Windshaft-cartodb/docs/MapConfig-NamedMaps-extension.md

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# STATUS: DRAFT
# 1. Purpose
This specification describes an extension for
[MapConfig 1.3.0](https://github.com/CartoDB/Windshaft/blob/master/doc/MapConfig-1.3.0.md) version.
# 2. Changes over specification
This extension introduces a new layer type so it's possible to use a named map by its name as a layer.
## 2.1 Named layers definition
```javascript
{
// REQUIRED
// string, `named` is the only supported value
type: "named",
// REQUIRED
// object, set `named` map layers configuration
options: {
// REQUIRED
// string, the name for the named map to use
name: "world_borders",
// OPTIONAL
// object, the replacement values for the named map's template placeholders
// See https://github.com/CartoDB/Windshaft-cartodb/blob/master/docs/Map-API.md#instantiate-1 for more details
config: {
"color": "#000"
},
// OPTIONAL
// string array, the authorized tokens in case the named map has auth method set to `token`
// See https://github.com/CartoDB/Windshaft-cartodb/blob/master/docs/Map-API.md#named-maps-1 for more details
auth_tokens: [
"token1",
"token2"
]
}
}
```
## 2.2 Limitations
A `named` map will not allow to have `named` type layers inside their templates layergroup's layers definition.
# History
## 1.0.0
- Initial version