fix: fetch decimals as strings from clickhouse to not loose precision

Author: ivictbor

adminforth/dataConnectors/clickhouse.ts

@@ -7,8 +7,8 @@ import { AdminForthDataTypes, AdminForthFilterOperators, AdminForthSortDirection
 
 class ClickhouseConnector extends AdminForthBaseConnector implements IAdminForthDataSourceConnector {
 
-    dbName: string;
-    url: string;
+  dbName: string;
+  url: string;
 
   async setupClient(url): Promise<void> {
     this.dbName = new URL(url).pathname.replace('/', '');
@@ -217,7 +217,13 @@ class ClickhouseConnector extends AdminForthBaseConnector implements IAdminForth
         sort: { field: string, direction: AdminForthSortDirections }[], 
         filters: { field: string, operator: AdminForthFilterOperators, value: any }[],
     }): Promise<any[]> {
-      const columns = resource.dataSourceColumns.map((col) => col.name).join(', ');
+      const columns = resource.dataSourceColumns.map((col) => {
+        // for decimal cast to string
+        if (col.type == AdminForthDataTypes.DECIMAL) {
+          return `toString(${col.name}) as ${col.name}`
+        }
+        return col.name;
+      }).join(', ');
       const tableName = resource.table;
 
       const where = this.whereClause(resource, filters);

adminforth/documentation/docs/tutorial/05-Plugins/09-open-signup.md

@@ -103,6 +103,7 @@ export default {
           secretAccessKey: process.env.AWS_SECRET_ACCESS_KEY as string,
           //diff-add
         }),
+        //diff-add
       },
     }),
     ...