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morphman Nybegynder

18. april 2007 - 22:16 Der er 16 kommentarer og
2 løsninger

Dynamic Search

Hey there lads, I really hope that ye guys will be able to help as I am findin' meself in quite a pickle. The thing is I am creating a really simple school database which consists of tabels such as teacher, student, room and class.

I've been workin' on it for a while and I've gotten must of the functions to work in the backend.

http://mi2oon.monline.dk/3sem/cms/Copy%20of%20search.php

The thing is it sort of looked a little complicated and needed to be expaned. So, I ended up with something that looks like this.

http://mi2oon.monline.dk/3sem/cms/search.php

Pretty simple and neat lookin, huh? Well, at least I think so. I've been woking of the php side of this one so that I actually can check which seach is being made.. and after a little time I came up with this.. and going through all the possible combinations this seems to work well.

However, here is how the php code looks like.

if(isset($_REQUEST['q']) && isset($_REQUEST['class']) && (isset($_REQUEST['student']) || isset($_REQUEST['teacher'])))
{

$name = $_REQUEST['q'];
$student = $_REQUEST['student'];
$teacher = $_REQUEST['teacher'];
$class = $_REQUEST['class'];

$sql_query = "SLECET";

if((strlen($name)>0 || strlen($class)>0)){
if(strlen($name)>0){
echo "Name is set ";
}
if(strlen($class)>0){
echo "Class is set ";
}
if(isset($teacher) && isset($student))
echo "Teacher and Student is set ";
else if(isset($teacher))
echo "Teacher is set ";
else
echo "Student is set ";
}
else{
echo "ERROR: need more input!";
}
}
else {
echo "ERROR: nothing is set!";
}

So, me question is can I make it so that I can create dynamic sql queries meaning queries according to what actually is being set.
I can provide the list of these different queries if what will help.

Well, as I said I really hope that someone will be able to help me with this as I've been stuck of this for a while. Nevertheless, thank ye so much and I am sorry for not writin' danish.. it's just because I am not very good with it. Though I can explain' a little bit if wanted.

thanks and cheers :)

Synes godt om

dandyman Nybegynder

19. april 2007 - 07:35 #1

$sql_query = "SLECET";
should be
$sql_query = "SELECT";

Synes godt om

jakobdo Ekspert

19. april 2007 - 07:56 #2

Could you show the structure of your tables?

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morphman Nybegynder

19. april 2007 - 08:56 #3

dandyman: ahh, it seems like I made a little typo.. thanks for pointin' it out lad ;)

jakobdo: Well, yeah, sure I can.. do ye need the diagram or I can give ye the sql dump? What do ye prefer?

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jakobdo Ekspert

19. april 2007 - 09:18 #4

Just the table-structur, like:

Table_name: student
name - varchar(50)
mail - varchar(255)
etc...

Synes godt om

morphman Nybegynder

19. april 2007 - 11:59 #5

Sure mate here it is :)

CREATE TABLE `class` (
`classid` int(10) unsigned NOT NULL auto_increment,
`roomid` int(2) NOT NULL default '0',
`name` varchar(10) NOT NULL default '',
`line` enum('UK','DK') NOT NULL default 'UK',
`start_year` date NOT NULL default '0000-00-00',
PRIMARY KEY (`classid`),
UNIQUE KEY `name` (`name`)
) TYPE=MyISAM;
CREATE TABLE `postal_code` (
`postal_code` int(4) unsigned NOT NULL default '0',
`district` varchar(30) NOT NULL default '',
PRIMARY KEY (`postal_code`),
UNIQUE KEY `district` (`district`)
) TYPE=MyISAM;
CREATE TABLE `room` (
`roomid` int(2) unsigned NOT NULL auto_increment,
`name` varchar(20) NOT NULL default '',
`area` varchar(20) NOT NULL default '',
PRIMARY KEY (`roomid`),
UNIQUE KEY `name` (`name`)
) TYPE=MyISAM;
CREATE TABLE `student` (
`studentid` int(10) unsigned NOT NULL auto_increment,
`classid` int(10) NOT NULL default '0',
`cpr` int(10) unsigned NOT NULL default '0',
`name` varchar(255) NOT NULL default '',
`address` varchar(255) NOT NULL default '',
`postal_code` int(4) unsigned NOT NULL default '0',
`phone` int(15) unsigned NOT NULL default '0',
`email` varchar(255) NOT NULL default '',
PRIMARY KEY (`studentid`),
UNIQUE KEY `cpr` (`cpr`,`email`)
) TYPE=MyISAM;
CREATE TABLE `teacher` (
`teacherid` int(10) unsigned NOT NULL auto_increment,
`classid` int(10) NOT NULL default '0',
`cpr` int(10) unsigned NOT NULL default '0',
`name` varchar(255) NOT NULL default '',
`address` varchar(35) NOT NULL default '',
`postal_code` int(4) unsigned NOT NULL default '0',
`phone` int(15) unsigned NOT NULL default '0',
`email` varchar(255) NOT NULL default '',
`subject` enum('int','vis','org','com') NOT NULL default 'int',
PRIMARY KEY (`teacherid`),
UNIQUE KEY `cpr` (`cpr`,`email`)
) TYPE=MyISAM;

