How do I update an array within an object from within state?
2
needing some help... how do I update the state to reflect a new schedule being added to a specific child (by id)?
I currently have a form that provides a new set of data that looks like this (with values from the form in the empty strings):
{
date: '',
parent: '',
activity: ''
}
I've created this function below, and I'm passing it the id of the child, and the new schedule which looks like the one above... I'm stuck on this one:
addSched = (id, schedule) => {
const newSched = this.state.children.map(child => {
if (child.id !== id) return child;
return {
...child,
schedules: schedule
};
});
this.setState({ children: newSched });
};
My current state looks like this:
state = {
children: [
{
id: 1,
firstName: 'Bella',
lastName: 'Laupama',
schedules: [
{
id: 1,
date: '25 December 2018',
parent: 'Chris',
activity: 'Christmas'
},
{
id: 2,
date: '31 December 2018',
parent: 'Laura',
activity: 'New Years Eve'
}
]
},
{
id: 2,
firstName: 'Cara',
lastName: 'Malane',
schedules: [
{
id: 1,
date: '25 December 2018',
parent: 'Chris',
activity: 'Christmas'
} ...etc
And the component that has the form has the following:
export default class AddSched extends React.Component {
state = {
date: '',
parent: '',
activity: ''
}
handleChange = e => {
this.setState({
[e.target.name]: e.target.value
})
}
submitHandler = e => {
e.preventDefault()
this.props.addSched(this.props.id, this.state)
console.log('SUBMITTED:', this.state)
this.setState({
date: '',
parent: '',
activity: ''
})
}
javascript reactjs
edited Nov 20 at 9:14
Nguyễn Thanh Tú
4,5892827
asked Nov 20 at 8:48
Tearz
384
add a comment |
2
needing some help... how do I update the state to reflect a new schedule being added to a specific child (by id)?
I currently have a form that provides a new set of data that looks like this (with values from the form in the empty strings):
{
date: '',
parent: '',
activity: ''
}
I've created this function below, and I'm passing it the id of the child, and the new schedule which looks like the one above... I'm stuck on this one:
addSched = (id, schedule) => {
const newSched = this.state.children.map(child => {
if (child.id !== id) return child;
return {
...child,
schedules: schedule
};
});
this.setState({ children: newSched });
};
My current state looks like this:
state = {
children: [
{
id: 1,
firstName: 'Bella',
lastName: 'Laupama',
schedules: [
{
id: 1,
date: '25 December 2018',
parent: 'Chris',
activity: 'Christmas'
},
{
id: 2,
date: '31 December 2018',
parent: 'Laura',
activity: 'New Years Eve'
}
]
},
{
id: 2,
firstName: 'Cara',
lastName: 'Malane',
schedules: [
{
id: 1,
date: '25 December 2018',
parent: 'Chris',
activity: 'Christmas'
} ...etc
And the component that has the form has the following:
export default class AddSched extends React.Component {
state = {
date: '',
parent: '',
activity: ''
}
handleChange = e => {
this.setState({
[e.target.name]: e.target.value
})
}
submitHandler = e => {
e.preventDefault()
this.props.addSched(this.props.id, this.state)
console.log('SUBMITTED:', this.state)
this.setState({
date: '',
parent: '',
activity: ''
})
}
javascript reactjs
edited Nov 20 at 9:14
Nguyễn Thanh Tú
4,5892827
asked Nov 20 at 8:48
Tearz
384
wouldn't you want to extend the current schedule for the child, rather than to replace it in theaddSchedfunction?
– Icepickle
Nov 20 at 8:53
add a comment |
2
2
2
needing some help... how do I update the state to reflect a new schedule being added to a specific child (by id)?
