How to create column model with nested keys/Ids

[nglasantha]

Hi,
my objects (rows) array as below.
[ {
row1: {
data1: {
k1: v1
},
data2: {
k1: v1
}
},
row2: {
data1: {
k1: v1
},
data2: {
k1: v1
}
}
}]

I tried to use key 'data1.k1' like this but did not work, I am suing template option with angular interpolation. but sorting and searching does not work with this.
{
id: 'k1',
key: 'data1.k1',
label: 'Label',
sort: 'string',
filter: 'like',
template: '{{row.data1.k1}}'
}