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copied!<p>While Breeze team works on it, and if somebody needs this before it's done, here is code I wrote for making a copy of object and it's navigation properties:</p> <pre><code> function createSimpleObject(heavyObject) { if (heavyObject === undefined) return {}; var simpleObject = {}; manager.metadataStore._structuralTypeMap[heavyObject.entityType.name].dataProperties.forEach(function (singleProperty) { if (!singleProperty.isPartOfKey) simpleObject[singleProperty.name] = heavyObject[singleProperty.name](); }); return simpleObject; } function makeNavigationProperties(newObject, oldObject, navigationProperties) { if (oldObject === undefined || navigationProperties === undefined) return {}; navigationProperties.forEach(function (singleNavigationProperty) { var selectedArray = []; if (ko.isObservable(oldObject[singleNavigationProperty])) { selectedArray = oldObject[singleNavigationProperty](); } else selectedArray = oldObject[singleNavigationProperty]; if (selectedArray) { selectedArray.forEach(function (singleObject) { var simpleObject = {}; manager.metadataStore._structuralTypeMap[singleObject.entityType.name].dataProperties.forEach(function (singleProperty) { if (!singleProperty.isPartOfKey) { if (singleProperty.relatedNavigationProperty) { if (singleProperty.relatedNavigationProperty.entityTypeName === oldObject.entityType.name) { simpleObject[singleProperty.name] = newObject.id(); } else { if (ko.isObservable(singleObject[singleProperty.name])) simpleObject[singleProperty.name] = singleObject[singleProperty.name](); else simpleObject[singleProperty.name] = singleObject[singleProperty.name]; } } else { if (ko.isObservable(singleObject[singleProperty.name])) simpleObject[singleProperty.name] = singleObject[singleProperty.name](); else simpleObject[singleProperty.name] = singleObject[singleProperty.name]; } } }); manager.createEntity(singleObject.entityType.shortName, simpleObject); }); } }); } </code></pre> <p>and here is method that creates object:</p> <pre><code>function createMyObject(originalObject, navigationProperties){ var newMyObject = manager.createEntity('MyObject', createSimpleObject(originalObject)); makeNavigationProperties(newMyObject, originalObject, navigationProperties); return newMyObject; } </code></pre> <p>and finally code that calls creation of new object:</p> <pre><code>copiedObject(datacontext.createMyNewObject(originalObject(), ['navigationProperty1', 'navigationProperty2', 'navigationProperty3'])); </code></pre> <p>where copiedObject is observable containing new object, originalObject is object that I want to copy and 2nd parameter contains properties I want to copy. It only works for direct children of original object, I didn't need children of children so that is missing. It can be used with or without parameters so I use exactly the same function to create empty object or to copy entities with no children.</p> <p><strong>EDIT</strong></p> <p>Wards code works perfectly! Only one thing I'd change is his <code>fk</code> detection and use following to enable copying Junction tables:</p> <pre><code>var fk = false; navProp.entityType.foreignKeyProperties.forEach(function (singleProperty) { if (singleProperty.relatedNavigationProperty.entityTypeName == newItem.entityType.name) fk = singleProperty.name; }); if (!fk) return; </code></pre>

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