def render_template_partitions(self):
        """
        Supplies a more detailed view of the Partitions for this
        template.  It's built to mimic the partitions that are stored in the
        ar_add form state variable, so that when a partition is chosen, there
        is no further translation necessary.

        It combines the Analyses and Partitions AT schema field values.

        For some fields (separate, minvol) there is no information, when partitions
        are specified in the AR Template.

        :return a list of dictionaries like this:

            container
                     []
            container_titles
                     []
            preservation
                     []
            preservation_titles
                     []
            separate
                     false
            minvol
                     "0.0000 m3 "
            services
                     ["2fdc040e05bb42ca8b52e41761fdb795", 6 more...]
            service_titles
                     ["Copper", "Iron", "Magnesium", 4 more...]

        """
        Analyses = self.context.Schema()['Analyses'].get(self.context)
        Parts = self.context.Schema()['Partitions'].get(self.context)
        if not Parts:
            # default value copied in from content/artemplate.py
            Parts = [{'part_id': 'part-1',
                      'Container': '',
                      'Preservation': '',
                      'container_uid': '',
                      'preservation_uid': ''}]
        parts = []
        not_found = set()
        for Part in Parts:
            part = {
                'part_id': Part.get("part_id", "part-1"),
                'container_titles': Part.get("Container", ""),
                'container': Part.get("container_uid", ""),
                'preservation_titles': Part.get("Preservation", ""),
                'preservation': Part.get("preservation_uid", ""),
                'services': [],
                'service_titles': [],
            }
            for analysis in Analyses:
                uid = analysis['service_uid']
                partiton = analysis['partition']
                if partiton == part['part_id']:
                    part['services'].append(uid)
                    part['service_titles'].append(uid)
                    not_found.discard(analysis['service_uid'])
                else:
                    if uid in part['services']:
                        part['services'].remove(uid)
                    if uid in part['service_titles']:
                        part['service_titles'].remove(uid)
                    not_found.add(analysis['service_uid'])

            parts.append(part)

        # all others go into the first part.  Mostly this will be due to
        # partition info not being defined?
        for uid in not_found:
            if uid not in part['services']:
                parts[0]['services'].append(uid)
            if uid not in part['service_titles']:
               parts[0]['service_titles'].append(uid)

        return parts
Supplies a more detailed view of the Partitions for this
        template.  It's built to mimic the partitions that are stored in the
        ar_add form state variable, so that when a partition is chosen, there
        is no further translation necessary.

        It combines the Analyses and Partitions AT schema field values.

        For some fields (separate, minvol) there is no information, when partitions
        are specified in the AR Template.

        :return a list of dictionaries like this:

            container
                     []
            container_titles
                     []
            preservation
                     []
            preservation_titles
                     []
            separate
                     false
            minvol
                     "0.0000 m3 "
            services
                     ["2fdc040e05bb42ca8b52e41761fdb795", 6 more...]
            service_titles
                     ["Copper", "Iron", "Magnesium", 4 more...]