Keep null values in oemetadata

dataedit/static/metaedit/metaedit.js

@@ -217,11 +217,26 @@ var MetaEdit = function (config) {
 
     }
 
+    // Function to recursively convert empty strings to null
+    function convertEmptyStringsToNull(obj) {
+        for (var key in obj) {
+            if (obj.hasOwnProperty(key)) {
+                if (typeof obj[key] === 'string' && obj[key] === '') {
+                    obj[key] = null;
+                } else if (typeof obj[key] === 'object') {
+                    convertEmptyStringsToNull(obj[key]);
+                }
+            }
+        }
+    }
+
     function bindButtons() {
         // download
         $('#metaedit-download').bind('click', function downloadMetadata() {
             var json = config.editor.getValue();
             // create data url
+            convertEmptyStringsToNull(json);
+            console.log(json);
             json = JSON.stringify(json, null, 1);
             blob = new Blob([json], { type: "application/json" }),
                 dataUrl = URL.createObjectURL(blob);
@@ -296,7 +311,7 @@ var MetaEdit = function (config) {
                     array_controls_top: true,
                     no_additional_properties: true,
                     required_by_default: false,
-                    remove_empty_properties: true, // don't remove, otherwise the metadata will not pass the validation on the server
+                    remove_empty_properties: false, // don't remove, otherwise the metadata will not pass the validation on the server
                 }
 
                 config.editor = new JSONEditor(config.form[0], options);

docs/install-and-documentation/oeplatform-code/features/metaBuilder/index.md

@@ -0,0 +1,11 @@
+# metaBuilder
+
+The metaBuilder is a tool to create, edit and download metadata for the oeplatform.
+
+## Create
+
+## Download
+
+We currently offer multiple download buttons on the OEP. You can either download the metadata while editing the metadata on a table or when you use the standalone version of the metaBuilder. It is also possible to download the metadata when you view the metadata on a table in the "meta information" tab.
+
+When you download the metadata json file the empty fields are kept as "null" values. 

mkdocs.yml

@@ -109,6 +109,7 @@ nav:
           - install-and-documentation/oeplatform-code/web-api/oekg-api/index.md 
       - Features:
         - install-and-documentation/oeplatform-code/features/index.md
+        - metaBuilder Metadata creation: install-and-documentation/oeplatform-code/features/metaBuilder/index.md
         - Open Peer Review Process:
           - install-and-documentation/oeplatform-code/features/open-peer-review-process/index.md
           - Technical docs: install-and-documentation/oeplatform-code/features/open-peer-review-process/technical-docs.md

versions/changelogs/current.md

@@ -12,6 +12,8 @@
 
 - UI Feature for Publishing Draft Tables: Integrated JavaScript to handle publish actions, including schema selection and confirmation steps, ensuring a seamless user experience.  [(PR#1526)](https://github.com/OpenEnergyPlatform/oeplatform/pull/1526)
 
+- The oemetadata on the oep is now stored including null / none values. Users reported that it otherwise is confusing and hinders there metadata workflow. This is related to the update in [omi v0.2.0](https://pypi.org/project/omi/0.2.0/) [(PR#1541)](https://github.com/OpenEnergyPlatform/oeplatform/pull/1541)
+
 ### Features
 
 - Add a htmx based page loading after initial page is visible to the user. [(#1503)](https://github.com/OpenEnergyPlatform/oeplatform/pull/1503)