Fix WMTSFacade provider (#2167)

Dolite · doublebyte1 · web-flow · commit b8237beecc6e · 2025-12-09T19:35:01.000Z
* Fix WMTSFacade provider

'style' query parameter is mandatory according to WMTS 1.0.0 standard. For
backwards compatibility, empty string remains as default value.

* Update wmts_style description for clarity

Clarified wmts_style description in ogcapi-tiles.rst.

---------

Co-authored-by: Jo &lt;doublebyte@hushmail.com&gt;
diff --git a/docs/source/publishing/ogcapi-tiles.rst b/docs/source/publishing/ogcapi-tiles.rst
@@ -196,6 +196,7 @@ This code block shows how to configure pygeoapi to read map tiles from a WMTS.
          options:
              wmts_layer: camb:hex350_grid_mental_1920 # the layer name of the wmts
              wmts_tile_matrix_set: WebMercatorQuad  # the name of the tile matrix set of the wmts.
+             wmts_style: camb:hex350_grid_mental_1920  # the style identifier of the wmts. If empty or this key is missing, it falls back to the default style.
              scheme: WebMercatorQuad  # the aligning scheme in pygeoapi.
              zoom:
                  min: 0
diff --git a/pygeoapi/provider/wmts_facade.py b/pygeoapi/provider/wmts_facade.py
@@ -161,7 +161,7 @@ def get_tiles(self, layer=None, tileset=None,
                 'tileMatrix': z,
                 'tileRow': y,
                 'tileCol': x,
-                'style': ''
+                'style': self.options.get('wmts_style', '')
             }
 
             if '?' in self.data:

Original file line number	Diff line number	Diff line change
`@@ -161,7 +161,7 @@ def get_tiles(self, layer=None, tileset=None,`
`161`	`161`	`'tileMatrix': z,`
`162`	`162`	`'tileRow': y,`
`163`	`163`	`'tileCol': x,`
`164`		`- 'style': ''`
	`164`	`+ 'style': self.options.get('wmts_style', '')`
`165`	`165`	`}`
`166`	`166`
`167`	`167`	`if '?' in self.data:`