I currently have a form that provides a new set of data that looks like this (with values from the form in the empty strings):
{
date: '',
parent: '',
activity: ''
}
I've created this function below, and I'm passing it the id of the child, and the new schedule which looks like the one above... I'm stuck on this one:
addSched = (id, schedule) => {
const newSched = this.state.children.map(child => {
if (child.id !== id) return child;
return {
...child,
schedules: schedule
};
});
this.setState({ children: newSched });
};
My current state looks like this:
state = {
children: [
{
id: 1,
firstName: 'Bella',
lastName: 'Laupama',
schedules: [
{
id: 1,
date: '25 December 2018',
parent: 'Chris',
activity: 'Christmas'
},
{
id: 2,
date: '31 December 2018',
parent: 'Laura',
activity: 'New Years Eve'
}
]
},
{
id: 2,
firstName: 'Cara',
lastName: 'Malane',
schedules: [
{
id: 1,
date: '25 December 2018',
parent: 'Chris',
activity: 'Christmas'
} ...etc
And the component that has the form has the following:
export default class AddSched extends React.Component {
state = {
date: '',
parent: '',
activity: ''
}
handleChange = e => {
this.setState({
[e.target.name]: e.target.value
})
}
submitHandler = e => {
e.preventDefault()
this.props.addSched(this.props.id, this.state)
console.log('SUBMITTED:', this.state)
this.setState({
date: '',
parent: '',
activity: ''
})
}
javascript reactjs
edited Nov 20 at 9:14
Nguyễn Thanh Tú
4,5892827
asked Nov 20 at 8:48
Tearz
384
needing some help... how do I update the state to reflect a new schedule being added to a specific child (by id)?
I currently have a form that provides a new set of data that looks like this (with values from the form in the empty strings):
{
date: '',
parent: '',
activity: ''
}
I've created this function below, and I'm passing it the id of the child, and the new schedule which looks like the one above... I'm stuck on this one:
addSched = (id, schedule) => {
const newSched = this.state.children.map(child => {
if (child.id !== id) return child;
return {
...child,
schedules: schedule
};
});
this.setState({ children: newSched });
};
My current state looks like this:
state = {
children: [
{
id: 1,
firstName: 'Bella',
lastName: 'Laupama',
schedules: [
{
id: 1,
date: '25 December 2018',
parent: 'Chris',
activity: 'Christmas'
},
{
id: 2,
date: '31 December 2018',
parent: 'Laura',
activity: 'New Years Eve'
}
]
},
{
id: 2,
firstName: 'Cara',
lastName: 'Malane',
schedules: [
{
id: 1,
date: '25 December 2018',
parent: 'Chris',
activity: 'Christmas'
} ...etc
And the component that has the form has the following:
export default class AddSched extends React.Component {
state = {
date: '',
parent: '',
activity: ''
}
handleChange = e => {
this.setState({
[e.target.name]: e.target.value
})
}
submitHandler = e => {
e.preventDefault()
this.props.addSched(this.props.id, this.state)
console.log('SUBMITTED:', this.state)
this.setState({
date: '',
parent: '',
activity: ''
})
}
javascript reactjs
javascript reactjs
edited Nov 20 at 9:14
Nguyễn Thanh Tú
4,5892827
asked Nov 20 at 8:48
Tearz
384
edited Nov 20 at 9:14
Nguyễn Thanh Tú
4,5892827
asked Nov 20 at 8:48
Tearz
384
edited Nov 20 at 9:14
Nguyễn Thanh Tú
4,5892827
edited Nov 20 at 9:14
Nguyễn Thanh Tú
4,5892827
edited Nov 20 at 9:14
Nguyễn Thanh Tú
4,5892827
4,5892827
asked Nov 20 at 8:48
Tearz
384
asked Nov 20 at 8:48
Tearz
384
asked Nov 20 at 8:48
Tearz
384
384
wouldn't you want to extend the current schedule for the child, rather than to replace it in theaddSchedfunction?
– Icepickle
Nov 20 at 8:53
add a comment |
wouldn't you want to extend the current schedule for the child, rather than to replace it in theaddSchedfunction?