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jakobdo Ekspert

19. april 2007 - 12:43 #6

How should the result look like?
If I make a search on NAME and CLASS and check STUDENT, what should i see?
If I make a search on NAME and CLASS and check TEACHER, what should i see?
If I make a search on NAME and CLASS and check STUDENT and TEACHER, what should i see?

Synes godt om

morphman Nybegynder

19. april 2007 - 15:27 #7

Here are all the combinations that I can think of. I am glad that ye are looking into it. thank ye so much mate :)

NAME and CLASS and check STUDENT?
-----------------------------------------------
Find student with that name in that class and
show name address postal_code district phone email
and class.

NAME and CLASS and check TEACHER?
-----------------------------------------------
Find a teacher with that name in that class and
show name address postal_code district phone email
and class.

NAME and CLASS and check STUDENT and TEACHER?
-----------------------------------------------
Find students and teachers with that name in that
class and show name address postal_code district
phone email and class.

NAME and and check STUDENT?
-----------------------------------------------
Find all the students that match that name
show name address postal_code district phone email
and class.

NAME and and check teacher?
-----------------------------------------------
Find all the teachers that match that name
show name address postal_code district phone email
and class.

NAME and check STUDENT and TEACHER?
-----------------------------------------------
Find all the teachers and students that match that name
show name address postal_code district phone email
and class.

CLASS and nothing checked?
-----------------------------------------------
Find the class and show the name, line start_year
and room name

CLASS and check STUDENT?
-----------------------------------------------
Find all the students from that class and show
name address postal_code district phone email
and class.

CLASS and check TEACHER?
-----------------------------------------------
Find all the teachers from that class and show
name address postal_code district phone email
and class.

CLASS and check STUDENT and TEACHER?
-----------------------------------------------
Find all the students and students from that class
and show name address postal_code district phone email
and class.

Synes godt om

morphman Nybegynder

19. april 2007 - 15:35 #8

Well, for me it is like a jungle. I hope that ye can help me lad.
One more thing.. if "CLASS and nothing checked?" is going to cause
some problems.. then just take it out of the equation. ;)

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jakobdo Ekspert

19. april 2007 - 20:35 #9

How do you connect the tables?

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morphman Nybegynder

19. april 2007 - 21:37 #10

Something like this?

http://mi2oon.monline.dk/3sem/cms/datamodel.html

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morphman Nybegynder

19. april 2007 - 21:39 #11

I think is is the old diagram, so a few things have changed.

Students don't have a line but instead got an email
Teachers got a classID so that they can be connected
Class has a name and a line

thanks lad ;)

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jakobdo Ekspert

19. april 2007 - 21:43 #12

How is a teacher connected to the class?
Could there be a classid on the teacher table?

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morphman Nybegynder

19. april 2007 - 21:52 #13

Yes, the diagram only shows the first shot at it. I later found out that I needed to connect teacher to the class.. so yes I added the classID as ye can see in the SQL table structure above. :)

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jakobdo Ekspert

20. april 2007 - 18:32 #14

Just to be sure, you have this line of code:

if(isset($_REQUEST['q']) && isset($_REQUEST['class']) && (isset($_REQUEST['student']) || isset($_REQUEST['teacher'])))

With this code, we have 3 results.
q + class + student
q + class + teacher
q + class + student + teacher

That should be easy to create.

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morphman Nybegynder

04. maj 2007 - 11:02 #15

Well, sorry for the delayed reply. However, I didn't have any internet for a while. Neverhtheless, I got it fixed it's all working now.. thanks for ye help and most of all ye time.. take care till the next time ;)

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morphman Nybegynder

04. maj 2007 - 11:03 #16

ps; if ye want some points, just put down an answer.. cheers ;)

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jakobdo Ekspert

04. maj 2007 - 18:42 #17

Here you got your answer! :o)

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jakobdo Ekspert

20. maj 2007 - 16:55 #18

Thanks mate.

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