Auto-generation of JSON file for all pattern params (#452)

Have enabled a JSON file for the patterns browser.
This is the first step in enhancing the patterns
browser page, including better filtering and sorting
mechanisms.

Author: danmacpherson

config.yaml

@@ -30,3 +30,12 @@ taxonomies:
   rh_product: 'rh_products'
   other_product: 'other_products'
   blog_tag: 'blog_tags'
+
+mediaTypes:
+  application/json:
+    suffixes:
+    - json
+
+outputFormats:
+  patterns:
+    mediatype: application/json

content/patterns/_index.md

@@ -4,6 +4,9 @@ menu:
   main:
     weight: 10
     name: Patterns
+outputs:
+  - html
+  - json
 ---
 
 Browse through available patterns and their respective documentation for deployment and operation. Filter patterns by type, industry, and product.

layouts/patterns/list.json.json

@@ -0,0 +1,9 @@
+{{- if (eq .RelPermalink "/patterns/") }}
+  {{- $patterns := where $.Pages "Section" "patterns"}}
+  {{- $patterns_len := $patterns | len }}
+    {{- $pattern_list := slice }}
+    {{- range $index, $pattern :=  $patterns.ByTitle }}
+      {{- $pattern_list = $pattern_list | append (dict $pattern.Title $pattern.Params) }}
+    {{- end }}
+  {{- $pattern_list | jsonify }}
+{{- end }}