Fix variable query issue

Fixes #48

Author: marcusolsson

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.9.2 (2021-02-03)
+
+[Full changelog](https://github.com/marcusolsson/grafana-json-datasource/compare/v0.9.1...v0.9.2)
+
+### Bug fixes
+
+- Variable queries fail with error ([#48](https://github.com/marcusolsson/grafana-json-datasource/issues/48))
+
 ## 0.9.1 (2021-02-01)
 
 [Full changelog](https://github.com/marcusolsson/grafana-json-datasource/compare/v0.9.0...v0.9.1)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "marcusolsson-json-datasource",
-  "version": "0.9.1",
+  "version": "0.9.2",
   "description": "A data source plugin for loading JSON APIs into Grafana.",
   "scripts": {
     "build": "grafana-toolkit plugin:build",

src/api.ts

@@ -119,7 +119,7 @@ export default class Api {
       headers: recordHeaders,
     };
 
-    if (method !== 'GET' && data) {
+    if (req.method !== 'GET' && data) {
       req.data = data;
     }
 

src/datasource.ts

@@ -116,7 +116,12 @@ export class DataSource extends DataSourceApi<JsonApiQuery, JsonApiDataSourceOpt
     const urlPathTreated = templateSrv.replace(query.urlPath);
     const jsonPathTreated = templateSrv.replace(query.jsonPath);
 
-    const response = await this.api.get(urlPathTreated, queryParamsTreated);
+    const params: Array<Pair<string, string>> = [];
+    new URLSearchParams('?' + queryParamsTreated).forEach((value: string, key: string) => {
+      params.push([key, value]);
+    });
+
+    const response = await this.api.get('GET', urlPathTreated, params);
 
     return JSONPath({
       path: jsonPathTreated,