Question

我必须进行选择，当用户从中选择选项时，应根据此选择显示数据库中的数据。我不能用提交。只有在选择此选项时才会显示，以显示此选择的数据。我是jQuery的新手，我不能这样做。我的观点是：

<?php

    public function average_price_by_week() {

            $this->db->select(*);
            $this->db->from('items');

            $this->db->where('size', $size); //this $size should be value from select that user has selected

            $query=$this->db->get();
            return $query->result_array();

        }



?>

我的模特是：

Private databaseConnector As DatabaseConnector
    Dim fulltxtSQL As String


    DatabaseConnector = New DatabaseConnector



    Try

        fulltxtSQL = "insert into [user-table] (username, password) VALUES ('" & UserName.Text & "','" & Password.Text & "')"

        DatabaseConnector.RunSqlNonQuery(fulltxtSQL)

        If DatabaseConnector.RunSqlNonQuery(fulltxtSQL) = True Then

            MsgBox("thank you for registering ", vbInformation, Title.Trim)
            Response.Redirect("Default.aspx")

            Exit Sub

        Else
            MsgBox(MsgBox("There has been a error in your registering", vbInformation, Title.Trim))
        End If
    Catch ex As Exception
        MsgBox(ex.Message.Trim, MsgBoxStyle.Information + MsgBoxStyle.OkOnly, Me.Title.Trim)
        Exit Sub
    End Try
End Sub

Answer 1

试试这个，它可能对你有帮助。

我使用过JQuery Ajax。在使用以下代码之前还要包含JQuery library。

$('#myselect').change(function(){
    var size = $('#myselect').val();
    if(size != ''){
        $.ajax({
            type:'post',
            url:"/index.php/average_incomes_by_customer/" + size,
            cache:false,
            success: function(returndata){
                console.log(returndata); //"returndata" is the result got from the DB. Use it where you want.
            }
        });
    }
});

控制器：

public function average_incomes_by_customer($size) { 
    $data['average_price']=$this->receivedOrders_model->average_price_by_week($size);
    $this->load->view('charts', $data); 
}

型号：

public function average_price_by_week($size) {
    $this->db->select(*);
    $this->db->from('items');
    $this->db->where('size', $size); //this $size should be value from select that user has selected           
    $query=$this->db->get();
    return $query->result_array();
}

感谢。

如何根据用户从select中的选择显示数据库中的数据

1 个答案: