Option 2 does not look normalized to me as data1, data2, data3 should be in
an associated table Process hasMany Data <-> Data belongsTo Process.
When editing you echo each records id and therefore the save call will
update the correct record.
echo $this->Form->input("Process.0.id");
echo $this->Form->input("Process.0.process_name");
echo $this->Form->input("Process.0.cost_type");
You specify an order attribute when fetching the data to be displayed in
the edit form and it is this that determines the order the records are
displayed in.
HTH, Paul.
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