How do I retrieve the layout field from the parent page?

Question

I want to know what the layout of the parent page is in my fluid template.

So in the template I've added:

<f:cObject typoscriptObjectPath="lib.parentLayout" data="{uid: {data.pid}}" />

But I am not sure what to do in typoscript:

lib.parentLayout = CONTENT
lib.parentLayout {
    table = pages
    select {
        uid.data = field:uid
        fieldName = layout
    }
}

Answer 1

There are different options to get that information.

You could for example add the field layout to the so called rootline fields https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Configuration/Typo3ConfVars/FE.html#globals-typo3-conf-vars-fe-addrootlinefields and make use of the level functionality of getText:

lib.parentLayout  = TEXT
lib.parentLayout  {
  data = levelfield:-2, layout
}

or you could use the PID (aka parent parent ID) to get the parent page with CONTENT:

lib.parentLayout = CONTENT
lib.parentLayout {
  table = pages
  select {
    uidInList.field = pid
    pidInList = 0
    selectFields = layout
  }
  renderObj = TEXT
  renderObj.field = layout
}

or with RECORDS:

lib.parentLayout = RECORDS
lib.parentLayout {
  tables = pages
  source.field = pid
  conf.pages = TEXT
  conf.pages {
    field = layout
  }
}

and of course you can go for setting UID with PID in the Fluid template, but IMHO this is misleading.