I have a v-data-table on vue, which gets data and dynamically adds and deltes rows based on the incoming object of arrays, Vue is reactive to adding and deleting but doesn't seem to react to array replace.
My function to add, delete and replace is the setup the following way:
function update_helper(update_obj, dataObject, colObject) {
update_obj.Data.forEach((item) => {
if (typeof item.RowData !== 'undefined'){
let temp_list = updateRow(item, colObject);
temp_list.forEach((row_obj) => {
var found = dataObject.find(Element => Element.RowID === row_obj.RowID);
if (typeof found !== 'undefined'){
//Replace
var found = dataObject.findIndex(Element => Element.RowID === item.RowID);
//console.log(row_obj);
//console.log(dataObject[found]);
dataObject[found] = row_obj;
}
else{
// Add
dataObject.push(row_obj);
}
});
}
else if (typeof item.RowData === 'undefined') {
// Delete
var found = dataObject.findIndex(Element => Element.RowID === item.RowID);
dataObject = dataObject.splice(found, 1);
}
});
}
The function keeps track of the row Id . My replace function dataObject[found] = rowObj
works but isn't reactive, i.e the change can only be seen when I switch tabs or refresh the page.
How do I workaround this.
CodePudding user response:
Instead of passing it as argument, you could better have it as a data
variable like
data() {
return {
dataObject: [],
}
}
and then define your function inside the methods section like
methods: {
update_helper(update_obj, colObject) {
update_obj.Data.forEach((item) => {
if (typeof item.RowData !== 'undefined'){
let temp_list = updateRow(item, colObject);
temp_list.forEach((row_obj) => {
var found = dataObject.findIndex(Element => Element.RowID === row_obj.RowID);
if (found !== -1){
this.dataObject[found] = row_obj;
}
else{
// Add
this.dataObject.push(row_obj);
}
});
}
else if (typeof item.RowData === 'undefined') {
// Delete
var found = this.dataObject.findIndex(Element => Element.RowID === item.RowID);
dataObject = this.dataObject.splice(found, 1);
}
});
}
}
If possible you can declare the colObject also in the data()
section
Note: If you observe the above function body, I would have accessed the dataObject
using this
operator.