View source for Template:Ambox/category

{{#if:{{{cat|}}}
 |{{#if:{{{date|}}}
  |[[Category:{{{cat}}} {{{preposition|from}}} {{{date}}}]]{{#ifexist:Category:{{{cat}}} {{{preposition|from}}} {{{date}}}|
   |[[Category:Articles with invalid date parameter in template]]
  }}
  |[[Category:{{{cat}}}]]
 }}
}}{{#if:{{{all|}}}
 |[[Category:{{{all}}}]]
}}{{#if:{{{cat2|}}}
 |{{#if:{{{date|}}}
  |[[Category:{{{cat2}}} {{{preposition|from}}} {{{date}}}]]{{#ifexist:Category:{{{cat2}}} {{{preposition|from}}} {{{date}}}|
   |[[Category:Articles with invalid date parameter in template]]
  }}
  |[[Category:{{{cat2}}}]]
 }}
}}{{#if:{{{all2|}}}
 |[[Category:{{{all2}}}]]
}}{{#if:{{{cat3|}}}
 |{{#if:{{{date|}}}
  |[[Category:{{{cat3}}} {{{preposition|from}}} {{{date}}}]]{{#ifexist:Category:{{{cat3}}} {{{preposition|from}}} {{{date}}}|
   |[[Category:Articles with invalid date parameter in template]]
  }}
  |[[Category:{{{cat3}}}]]
 }}
}}{{#if:{{{all3|}}}
 |[[Category:{{{all3}}}]]
}}
<noinclude>[[Category:Formatting and function templates]]</noinclude>