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TypoScript: override COA if empty – SEO

I have 2 COAs: lib.productContent and lib.categoryContent which contain data from a user function.
I also have a third COA – lib.seoColumns – which should contain by default the product COA. If the product COA is empty, it should be overridden by the category COA, but I don’t know how to actually check if the product COA is empty:

########## PRODUCT CONTENT ##########
lib.productContent = COA
lib.productContent {
    10 = USER
    10 {
        userFunc = VendorProviderUserFuncPage->getPageContentByAlias
        alias = TEXT
        alias.data = GP:product
        aliasField.cObject = TEXT
        aliasField.cObject.value = product_alias
    }
}

########## CATEGORY CONTENT ##########
lib.categoryContent = COA
lib.categoryContent {
    10 = USER
    10 {
        userFunc = VendorProviderUserFuncPage->getPageContentByAlias
        alias = TEXT
        alias.data = GP:category
        aliasField.cObject = TEXT
        aliasField.cObject.value = category_alias
    }
}

########## SEO COLUMNS ##########
lib.seoColumns = COA
lib.seoColumns {
    10 < lib.productContent
    10.stdWrap.override.cObject < lib.categoryContent

    # 10.stdWrap.override.if    <-- IF WHAT ?

    wrap = <seoColumns><![CDATA[|]]></seoColumns>
}
Tags:

2

Answers


  1. 0

    Just do it the other way around, since override only will do the actual override, when there is at least something in the overriding object.

    https://docs.typo3.org/typo3cms/TyposcriptReference/Functions/Stdwrap/Index.html#override

    ########## SEO COLUMNS ##########
lib.seoColumns = COA
lib.seoColumns {
  10 < lib.categoryContent
  10.stdWrap.override.cObject < lib.productContent
  wrap = <seoColumns><![CDATA[|]]></seoColumns>
}

    no if necessary.

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  2. 0

    Easiest way would be to use the stdWrap .ifEmpty function
    https://docs.typo3.org/typo3cms/TyposcriptReference/Functions/Stdwrap/Index.html#ifempty

    lib.seoColumns = COA
lib.seoColumns {
   10. < lib.productContent
   10.stdWrap.ifEmpty.cObject < lib.categoryContent
   wrap = <seoColumns><![CDATA[|]]></seoColumns>
}

    as ifEmpty is of type string/stdWrap it supports stdWrap Attributes and we can use .cObject to load another Content Object. like the COA for the second case.

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