action attribute of a form must contain the URL
to which the form variables will be POSTed.

If you are writing a python CGI script, then action="default.asp" is
almost certainly wrong, unless you have called your python script
"default.asp".

The URL for your python script is the value that should go in the action
attribute, like so

<form action="http://mydomain.com/cgi-bin/my_cgi_script.py" method="post">

or you could leave out the server name bit.

<form action="/cgi-bin/my_cgi_script.py" method="post">

HTH,
Click to expand...
 
P

Pete.....

First thanks for all your friendly input and for looking at this once
again...

I think I made some progress, but its still not working, so I must still do
something wrong.
Here is how far I have come.

I made an insertintotable script, that I want to run every time a person
presses "The submit button on my webpage" It goes like this:
--------------------------------------------------------------------
#!/pack/python-2.3.2/bin/python2.3

from pyPgSQL import PgSQL
import cgi
import cgitb
cgitb.enable()

form = cgi.FieldStorage()

connect = PgSQL.connect(user="user", password="password", host="host",
database="database")
cur = connect.cursor()
cur.execute('''INSERT INTO persons (name, surname, username, password)
(VALUES(%s,%s, %s, %s)''')
%(form[name].value, form[surname].value, form[username].value,
form[password].value)
---------------------------------------------------------------------------------------------
My question is, do I need more code to tell the program that I want to
transfer the user input ( on my webpage ) to my postgresql database.
---------------------------------------------------------------------------
The code from my webpage is:

#!/pack/python-2.3.2/bin/python2.3

from pyPgSQL import PgSQL
import cgi
import cgitb
cgitb.enable()

print '''

<html>

<head>

<title> Adminperson </title>

</head>

<body bgcolor="#0479ff">

<h1><p align="center">Insert Person</h1></p>

<hr>

<form action="insertintotable.py" method="get">
<p>Name:<br><input type="text" name="name"></p>
<p>Surname:<br><input type="text" name="surnavn"></p>
<p>Username:<br><input type="text" name="usernavn"></p>
<p>Password:<br><input type="text" name="password"></p>
<p><input type="submit" value="Submit"></p>
</body> </html>'''
 
P

Pete.....

The error I get is that when this code starts: %(form[name].value,
form[surname].value, form[username].value, form[password].value)
it says that NameError: name 'name' is not defined
args = ("name 'nama' is not defined",)
which is from the html webpage form code
form action="insertintotable.py" method="get">
<p>Name:<br><input type="text" name="name"></p>

Any ideas ?
Thanks all
 
P

Pete.....

Hi I got that error debugged but, now there is a new one:
12 cur.execute('''INSERT INTO persons (persons.name,
persons.surname, persons.username, persons.password) VALUES %s,%s, %s, %s
''' %(form['name'].value, form['surname'].value, form['username'].value,
form['password'].value))

13

cur = <pyPgSQL.PgSQL.Cursor instance>, cur.execute = <bound method
Cursor.execute of <pyPgSQL.PgSQL.Cursor instance>>, form =
FieldStorage(None, None, [MiniFieldStorage('name...name', 'sa'),
MiniFieldStorage('password', 'a')]), ].value = [MiniFieldStorage('name',
's'), MiniFieldStorage('surname', 'd'), MiniFieldStorage('username', 'sa'),
MiniFieldStorage('password', 'a')]

/pack/python-2.3.2/lib/python2.3/site-packages/pyPgSQL/PgSQL.py in
execute(self=<pyPgSQL.PgSQL.Cursor instance>, query='INSERT INTO persons
(persons.name, persons.surna...ns.username, persons.password) VALUES s,d,
sa, a ', *parms=())
3070 self.conn.__dict__["inTransaction"] = 0

3071 self.conn._Connection__closeCursors()

3072 raise OperationalError, msg

3073 except InternalError, msg:

3074 # An internal error occured. Try to get to a sane
state.

global OperationalError = <class libpq.OperationalError>, msg =
<libpq.OperationalError instance>


OperationalError: ERROR: syntax error at or near "." at character 29
args = ('ERROR: syntax error at or near "." at character 29\n',)

Cant figure that one out....

Thanks for all help.....
 
M

Mark Roach

Hi I got that error debugged but, now there is a new one:
12 cur.execute('''INSERT INTO persons (persons.name,
persons.surname, persons.username, persons.password) VALUES %s,%s, %s, %s
''' %(form['name'].value, form['surname'].value, form['username'].value,
form['password'].value))
Click to expand...

That syntax doesn't look right. I think you were closer with your
previous attempt. This is slightly more correct

cur.execute('''INSERT INTO persons (name, surname, username, password)
VALUES('%s','%s', '%s', '%s')''' % (form[name].value,
form[surname].value, form[username].value, form[password].value))

(Note the single quotes around the %s)

The real problem with this code is that you are letting the user of your
website inject whatever SQL they want directly into your command. I am
not sure if this works for pypgsql, but with psycopg the safe way to do
this is

insert_command = '''
INSERT INTO persons (name, surname, username, password)
VALUES(%s, %s, %s, %s)
'''
cur.execute(insert_command,
(form[name].value, form[surname].value, \
form[username].value, form[password].value))

I believe this works with other DB API 2.0 compatible modules. This lets
the database module worry about whether "jim's house" needs to be turned
into "jim\\'s house" or "'jim\\'s house'"

HTH

-Mark
 
J

Jerry Sievers

Mark Roach said:
On Wed, 2004-11-24 at 02:16 +0100, Pete..... wrote:

That syntax doesn't look right. I think you were closer with your
previous attempt. This is slightly more correct

cur.execute('''INSERT INTO persons (name, surname, username, password)
VALUES('%s','%s', '%s', '%s')''' % (form[name].value,
form[surname].value, form[username].value, form[password].value))

(Note the single quotes around the %s)

The real problem with this code is that you are letting the user of your
website inject whatever SQL they want directly into your command. I am
not sure if this works for pypgsql, but with psycopg the safe way to do
this is
Click to expand...

If you are using pygresql the execute() method allows an optional dict
as arg2 and if provided, will be quoted according to data types and
the LHS string integrated with the dict as if by the % operator.

cur.execute('query')
cur.execute('query with hand quoted args %s' % (foo))
cur.execute('query with args quoted by API %(name1)s, %(name2)d',dict)

String types will get wrapped in single quotes and have embedded
single quotes escaped, the most common use but other types such as
datetime will get special treatment as well.

I agree with you. Any up to date API should have this capability
which can always be overridded in an extreme case.

Bye
 

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