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< li class = "active" > < a href = "./" > Data Bags< / a >
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< h4 > This Page< / h4 >
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< li > < a href = "#creating-bags" > Creating Bags< / a > < / li >
< li > < a href = "#nested-access" > Nested Access< / a > < / li >
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< h1 > Data Bags< / h1 >
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< p > The < a href = "../../api/databags/" class = "ref" > Data Bags< / a > are a quick way to store structured
information that templates can access. It's just a convenient way to access
data from INI or JSON files. This is useful for instance to build a navigation
menu or similar things.< / p >
< h2 id = "creating-bags" > Creating Bags< / h2 > < p > To create a data bag just place a < code > .ini< / code > or < code > .json< / code > file in the < code > databags/< / code >
folder. The files there are accessible by their name sans the file extension.
All ordering in the source files is retained. So for instance this could
be the < code > main-nav.ini< / code > data file for a basic navigation:< / p >
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< div class = "highlight" > < pre > < span > < / span > < span class = "na" > /downloads< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "s" > Download< / span > < span class = "w" > < / span >
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< span class = "na" > /docs< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "s" > Documentation< / span > < span class = "w" > < / span >
< span class = "na" > /blog< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "s" > Blog< / span > < span class = "w" > < / span >
< / pre > < / div >
< p > And the template could access it like this:< / p >
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< div class = "highlight" > < pre > < span > < / span > < span class = "p" > < < / span > < span class = "nt" > ul< / span > < span class = "na" > class< / span > < span class = "o" > =< / span > < span class = "s" > " nav" < / span > < span class = "p" > > < / span >
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< span class = "cp" > {%< / span > < span class = "k" > for< / span > < span class = "nv" > path< / span > < span class = "o" > ,< / span > < span class = "nv" > label< / span > < span class = "k" > in< / span > < span class = "nv" > bag< / span > < span class = "o" > (< / span > < span class = "s1" > ' main-nav' < / span > < span class = "o" > )< / span > < span class = "nv" > .items< / span > < span class = "o" > ()< / span > < span class = "cp" > %}< / span >
< span class = "p" > < < / span > < span class = "nt" > li< / span > < span class = "cp" > {%< / span > < span class = "k" > if< / span > < span class = "nv" > this.is_child_of< / span > < span class = "o" > (< / span > < span class = "nv" > path< / span > < span class = "o" > )< / span > < span class = "cp" > %}< / span > < span class = "na" > class< / span > < span class = "o" > =< / span > < span class = "s" > " active" < / span > < span class = "cp" > {%< / span > < span class = "k" > endif< / span >
< span class = "cp" > %}< / span > < span class = "p" > > < < / span > < span class = "nt" > a< / span > < span class = "na" > href< / span > < span class = "o" > =< / span > < span class = "s" > " < / span > < span class = "cp" > {{< / span > < span class = "nv" > path< / span > < span class = "o" > |< / span > < span class = "nf" > url< / span > < span class = "cp" > }}< / span > < span class = "s" > " < / span > < span class = "p" > > < / span > < span class = "cp" > {{< / span > < span class = "nv" > label< / span > < span class = "cp" > }}< / span > < span class = "p" > < /< / span > < span class = "nt" > a< / span > < span class = "p" > > < / span >
< span class = "p" > < /< / span > < span class = "nt" > li< / span > < span class = "p" > > < / span >
< span class = "cp" > {%< / span > < span class = "k" > endfor< / span > < span class = "cp" > %}< / span >
< span class = "p" > < /< / span > < span class = "nt" > ul< / span > < span class = "p" > > < / span >
< / pre > < / div >
< h2 id = "nested-access" > Nested Access< / h2 > < p > Data bags can be structured in more complex ways. For INI files sections
can be used, for JSON files entire object trees can be stored. The
< a href = "../../api/templates/globals/bag/" class = "ref" > bag< / a > function can thus accept
arbitrary dotted path (or multiple args to < code > bag< / code > ) to navigate to specific items
within the bag. For instance you could use this to look up values that might
change depending on the alternative of a page for instance.< / p >
< p > In this case the system is used to translate buttons. Take < code > buttons.ini< / code >
as an example:< / p >
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< div class = "highlight" > < pre > < span > < / span > < span class = "k" > [en]< / span > < span class = "w" > < / span >
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< span class = "na" > download< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "s" > Download< / span > < span class = "w" > < / span >
< span class = "k" > [de]< / span > < span class = "w" > < / span >
< span class = "na" > download< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "s" > Herunterladen< / span > < span class = "w" > < / span >
< span class = "k" > [ru]< / span > < span class = "w" > < / span >
< span class = "na" > download< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "s" > Скачать< / span > < span class = "w" > < / span >
< / pre > < / div >
< p > And in a template it could be used like this:< / p >
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< div class = "highlight" > < pre > < span > < / span > < span class = "p" > < < / span > < span class = "nt" > h2< / span > < span class = "p" > > < / span > < span class = "cp" > {{< / span > < span class = "nv" > bag< / span > < span class = "o" > (< / span > < span class = "s1" > ' buttons' < / span > < span class = "o" > ,< / span > < span class = "nv" > this.alt< / span > < span class = "o" > ,< / span > < span class = "s1" > ' download' < / span > < span class = "o" > )< / span > < span class = "cp" > }}< / span > < span class = "p" > < /< / span > < span class = "nt" > h2< / span > < span class = "p" > > < / span >
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