Webware for Python

Hallo,
Bogdan hat gesagt: // Bogdan wrote:

> from WebKit.Page import Page
> from Cheetah.Template import Template
> import MySQLdb
> 
> tempDef="""
...
> <TABLE bgcolor="#07e1f9" width=80% align="center">
> <form action="index.py" method=POST enctype="multipart/form-data">
> <input type="text" name="filename"><BR>
> <input type="SUBMIT" name="_action_" value="addrec">
> </form>
> </body></html>
> """
> 
> class index(Page):
>     def __init__(self):
>         Page.__init__(self)
>         self.compTemplate = Template(tempDef)
>     def title(self):
>         return "Test!"
>         
>     def writeContent(self):
>         conn=MySQLdb.connect(db="test", user="root")
>         cur=conn.cursor()
>         cur.execute("""SELECT * from userlist;""")
>         t = self.compTemplate
>         t.row = cur.fetchall()
>         self.writeln(t)
>         cur.close()
>         conn.close()
>         
Your Page-class needs to know about its possible (re)actions to
form input. So just define an "action" and append it to the list of
Page actions like: 

	def actions(self):
		return Page.actions(self) + ['addrec']

	def addrec(self):
		# DB setup...
		req = self.request()
		filename = req.value("filename", None)
		if filename:
			cur.execute('insert into userlist values % ;' %	filename)
		self.writeBody()
ciao
-- 
 Frank Barknecht                               _ ______footils.org__

It looks good, but if you want to use the built-in action handler then
you have to make your SUBMIT button _action_ACTIONAME
like:
<input type="SUBMIT" name="_action_addrec" value="Add A Record">

and then in the servlet:

def actions(self):
		return ['addrec']


def preAction(self,actionName):
	'''Run some code before ANY action'''
	if (self.request().hasField('curPos')):
		curPos = int(self.request().field('curPos'))
	else:
		curPos = 0

def postAction(self,actionName):
	'''Run code AFTER any action'''
	pass

def addrec(self):
	self.writeln(''recodrd added'')


-Aaron
Bogdan wrote:
> I have Webaware 0.7 running on Apache 1.3.26 on Debian linux. I'm a
> newbie in python and webware, and it is difficult for me to browse the
> sources, so can somebody give me an example and/or advice about how to
> handle forms. Here is my code:
> 
> from WebKit.Page import Page
> from Cheetah.Template import Template
> import MySQLdb
> 
> tempDef="""
> <TABLE bgcolor="#07e1f9" width=80% align="center">
> #for $i in $row
>     <tr>
>     #for $k in $i
>         <td>$k</td>
>     #end for
>     </tr>
> #end for
> </table>
> <BR>
> <form action="index.py" method=POST enctype="multipart/form-data">
> <input type="text" name="filename"><BR>
> <input type="SUBMIT" name="_action_" value="addrec">
> </form>
> </body></html>
> """
> 
> class index(Page):
>     def __init__(self):
>         Page.__init__(self)
>         self.compTemplate = Template(tempDef)
>     def title(self):
>         return "Test!"
>         
>     def writeContent(self):
>         conn=MySQLdb.connect(db="test", user="root")
>         cur=conn.cursor()
>         cur.execute("""SELECT * from userlist;""")
>         t = self.compTemplate
>         t.row = cur.fetchall()
>         self.writeln(t)
>         cur.close()
>         conn.close()
>         
> 
> 
> 
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> 		req = self.request()
> 		filename = req.value("filename", None)

I get the same result with code

Page.request(self).field('user')

Is it safe to use my code? May be it is not good to refer to parent's class method instead it's child implementation?

Hallo,
Bogdan hat gesagt: // Bogdan wrote:

> > 		req = self.request()
> > 		filename = req.value("filename", None)
> 
> I get the same result with code
> 
> Page.request(self).field('user')

field() is similar to value() but doesn't include cookie values, which
is fine. 

> Is it safe to use my code? May be it is not good to refer to
> parent's class method instead it's child implementation?

I think, if you didn't re-define request() in your Page child class,
Page.request() will get called anyways. 

ciao
-- 
 Frank Barknecht                               _ ______footils.org__

>
>
>I think, if you didn't re-define request() in your Page child class,
>Page.request() will get called anyways. 
>

You should use self.request()

this will give you the option in the future to override the behavior of 
request if you need to.

-Aaron

>  
>