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Basic qt with mysql?

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  • D Offline
    D Offline
    doforumda
    wrote on last edited by
    #7

    now it displays this error
    @
    in function int main(int, chat**)
    no match for operator! in !db
    candidates are operator!(bool) <built-in>
    @

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    • ZlatomirZ Offline
      ZlatomirZ Offline
      Zlatomir
      wrote on last edited by
      #8

      You can use "isValid()":http://doc.qt.nokia.com/4.6/qsqldatabase.html#isValid

      https://forum.qt.io/category/41/romanian

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      • D Offline
        D Offline
        doforumda
        wrote on last edited by
        #9

        now it is saying
        @
        QSqlDatabase: QMysql driver is not loaded
        QSqlDatabase: available drivers :QSQLITE QSQLITE2
        @

        i have installed Mysql driver here "Your text to link here...":http://developer.qt.nokia.com/forums/viewthread/1121/P30/

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        • D Offline
          D Offline
          DenisKormalev
          wrote on last edited by
          #10

          It says that something is wrong with your mysql plugin. What do you have in your plugins/sqldrivers folder?

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          • D Offline
            D Offline
            doforumda
            wrote on last edited by
            #11

            i have 10 different folders and four files. files with names are libqsqlmysql.so, qsqldriverbase.pri, readme, sqldriver.pro

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            • D Offline
              D Offline
              doforumda
              wrote on last edited by
              #12

              i also run this code
              @
              #include <QCoreApplication>
              #include <QSqlDatabase>
              #include <QSqlError>
              #include <QStringList>
              #include <QtDebug>

                int main( int argc, char *argv )
                {
                QCoreApplication app( argc, argv );
                qDebug() << QSqlDatabase::drivers();
                }
              

              @

              it displays this
              @
              ("QSQLITE","QSQLITE2")
              @

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              • D Offline
                D Offline
                DenisKormalev
                wrote on last edited by
                #13

                Not folder with plugin sources, but folder with qt plugin binaries. It is folder named plugins/sqldrivers in root of your Qt folder.

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                • D Offline
                  D Offline
                  doforumda
                  wrote on last edited by
                  #14

                  well i checked this in this path home/qtsdk-2010.05/qt/src/plugins/sqldrivers

                  I have two plugins folders. one in home/qtsdk-2010.05/qt/plugins
                  in this plugin folder i have 11 folders with one named sqldrivers. inside this sqldriver folder i have these 3 files "libqsqlite.so, libqsqlite2.so, libqsqlpsql.so"

                  the other is mentioned above which inside src.

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                  • D Offline
                    D Offline
                    DenisKormalev
                    wrote on last edited by
                    #15

                    Put mysql plugin in this folder.

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                    • D Offline
                      D Offline
                      doforumda
                      wrote on last edited by
                      #16

                      from which folder i can get mysql plugin and what is the name of that mysql plugin? you mean this one libqsqlmysql.so which is in src/plugins/sqldrivers/mysql folder?

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                      • D Offline
                        D Offline
                        DenisKormalev
                        wrote on last edited by
                        #17

                        yes

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