#290 field name validation

packages/builder/src/components/nav/ModelSetupNav/ModelSetupNav.svelte

@@ -52,7 +52,35 @@
     })
   }
 
+  function validate() {
+    let errors = []
+    for (let field of Object.values($backendUiStore.draftModel.schema)) {
+      const restrictedFieldNames = ["type", "modelId"]
+      if (field.name.startsWith("_")) {
+        errors.push(`field '${field.name}' - name cannot begin with '_''`)
+      } else if (restrictedFieldNames.includes(field.name)) {
+        errors.push(`field '${field.name}' - is a restricted name, please rename`)
+      } else if (!field.name || !field.name.trim()) {
+        errors.push("field name cannot be blank")
+      }
+    }
+
+    if (!$backendUiStore.draftModel.name) {
+      errors.push("Table name cannot be blank")
+    }
+
+    return errors
+  }
+
   async function saveModel() {
+    const errors = validate()
+    if (errors.length > 0) {
+      notifier.danger(
+        errors.join("/n")
+      )
+      return
+    }
+
     await backendUiStore.actions.models.save({
       model: $backendUiStore.draftModel,
     })