Fluid ViewHelper Reference 

toon:encode 

Encodes a value to TOON format.

Arguments:

• value (required, mixed) — Data to encode (array, object, scalar)
• options (optional, string) — Preset: default, compact, readable, tabular; default: default

Returns: TOON string (no child content).

Example:

<toon:encode value="{data}" options="readable" />

toon:decode 

Decodes a TOON string to a PHP array.

Arguments:

• toon (required, string) — TOON-formatted string to decode
• as (optional, string) — Variable name to assign the decoded array to; if set, child content is rendered and the variable is available inside
• lenient (optional, bool) — If true, do not coerce scalar types; default: false

Returns: If as is set, the rendered child content; otherwise JSON-encoded decoded array.

Examples:

<toon:decode toon="{toonString}" />
<toon:decode toon="{toonString}" as="decoded">
    <f:for each="{decoded}" as="item">…</f:for>
</toon:decode>
<toon:decode toon="{toonString}" as="decoded" lenient="true">…</toon:decode>

toon:estimateTokens 

Estimates token count for a TOON string.

Arguments:

• toon (required, string) — TOON string to estimate
• as (optional, string) — Variable name to assign the result (keys: words, chars, tokens_estimate); if set, child content is rendered

Returns: If as is set, the rendered child content; otherwise the string value of tokens_estimate.

Examples:

<toon:estimateTokens toon="{toonString}" />
<toon:estimateTokens toon="{toonString}" as="stats">{stats.tokens_estimate}</toon:estimateTokens>

Namespace registration 

The namespace is registered in ext_localconf.php:

$GLOBALS['TYPO3_CONF_VARS']['SYS']['fluid']['namespaces']['toon'] = ['RRP\T3Toon\ViewHelpers'];

In Fluid, use xmlns:toon="http://typo3.org/ns/RRP/T3Toon/ViewHelpers" or the short name toon if your TYPO3 version resolves it.