Sort of OT: mysql and select from two tables...?

Bob Sneidar bobs at twft.com
Wed Mar 16 19:36:52 EDT 2011


session_register is not a mySQL function, it is php. It is also deprecated, so it may or may not work depending on the version of php being used. 

I thought you were trying to get Livecode to tell you who the current logged in user was? current_user() or just user() works for me. 

Bob

on mouseUp pMouseBtnNo
    put "select current_user()" into theSQL
    put dbconn_get("connection id", "priconn", "primary") into thePriID -- sqlYoga function
    
    try
        put revDataFromQuery(comma, return, thePriID, theSQL) into theSQLData -- RevDB function
    catch theError
        answer theError
        exit to top
    end try
    
    put theSQLData
end mouseUp

This returns my on-rev user login at the ip I am connecting from as in mydatabase_mylogin at 69.227.63.5 (I made that up). Wouldn't that do it for you? Or are you using some kind of internal authentication and you are trying to get what the user typed into a form?


Bob


On Mar 16, 2011, at 4:10 PM, John Patten wrote:

> Hi Bob...
> 
> session_user() appears to give me something other than the current logged in user. It returns:   myaccount_nameofdatabase
> 
> This is what I did to test it out:
> 
> $result = mysql_query( "SELECT session_user() FROM teacher_user" )
> or die("SELECT Error: ".mysql_error());
> 
> $num_rows = mysql_num_rows($result);
> 
> print "There are $num_rows records.<P>";
> 
> print "<table width=600 border=1>\n";
> while ($get_info = mysql_fetch_row($result)){
> print "<tr>\n";
> foreach ($get_info as $field)
> print "\t<td>$field</td>\n";
> print "</tr>\n";
> }
> print "</table>\n";
> 
> 
> I think even if I could return just the current user's profile (fields in their record) using the session_register command in mySQL I'd be making progress :-)
> 
> Any other ideas?
> 
> Thank you!
> 
> John Patten
> SUSD
> 
> On Mar 16, 2011, at 1:24 PM, Bob Sneidar wrote:
> 
>> You can use "SELECT session_user()" to get the currently logged in user. It's a synonym for "USER()". That help?
>> 
>> Bob
>> 
>> 
>> On Mar 16, 2011, at 12:15 PM, John Patten wrote:
>> 
>>> Hi All...
>>> 
>>> Thanks for the previous help on the on-rev php/mysql question. I have a question about the mysql select command, session_register, and selecting from two tables.
>>> 
>>> I have one database with two tables. The tables are teacher_user and student_user.
>>> 
>>> Each table has a unique teacher-id stored in a fields. So students with the teacher_id value of 0001 stored in their student_user record all belong to the same teacher.
>>> 
>>> 
>>> Teacher_table        Student_table
>>> 
>>> id - 0001                     teacher_id = 0001
>>> first                               first
>>> last                               last
>>> title                               grade
>>> 
>>> 
>>> I also have the teacher login with their username and password comparing what is stored in their db record for username and password. If they match, then their username and password is then session_register("username"); & session_register("password");  .
>>> 
>>> What i would like to be able to do is query the database and return a list of students to the individual teacher based on some unique information about the teacher's record, say their username.
>>> 
>>> is there some way I can get at the session_register("username") and use it in my select query?
>>> 
>>> Something like:
>>> 
>>> select "username" from teacher_table and put "id" of table teacher_table into tTeacher_id then
>>> select tTeacher_id from student_table and loop through the student printing each record
>>> 
>>> I suppose if the teacher new their id value I could just have them type that into a form and do a simple query the student_table and teacher_id field by that id value. But I was trying to make it a little more automatic and did not want teachers trying to guess other teachers' ids.
>>> 
>>> Thanks in advance!
>>> 
>>> John Patten
>>> SUSD
>>> 
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>> 
>> 
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