MySQL Saving what am i doing wrong

ID:1127548
 
Jan 16 2013, 11:29 pm
(See the best response by Pirion.)
Code:
client

    proc
        Save(mob/M)
            for(var/V=1 to M.vars.len)
            {
                if(ignored_vars.Find(M.vars[V]))
                {
                    continue
                }
                else
                {
                    Query("UPDATE `[sql_table]` SET [V]='[M.vars[V]]' WHERE name='[M.name]';")
                }
            }
            mb_msgout("Character saved.", M)


Problem description:

>.> what am i doing wrong.. inserting the variables works fine but not updating?

im using this library
http://www.byond.com/developer/DivineTraveller/ MySQLmobsaving
Jan 17 2013, 9:50 am
Maybe you can show us your insert code, and we can look at what you are doing differently?
Jan 17 2013, 10:05 am
Best response
Looking at forum post:
http://www.byond.com/forum/?post=1127261

It looks as though you have named fields, yet for(var/V=1 to M.vars.len) is looking though 1 2 3 4 5 (etc), and saving them as indexes.

I would assume you need to do for(var/x in M.vars) and M.vars[x] to get the name/value pair.

Try outputting your SQL statement to confirm this, and if so - fix.

Edit: You can also greatly reduce the SQL queries you run by combining them:

var/combineStatements = "";
var/loop = 0
for(var/V in M.vars)
{
    if(!ignored_vars.Find(M.vars[V]))
    {
        if(loop>0)
        {
            combineStatements += ",";
            loop++;
        }
        combineStatements += "[V]='[M.vars[V]]'";
    }
}
var/query = "UPDATE `[sql_table]` SET [combineStatements] WHERE name='[M.name]';"
Jan 17 2013, 12:04 pm
It is now saving but for some reason it is leaving out some variables that were not added to the ignore list.. i don't know why.

    SaveCharacter(mob/M)
        var/combineStatements = "";
        var/loop = 0
        var/X = 1
        for(var/V in M.vars)
        {
            if(isclient(M.vars[M.vars[X]]) || ignored_vars.Find(M.vars[X])) continue
            if(loop>0)
            {
                combineStatements += ", ";
            }
            combineStatements += "[V]='[M.vars[V]]'";
            loop++;
            X++;
        }
        var/query = "UPDATE `[sql_table]` SET [combineStatements] WHERE name='[M.name]';"
        world.log << query
        return query


Jan 17 2013, 2:06 pm
Never mind i got it all resolved thanks for the guidance.