replacing an object of a collection using spread operator
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0
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I am trying to return a new columns object with updated tabs array and replace this object the existing one in my datasource. Here's the relevant part. Below, uses spread, however, it adds my object to the end of the columns. How can I make it replace the existing column?
Thanks!
newState = {
columns: [
{ id: column.id, title: column.title, tabs: removedTabs },
...state.columns
],
columnOrder: ["chromeTabs", ...state.columnOrder]
};
codesandbox link
javascript ecmascript-6
edited Nov 22 at 16:32
Fabien Greard
1,0941520
asked Nov 22 at 15:39
ilteris
227418
add a comment |
up vote
0
down vote
favorite
I am trying to return a new columns object with updated tabs array and replace this object the existing one in my datasource. Here's the relevant part. Below, uses spread, however, it adds my object to the end of the columns. How can I make it replace the existing column?
Thanks!
newState = {
columns: [
{ id: column.id, title: column.title, tabs: removedTabs },
...state.columns
],
columnOrder: ["chromeTabs", ...state.columnOrder]
};
codesandbox link
javascript ecmascript-6
edited Nov 22 at 16:32
Fabien Greard
1,0941520
asked Nov 22 at 15:39
ilteris
227418
Clone and then explicitly set it
– Jared Goguen
Nov 22 at 15:44
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I am trying to return a new columns object with updated tabs array and replace this object the existing one in my datasource. Here's the relevant part. Below, uses spread, however, it adds my object to the end of the columns. How can I make it replace the existing column?
Thanks!
newState = {
columns: [
{ id: column.id, title: column.title, tabs: removedTabs },
...state.columns
],
columnOrder: ["chromeTabs", ...state.columnOrder]
};
codesandbox link
javascript ecmascript-6
edited Nov 22 at 16:32
Fabien Greard
1,0941520
asked Nov 22 at 15:39
ilteris
227418
I am trying to return a new columns object with updated tabs array and replace this object the existing one in my datasource. Here's the relevant part. Below, uses spread, however, it adds my object to the end of the columns. How can I make it replace the existing column?
Thanks!
newState = {
columns: [
{ id: column.id, title: column.title, tabs: removedTabs },
...state.columns
],
columnOrder: ["chromeTabs", ...state.columnOrder]
};
codesandbox link
javascript ecmascript-6
javascript ecmascript-6
edited Nov 22 at 16:32
Fabien Greard
1,0941520
asked Nov 22 at 15:39
ilteris
227418
edited Nov 22 at 16:32
Fabien Greard
1,0941520
asked Nov 22 at 15:39
ilteris
227418
edited Nov 22 at 16:32
Fabien Greard
1,0941520
edited Nov 22 at 16:32
Fabien Greard
1,0941520
edited Nov 22 at 16:32
Fabien Greard
1,0941520
1,0941520
asked Nov 22 at 15:39
ilteris
227418
asked Nov 22 at 15:39
ilteris
227418
asked Nov 22 at 15:39
ilteris
227418
227418
Clone and then explicitly set it
– Jared Goguen
Nov 22 at 15:44
add a comment |
Clone and then explicitly set it
– Jared Goguen
Nov 22 at 15:44
Clone and then explicitly set it
– Jared Goguen
Nov 22 at 15:44
Clone and then explicitly set it
– Jared Goguen
Nov 22 at 15:44
add a comment |
1 Answer
1
active
oldest
votes
up vote
2
down vote
accepted
newState = {
columns: [
...state.columns.filter(item => item.id !== column.id),
{ id: column.id, title: column.title, tabs: removedTabs }
],
columnOrder: [...state.columnOrder.filter(item => item !== 'chromeTabs'), "chromeTabs"]
};
return a filtred array and your new item, should do what you expect, using spread operator to replace existing item only work on object (because key are unique) not array.
const obj = {
cool: "is it cool ?"
};
console.log({ ...obj, cool: "definetly" });answered Nov 22 at 15:50
Fabien Greard
1,0941520
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
accepted
newState = {
columns: [
...state.columns.filter(item => item.id !== column.id),
{ id: column.id, title: column.title, tabs: removedTabs }
],
columnOrder: [...state.columnOrder.filter(item => item !== 'chromeTabs'), "chromeTabs"]
};
return a filtred array and your new item, should do what you expect, using spread operator to replace existing item only work on object (because key are unique) not array.
const obj = {
cool: "is it cool ?"
};
console.log({ ...obj, cool: "definetly" });answered Nov 22 at 15:50
Fabien Greard
1,0941520
add a comment |
up vote
2
down vote
accepted
newState = {
columns: [
...state.columns.filter(item => item.id !== column.id),
{ id: column.id, title: column.title, tabs: removedTabs }
],
columnOrder: [...state.columnOrder.filter(item => item !== 'chromeTabs'), "chromeTabs"]
};
return a filtred array and your new item, should do what you expect, using spread operator to replace existing item only work on object (because key are unique) not array.
const obj = {
cool: "is it cool ?"
};
console.log({ ...obj, cool: "definetly" });answered Nov 22 at 15:50
Fabien Greard
1,0941520
add a comment |
up vote
2
down vote
accepted
up vote
2
down vote
accepted
newState = {
columns: [
...state.columns.filter(item => item.id !== column.id),
{ id: column.id, title: column.title, tabs: removedTabs }
],
columnOrder: [...state.columnOrder.filter(item => item !== 'chromeTabs'), "chromeTabs"]
};
return a filtred array and your new item, should do what you expect, using spread operator to replace existing item only work on object (because key are unique) not array.
const obj = {
cool: "is it cool ?"
};
console.log({ ...obj, cool: "definetly" });answered Nov 22 at 15:50
Fabien Greard
1,0941520
newState = {
columns: [
...state.columns.filter(item => item.id !== column.id),
{ id: column.id, title: column.title, tabs: removedTabs }
],
columnOrder: [...state.columnOrder.filter(item => item !== 'chromeTabs'), "chromeTabs"]
};
return a filtred array and your new item, should do what you expect, using spread operator to replace existing item only work on object (because key are unique) not array.
const obj = {
cool: "is it cool ?"
};
console.log({ ...obj, cool: "definetly" });const obj = {
cool: "is it cool ?"
};
console.log({ ...obj, cool: "definetly" });const obj = {
cool: "is it cool ?"
};
console.log({ ...obj, cool: "definetly" });answered Nov 22 at 15:50
Fabien Greard
1,0941520
edited Nov 22 at 16:08
answered Nov 22 at 15:50
Fabien Greard
1,0941520
answered Nov 22 at 15:50
Fabien Greard
1,0941520
answered Nov 22 at 15:50
Fabien Greard
1,0941520
1,0941520
add a comment |
add a comment |
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Clone and then explicitly set it
– Jared Goguen
Nov 22 at 15:44