loop over 2-dimensional array of mounts?

[strowi]

Hi,

i am trying to mount a series of configmaps without writing every single mount, but somehow i am getting extra dashes which break the yaml-structure.
The Volumes and ConfigMap are created ok, only the
Does anyone know where my errors is/how to fix this?

{
  _config+:: {
    grafana+: {
      dashboards: {
        static: {
          system: {
            'dashboardx.json': (importstr './files/provisioning/dashboards/monitoring/services/dashboards.json'),
          },
          services: {
            'dashboard1.json': (importstr './files/provisioning/dashboards/monitoring/services/dashboard1.json'),
            'dashboard2.json': (importstr './files/provisioning/dashboards/monitoring/services/dashboard2.json'),
...

 local volumeMounts = [
        [
          local dashboardName = 'grafana-dashboards-' + type + '-' + std.strReplace(name, '.json', '');
          containerVolumeMount.new(dashboardName, '/etc/grafana/provisioning/dashboards/' + type + '/' + name)
          + containerVolumeMount.withSubPath(name)
          for name in std.objectFields(instance.dashboards.static[type])
        ]
        for type in std.objectFields(instance.dashboards.static)
      ],
local volumes = [
        local dashboardName = 'grafana-dashboards-services-' + std.strReplace(name, '.json', '');
        volume.withName(dashboardName)
        + volume.mixin.configMap.withName(dashboardName) 
        for name in std.objectFields($.grafana.dashboards_static.services)
        ],
...

      deployment:
        stateful.new(
          containers=[
            ...
            + container.withVolumeMounts(volumeMounts),
            // +container.withCommand(['sh', '-c', 'sleep 30m']),
          ],
        )
        + stateful.spec.template.spec.withVolumesMixin(volumes)

The resulting statefulset-container contains volumemounts with an extra dash per sub-array:

       volumeMounts:
        - - mountPath: /etc/grafana/provisioning/dashboards/system/dashboardx.json
            name: grafana-dashboards-system-dashboardx
            subPath: dashboardx.json
        - - mountPath: /etc/grafana/provisioning/dashboards/services/dashboard1.json
            name: grafana-dashboards-services-dashboard1
            subPath: dashboard1.json
          - mountPath: /etc/grafana/provisioning/dashboards/services/dashboard2.json
            name: grafana-dashboards-services-dashboard2
            subPath: dashboard2.json

regards,
strowi

[strowi]

Ok,after hours of fiddling with this it took me this post + 5min. to find std.flattenArrays() which works:

+ container.withVolumeMounts(std.flattenArrays(volumeMounts)),
...
+ stateful.spec.template.spec.withVolumesMixin(std.flattenArrays(volumes))

But other/better suggestions are welcome;)