On 16 August 2011 09:49, merbivore <[email protected]> wrote:
> Hi Everyone,
>
>   I am trying to solve this problem, but couldn't able to get the
> solution. I hope i will get some help here.
>
> I am using these three find methods to get different types of
> devices.  I dont have any relationships between any models.
>
>
>  windows_devices = BaseManagedEntity.find(:all,
>  :select => "b.BaseManagedEntityInternalId, c.NetworkName,
> c.IPAddress, s.HealthState, s.LastModified",
>  :joins =>  "as b INNER JOIN mt_computer as c ON
> c.basemanagedentityid = b.basemanagedentityid
>        INNER JOIN state as s ON b.basemanagedentityid =
> s.basemanagedentityid",
>  :conditions => "IsManaged = 1 and s.LastModified = (select
> MAX(LastModified) from state where basemanagedentityid =
> s.basemanagedentityid)",
>  :order => "s.LastModified DESC",
>  :group => "b.BaseManagedEntityInternalId, s.HealthState,
> s.LastModified, c.NetworkName, c.IPAddress" )
>
>  unix_devices = BaseManagedEntity.find(:all,
>  :select => "b.BaseManagedEntityInternalId,
> c.NetworkName_360E5A02_BC9E_0000_2614_1972E304088A,
> c.IPAddress_360E5A02_BC9E_0000_2614_1972E304088A, s.HealthState,
> s.LastModified",
>  :joins =>  "as b INNER JOIN MTV_Computer_0 as c ON
> c.basemanagedentityid = b.basemanagedentityid
>        INNER JOIN state as s ON b.basemanagedentityid =
> s.basemanagedentityid",
>  :conditions => "IsManaged = 1 and s.LastModified = (select
> MAX(LastModified) from state where basemanagedentityid =
> s.basemanagedentityid)",
>  :order => "s.LastModified DESC",
>  :group => "b.BaseManagedEntityInternalId, s.HealthState,
> s.LastModified, c.NetworkName_360E5A02_BC9E_0000_2614_1972E304088A,
> c.IPAddress_360E5A02_BC9E_0000_2614_1972E304088A" )
>
>  network_devices = BaseManagedEntity.find(:all,
>  :select => "b.BaseManagedEntityInternalId,
> c.Name_65AC01F1_F20E_CE0D_42CA_B24D1DE49E5F,
> c.IPAddress_65AC01F1_F20E_CE0D_42CA_B24D1DE49E5F, s.HealthState,
> s.LastModified",
>  :joins =>  "as b INNER JOIN mt_networkdevice as c ON
> c.basemanagedentityid = b.basemanagedentityid
>        INNER JOIN state as s ON b.basemanagedentityid =
> s.basemanagedentityid",
>  :conditions => "IsManaged = 1 and s.LastModified = (select
> MAX(LastModified) from state where basemanagedentityid =
> s.basemanagedentityid)",
>  :order => "s.LastModified DESC",
>  :group => "b.BaseManagedEntityInternalId, s.HealthState,
> s.LastModified, c.Name_65AC01F1_F20E_CE0D_42CA_B24D1DE49E5F,
> c.IPAddress_65AC01F1_F20E_CE0D_42CA_B24D1DE49E5F" )
>
> After finding these am concatenating all these three like this
>
>   devices = windows_devices.concat(unix_devices)
>   @devices = devices.concat(network_devices)
>
>
> I need to loop @devices in the view and i need to display the IP
> Address for the all the devices.
>
> When i do <%= device.IPAddress %> am getting error because the other
> device uses the attribute
> IPAddress_65AC01F1_F20E_CE0D_42CA_B24D1DE49E5F .
>
> I was struck with this issue. Please help me in this issue asap.

Catch the error and take appropriate action?  Even better sort out the
database design.

Colin

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