Use explicit undefined checks to preserve false boolean values

Author: mcraeteisha

src/mixins/extensions/DataManager.js

@@ -12,12 +12,17 @@ export default {
           screen,
           safeDotName,
           `
-            this.getValue(${JSON.stringify(v.name)}, this.vdata) || 
-            this.getValue(${JSON.stringify(v.name)}, data) || 
-            this.initialValue(
-              '${component}',
-              '${dataFormat}',
-              ${JSON.stringify(v.config)})
+            (() => {
+              const vdataVal = this.getValue(${JSON.stringify(
+                v.name
+              )}, this.vdata);
+              if (vdataVal !== undefined) return vdataVal;
+              const dataVal = this.getValue(${JSON.stringify(v.name)}, data);
+              if (dataVal !== undefined) return dataVal;
+              return this.initialValue('${component}', '${dataFormat}', ${JSON.stringify(
+            v.config
+          )});
+            })()
           `,
           v.name
         );

src/mixins/extensions/DefaultValues.js

@@ -27,10 +27,10 @@ export default {
     setupDefaultValue(screen, name, value) {
       const safeDotName = this.safeDotName(name);
       const defaultComputedName = `default_${safeDotName}__`;
-      this.addData(screen, `${name}_was_filled__`, `!!this.getValue(${JSON.stringify(name)}, this.vdata) || !!this.getValue(${JSON.stringify(name)}, data)`);
+      this.addData(screen, `${name}_was_filled__`, `this.getValue(${JSON.stringify(name)}, this.vdata) !== undefined || this.getValue(${JSON.stringify(name)}, data) !== undefined`);
       this.addMounted(
-        screen, 
-        `if (!this.${safeDotName}) {
+        screen,
+        `if (this.${safeDotName} === undefined) {
             this.tryFormField(${JSON.stringify(name)}, () => {
             this.${safeDotName} = ${value};
             this.setValue(${JSON.stringify(name)}, ${value}, this.vdata, this);});