On click of AddMore button, I am pushing newData object into oldData, but before pushing I need to check below condition.
I want to check if productType, processTechType, familyMake and lineId columns values are exist more than once in oldData array, then it will throw error.
Below is my data:
const newData = {"processTypeId":0,"productType":"Savoury","processTechType":"Mustard","familyMake":["Jelly","Noodles"],"lineId":["R_X002_ACCESS","R_X002_BIB"],"batchSize":"4"}
const oldData = [
{"processTypeId":0,"productType":"Savoury","processTechType":"Mustard","familyMake":["Jelly","Noodles"],"lineId":["R_X002_ACCESS","R_X002_BIB"],"batchSize":"1"},
{"processTypeId":0,"productType":"Savoury","processTechType":"Mustard","familyMake":["Jelly","Noodles"],"lineId":["R_X002_ACCESS","R_X002_BIB"],"batchSize":"4"}
];
I did below code and it is perfectly working, but my code is comparing whole object with oldData array,
but I want to check for only 4 column of newData object with oldData array.
Can anyone help me to do this.
addNewType(rowdata) {
const newData = JSON.stringify(rowdata.value);
const oldData = JSON.stringify(this.items.value);
if ((oldData.split(newData).length - 1) >= 2) {
console.log("Item exist");
} else {
this.isRowExist = false;
this.addItem(this.createItem(null));
}
}
you can do it like this:
addNewType(newData) {
let isDuplicate = false;
for(let data of this.oldData){
if(data.productType == newData.productType ||
data.processTechType == newData.processTechType ||
data.familyMake == newData.familyMake ||
data.lineId == newData.lineId){
isDuplicate = true;
break;
}
}
if(isDuplicate){
// Do nothing
}else{
this.oldData.push(newData);
}
}
Using a find (*):
addNewType(newData) {
const el=this.oldData.find(data=>
data.productType == newData.productType ||
data.processTechType == newData.processTechType ||
data.familyMake.join('|') == newData.familyMake.join('|')) ||
data.lineId == newData.lineId)
if (!el)
{
this.oldData.push(newData)
}
}
(*) See that using an "if" is like a "normal loop". The function return "undefined" if not find, so we use the comparison if (!el){...}
NOTE1: when we need compare two arrays we need compare the "value" of the arrays. This is the reason I use "join" -that return an string-, so I compare the two strings.
Update using filter
addNewType(newData) {
const elements = this.oldData.filter(data=>data.productType == newData.productType || data.processTechType == newData.processTechType || data.familyMake.join('|') == newData.familyMake.join('|') || data.lineId == newData.lineId)
if (elements.length <= 0) {
this.oldData.push(newData)
} else {
// add check here in case of already existance
console.log("already exists " + elements.length + " elements equals");
}
}
NOTE2: the comparison says that if one of the properties are equal. If you need that all the properties was equal use && instead ||
** fixing syntax errors in second code sample