Angular ngFor报错：Cannot convert object to primitive value 求助

云原生阿岚

2026-8-24

问题：Angular ngFor 遍历对象时出现类型转换错误

我已导入一个含示例数据的JSON文件，希望基于其创建表格。使用OrderLineItems.ts接口类处理数据后，将该文件导入至Shopware Grid组件中，用console.log调试时功能正常。但在shopware-grid.component.html中尝试结合ngFor使用products属性时，出现如下转换错误：

core.mjs:6362 ERROR TypeError: Cannot convert object to primitive value
    at NgForOf.ngDoCheck (common.mjs:3200:87)
    at callHook (core.mjs:2504:18)
    at callHooks (core.mjs:2463:17)
    at executeInitAndCheckHooks (core.mjs:2414:9)
    at refreshView (core.mjs:11713:21)
    at refreshComponent (core.mjs:12793:13)
    at refreshChildComponents (core.mjs:11488:9)
    at refreshView (core.mjs:11748:13)
    at refreshComponent (core.mjs:12793:13)
    at refreshChildComponents (core.mjs:11488:9)