Change with_setting to accept any JSON value

src/http/playground_source.rs

@@ -1,5 +1,6 @@
 use std::collections::HashMap;
 
+use crate::Value;
 use serde::Serialize;
 
 /// Generate the page for GraphQL Playground
@@ -564,7 +565,7 @@ pub struct GraphQLPlaygroundConfig<'a> {
     endpoint: &'a str,
     subscription_endpoint: Option<&'a str>,
     headers: Option<HashMap<&'a str, &'a str>>,
-    settings: Option<HashMap<&'a str, &'a str>>,
+    settings: Option<HashMap<&'a str, Value>>,
 }
 
 impl<'a> GraphQLPlaygroundConfig<'a> {
@@ -597,7 +598,17 @@ impl<'a> GraphQLPlaygroundConfig<'a> {
     }
 
     /// Set Playground setting for per query.
-    pub fn with_setting(mut self, name: &'a str, value: &'a str) -> Self {
+    ///
+    /// ```
+    /// # use async_graphql::Value;
+    /// # use async_graphql::http::GraphQLPlaygroundConfig;
+    /// GraphQLPlaygroundConfig::new("/api/graphql")
+    ///     .with_setting("setting", false)
+    ///     .with_setting("other", Value::Null);
+    /// ```
+    pub fn with_setting(mut self, name: &'a str, value: impl Into<Value>) -> Self {
+        let value = value.into();
+
         if let Some(settings) = &mut self.settings {
             settings.insert(name, value);
         } else {
@@ -608,3 +619,30 @@ impl<'a> GraphQLPlaygroundConfig<'a> {
         self
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::collections::BTreeMap;
+
+    #[test]
+    fn test_with_setting_can_use_any_json_value() {
+        let settings = GraphQLPlaygroundConfig::new("")
+            .with_setting("string", "string")
+            .with_setting("bool", false)
+            .with_setting("number", 10)
+            .with_setting("null", Value::Null)
+            .with_setting("array", Vec::from([1,2,3]))
+            .with_setting("object", BTreeMap::new());
+
+        let json = serde_json::to_value(settings).unwrap();
+        let settings = json["settings"].as_object().unwrap();
+
+        assert!(settings["string"].as_str().is_some());
+        assert!(settings["bool"].as_bool().is_some());
+        assert!(settings["number"].as_u64().is_some());
+        assert!(settings["null"].as_null().is_some());
+        assert!(settings["array"].as_array().is_some());
+        assert!(settings["object"].as_object().is_some());
+    }
+}