From 1d27a34e708c0412eb71f99592288476a70644d8 Mon Sep 17 00:00:00 2001
From: colemanw <coleman@civicrm.org>
Date: Tue, 22 Aug 2023 14:16:31 -0400
Subject: [PATCH] Afform - Fix clearing fields when deselecting existing entity

This regressed in e2c263c427119a6cc40f45e67898fa71240d57bf
---
 ext/afform/core/ang/af/afForm.component.js | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/ext/afform/core/ang/af/afForm.component.js b/ext/afform/core/ang/af/afForm.component.js
index c706043e3b6b..3208ff8b1351 100644
--- a/ext/afform/core/ang/af/afForm.component.js
+++ b/ext/afform/core/ang/af/afForm.component.js
@@ -43,11 +43,11 @@
       // With no arguments this will prefill the entire form based on url args
       // With selectedEntity, selectedIndex & selectedId provided this will prefill a single entity
       this.loadData = function(selectedEntity, selectedIndex, selectedId, selectedField) {
-        var toLoad = 0,
-          params = {name: ctrl.getFormMeta().name, args: {}};
+        let toLoad = false;
+        const params = {name: ctrl.getFormMeta().name, args: {}};
         // Load single entity
         if (selectedEntity) {
-          toLoad = 1;
+          toLoad = !!selectedId;
           params.matchField = selectedField;
           params.args[selectedEntity] = {};
           params.args[selectedEntity][selectedIndex] = selectedId;
@@ -57,7 +57,7 @@
           args = _.assign({}, $scope.$parent.routeParams || {}, $scope.$parent.options || {});
           _.each(schema, function (entity, entityName) {
             if (args[entityName] || entity.actions.update) {
-              toLoad++;
+              toLoad = true;
             }
             if (args[entityName] && typeof args[entityName] === 'string') {
               args[entityName] = args[entityName].split(',');
@@ -79,10 +79,11 @@
         }
         // Clear existing contact selection
         else if (selectedEntity) {
-          data[selectedEntity][selectedIndex].fields = {};
-          if (data[selectedEntity][selectedIndex].joins) {
-            data[selectedEntity][selectedIndex].joins = {};
-          }
+          // Delete object keys without breaking object references
+          Object.keys(data[selectedEntity][selectedIndex].fields).forEach(key => delete data[selectedEntity][selectedIndex].fields[key]);
+          // Fill pre-set values
+          angular.merge(data[selectedEntity][selectedIndex].fields, _.cloneDeep(schema[selectedEntity].data || {}));
+          data[selectedEntity][selectedIndex].joins = {};
         }
       };