Re: varchars as foreign keys in Cake leads to conversion to Int Error - using MS SQL

When a field is a foreign key on one table, there's an implication that it is a primary key on another table.  And it is generally accepted convention that primary keys are ints, except when they aren't! [http://book.cakephp.org/1.3/view/1016/Using-UUIDs-as-Primary-Keys]

Since a UUID is not an int, you might think that CakePHP would need to handle non-ints as foreign keys.  However, a key is only recognised as a UUID when it is defined as CHAR(36) or BINARY(36).

You may have found a bug.  Then next bit to work out is what SQL is generated that is causing the error, and then where in the MS SQL driver that is getting generated.  It also might help if you mention what version of CakePHP you are using.

Regards

Reuben Helms

On Thursday, 15 November 2012 08:03:41 UTC+10, Tomas wrote:

Hi!!

I work ussualy with mysql and I work in cake long time, but now with MS SQL, I get strange error on very simple thing - view, index, edit methods within SCAFFOLD mode.

Error: SQLSTATE[22018]: [Microsoft][SQL Server Native Client 11.0][SQL Server]Conversion failed when converting the varchar value 'G12345' to data type int.

There is a table called 'item', which has a field GLID - vachar(20). Simple field, not even primary key. the only thing is that it is in relation with other table 'material' with same properties. E.g. 'item' hasMany 'material' AND 'material' belongsTo 'item'.

Can I link varchars as foreign keys in cake?? Because if I edit the field values and I remove letter 'G' ... 'G12345' >> '12345' then it works ok!! why cake converts something to int??

Any idea?

Thank you

Tomas

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