[tryton-dev] trytond: Allow to use child_of on M2O dotted search

[Code Review - New issues: nicoe]

trytond: Allow to use child_of on M2O dotted search

I don't know how we should handle the case of a child_of on a Reference field Is it [('reference', 'child_of', value, 'target', 'parent')] or [('reference', 'child_of', value, 'parent', 'target')]

URL: http://codereview.tryton.org/953002/