Re: [Zope] how to check if the ResultSet is null?
Hi, Hi, I still got problems after I changed my code according to your suggestion. Here is the detail describtion of my code: In registration form, I have a table which contain a field usr_email (tr td width="40%" align="right"Email Addressnbsp; /td td width="60%"input type="text" name="usr_email" size="20"/td /tr) This form takes an action in which I have following lines: dtml-if search_membership pYour email address has been used. /p dtml-else dtml-call personinfo_insert h2Welcome dtml-var name="usr_fname"! You became a new user./h2 /dtml-if Does it work, if you use the dtml-indtml-else/dtml-in construct as follows: dtml-in search_membership size=1 pYour email address has been used. /p dtml-else dtml-call personinfo_insert h2Welcome dtml-var name="usr_fname"! You became a new user./h2 /dtml-in If not, are you sure you inserted usr_email into the "Arguments"-field of your sql-Method? Robert -- Robert Wohlfahrt ([EMAIL PROTECTED]) Tel: 0179 / 2980074 Fax: 0351 / 2880145 ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
RE: [Zope] how to check if the ResultSet is null?
You could always do something like this first: "select Count(usr_email) from info(table name) where usr_email = dtml-sqlvar usr_email type=string" Then check the result will be either 1 or 0. Cheers Peter -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of SaSent: Thursday, 13 July 2000 6:04 AMTo: [EMAIL PROTECTED]Subject: [Zope] how to check if the ResultSet is null? Hi, I stuck on a problem: I am creating a registration form. I need to check if the person info has already in database. I created a Z SQL method which I used "select usr_email from info(table name) where usr_email = dtml-sqlvar usr_email type=string" I want to call this method from my dtml method and see if it returns "null". But I'm not sure how to implement this. In Java, it has ResultSet which I can check if it returns null. I'm not sure how to accomplish this in Zope. I could not find relevant document. If you know this, could you give me a hand? Thanks! Sa
Re: [Zope] how to check if the ResultSet is null?
You could always do something like this first: "select Count(usr_email) from info(table name) where usr_email = dtml-sqlvar usr_email type=string" Then check the result will be either 1 or 0. That's asking for trouble 'cos Zope ain't gonna like an id such as 'Count(usr_email)', it's a great idea though :-) Here's how you might need to rephrase it to make Zope happy: "select Count(usr_email) as usremail from info(table name) where usr_email = dtml-sqlvar usr_email type=string" HTH, Chris ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] how to check if the ResultSet is null?
Hi, Hi, I stuck on a problem: I am creating a registration form. I need to check if the person info has already in database. I created a Z SQL method which I used "select usr_email from info(table name) where usr_email = dtml-sqlvar usr_email type=string" I want to call this method from my dtml method and see if it returns "null". But I'm not sure how to implement this. In Java, it has ResultSet which I can let's say, you called your ZSQL-method "getThisAddress" then you can do something like this: dtml-if getThisAddress You are already in the database /dtml-if Robert -- Robert Wohlfahrt ([EMAIL PROTECTED]) Tel: 0179 / 2980074 Fax: 0351 / 2880145 ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] how to check if the ResultSet is null?
Sa wrote: Hi, I stuck on a problem: I am creating a registration form. I need to check if the person info has already in database. I created a Z SQL method which I used "select usr_email from info(table name) where usr_email = dtml-sqlvar usr_email type=string" I want to call this method from my dtml method and see if it returns "null". But I'm not sure how to implement this. In Java, it has ResultSet which I can check if it returns null. I'm not sure how to accomplish this in Zope. I could not find relevant document. If you know this, could you give me a hand? Thanks! If your ZSQL Method is named MyMethod: dtml-in MyMethod You've got some data dtml-else Nothing returned from the SQL /dtml-in Hope that helps . . . -CJ ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] how to check if the ResultSet is null?
Hi, I still got problems after I changed my code according to your
suggestion. Here is the detail describtion of my code:
In registration form, I have a table which contain a field usr_email
(tr
td width="40%" align="right"Email Addressnbsp; /td
td width="60%"input type="text" name="usr_email" size="20"/td
/tr)
This form takes an action in which I have following lines:
dtml-if search_membership
pYour email address has been used. /p
dtml-else
dtml-call personinfo_insert
h2Welcome dtml-var name="usr_fname"! You became a new user./h2
/dtml-if
where "search_membership" is an ZSQL method (select usr_email
from personinfo
where usr_email = dtml-var name="usr_email") and "personinfo_insert" is
a ZSQL method which insert the data to the table("personinfo")
My idea is first checking if usr_email is in the table, if so, do not
insert, otherwise insert. If I just use dtml-call personinfo_insert,
everything is fine. However, when I added the dtml-if as above, I got
the following error:
Zope has encountered an error while publishing this resource.
Error Type: KeyError
Error Value: usr_email
Could you help me out? Thanks!
Sa
Hi,
Hi, I stuck on a problem: I am creating a registration form. I need
to check if the person info has already in database. I created a Z SQL
method which I used "select usr_email from info(table name) where
usr_email = dtml-sqlvar usr_email type=string" I want to call this
method from my dtml method and see if it returns "null". But I'm not
sure how to implement this. In Java, it has ResultSet which I can
let's say, you called your ZSQL-method "getThisAddress"
then you can do something like this:
dtml-if getThisAddress
You are already in the database
/dtml-if
Robert
--
Robert Wohlfahrt ([EMAIL PROTECTED])
Tel: 0179 / 2980074 Fax: 0351 / 2880145
___
Zope maillist - [EMAIL PROTECTED]
http://lists.zope.org/mailman/listinfo/zope
** No cross posts or HTML encoding! **
(Related lists -
http://lists.zope.org/mailman/listinfo/zope-announce
http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] how to check if the ResultSet is null?
Hi, I stuck on a problem: I am creating a registration form. I need to check if the person info has already in database. I created a Z SQL method which I used select usr_email from info(table name) where usr_email = dtml-sqlvar usr_email type=string I want to call this method from my dtml method and see if it returns null. But I'm not sure how to implement this. In Java, it has ResultSet which I can check if it returns null. I'm not sure how to accomplish this in Zope. I could not find relevant document. If you know this, could you give me a hand? Thanks! Sa
