Sortable behavior not working with ENUM scope

[pimpreneil]

When adding a sortable behavior scopped to a column that has a ENUM type, the rank is wrong on creation (and on all the futher rank manipulations done on the object).

A simple workaround is to override the getScopeValue method in your object class.

In the base class, the method looks like this:

public function getScopeValue($returnNulls = true)
{
    return $this->get{MyEnumColumn}();
}

So you have to override the method to make this method return the actual SQL value corresponding to your enum value like so:

public function getScopeValue($returnNulls = true)
{
    return {MyObject}Peer::get{MyEnumColumn}SqlValue($this->get{MyEnumColumn}());
}

I know that this version of Propel is frozen so I won't make any PR regarding this issue.
I don't know if this issue is fixed in Propel2, but I am still posting this simple trick here, it could help people still using this last stable version of Propel...

[pimpreneil]

FYI, I reproduced the problem on Propel2. I will report it there as well...