Merge pull request #17 from Destroy666x/AddParametersBlock

Add GraphiQL parameters Twig block

README.md

@@ -86,6 +86,7 @@ More
 ------------
 
 * [Custom HTTP headers](Resources/doc/custom-http-headers.md)
+* [Custom GraphiQL parameters](Resources/doc/custom-parameters.md)
 * [Define JavaScript libraries' versions](Resources/doc/libraries-versions.md)
 * [Define a custom GraphQL endpoint](Resources/doc/graphql-endpoint.md)
 

Resources/doc/custom-parameters.md

@@ -0,0 +1,29 @@
+Custom GraphiQL parameters
+==========================
+
+By default, only the `fetcher` parameter is passed to GraphiQL's React component.
+To add more:
+
+1. Override the default GraphiQL template:
+
+```yaml
+# config/packages/graphiql.yaml or app/config/config.yml for Symfony without Flex
+overblog_graphiql:
+    template: "GraphiQL/index.html.twig"
+```
+
+2. Create a new template:
+
+```twig
+{# templates/GraphiQL/index.html.twig #}
+{% extends '@OverblogGraphiQL/GraphiQL/index.html.twig' %}
+
+{% block graphiql_params %}
+{{ parent() }},
+defaultQuery: `query SomeQuery($param: String) {
+  items(param: $param) {
+    someField
+  }
+}`
+{% endblock graphiql_params %}
+```

Resources/views/GraphiQL/index.html.twig

@@ -58,7 +58,9 @@
 
       ReactDOM.render(
         React.createElement(GraphiQL, {
+          {% block graphiql_params %}
           fetcher: graphQLFetcher
+          {% endblock graphiql_params %}
         }),
         document.body
       )