food.js?58d1:34 Uncaught TypeError: Cannot read property 'pid' of undefined

? ? at eval (food.js?58d1:34)

? ? at Array.filter (<anonymous>)

? ? at Food.eval (food.js?58d1:34)

? ? at Food.clearCallBacks (index.js?36eb:1754)

? ? at updateComponent (index.js?36eb:1665)

? ? at rerender (index.js?36eb:1700)

changeCata(selectCata){

????????this.setState({selectCata:selectCata});

????????if(this.state.foodlist.some(item=>item.pid==selectCata.id)){

????????????//不用加載數據

???????? ?this.setState({currentlist:this.state.foodlist.filter(item=>item.pid==selectCata.id)})????

????????}else{

????????????//需要加載數據

???????? this.setState({foodlist:this.state.foodlist.concat(this.getData(selectCata))},()=>{

???????? ??? this.setState({currentlist:this.state.foodlist.filter(item=>item.pid==selectCata.id)})?

???????? }) ;

????????}

????}