– Icepickle
Nov 20 at 8:53
wouldn't you want to extend the current schedule for the child, rather than to replace it in the
addSched function?– Icepickle
Nov 20 at 8:53
wouldn't you want to extend the current schedule for the child, rather than to replace it in the
addSched function?– Icepickle
Nov 20 at 8:53
add a comment |
1 Answer
1
active
oldest
votes
1
You can use the array spread operator to concatenate the existing array plus the new schedule:
schedules: [...child.schedules, schedule]
Here's the complete function with the change:
ddSched = (id, schedule) => {
const newSched = this.state.children.map(child => {
if (child.id !== id) return child;
return {
...child,
schedules: [...child.schedules, schedule]
};
});
this.setState({ children: newSched });
};
answered Nov 20 at 8:54
stone
4,5203859
So like this? addSched = (id, schedule) => { const newSched = this.state.children.map(child => { if (child.id !== id) return child return { ...child, schedules: [...child.schedules, schedule] } }) this.setState({ children: newSched }) }
– Tearz
Nov 20 at 9:02
Yes, that looks right.
– stone
Nov 20 at 9:03
1
absolute legend! it worked perfectly :)
– Tearz
Nov 20 at 9:10
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
You can use the array spread operator to concatenate the existing array plus the new schedule:
schedules: [...child.schedules, schedule]
Here's the complete function with the change:
ddSched = (id, schedule) => {
const newSched = this.state.children.map(child => {
if (child.id !== id) return child;
return {
...child,
schedules: [...child.schedules, schedule]
};
});
this.setState({ children: newSched });
};
answered Nov 20 at 8:54
stone
4,5203859
So like this? addSched = (id, schedule) => { const newSched = this.state.children.map(child => { if (child.id !== id) return child return { ...child, schedules: [...child.schedules, schedule] } }) this.setState({ children: newSched }) }
– Tearz
Nov 20 at 9:02
Yes, that looks right.
– stone
Nov 20 at 9:03
1
absolute legend! it worked perfectly :)
– Tearz
Nov 20 at 9:10
add a comment |
1
You can use the array spread operator to concatenate the existing array plus the new schedule:
schedules: [...child.schedules, schedule]
Here's the complete function with the change:
ddSched = (id, schedule) => {
const newSched = this.state.children.map(child => {
if (child.id !== id) return child;
return {
...child,
schedules: [...child.schedules, schedule]
};
});
this.setState({ children: newSched });
};
answered Nov 20 at 8:54
stone
4,5203859
So like this? addSched = (id, schedule) => { const newSched = this.state.children.map(child => { if (child.id !== id) return child return { ...child, schedules: [...child.schedules, schedule] } }) this.setState({ children: newSched }) }
– Tearz
Nov 20 at 9:02
Yes, that looks right.
– stone
Nov 20 at 9:03
1
absolute legend! it worked perfectly :)
– Tearz
Nov 20 at 9:10
add a comment |
1
1
1
You can use the array spread operator to concatenate the existing array plus the new schedule:
schedules: [...child.schedules, schedule]
Here's the complete function with the change:
ddSched = (id, schedule) => {
const newSched = this.state.children.map(child => {
if (child.id !== id) return child;
return {
...child,
schedules: [...child.schedules, schedule]
};
});
this.setState({ children: newSched });
};
answered Nov 20 at 8:54
stone
4,5203859
You can use the array spread operator to concatenate the existing array plus the new schedule:
schedules: [...child.schedules, schedule]
Here's the complete function with the change:
ddSched = (id, schedule) => {
const newSched = this.state.children.map(child => {
if (child.id !== id) return child;
return {
...child,
schedules: [...child.schedules, schedule]
};
});
this.setState({ children: newSched });
};
answered Nov 20 at 8:54
stone
4,5203859
edited Nov 20 at 22:01
answered Nov 20 at 8:54
stone
4,5203859
answered Nov 20 at 8:54
stone
4,5203859
answered Nov 20 at 8:54
stone
4,5203859
4,5203859
So like this? addSched = (id, schedule) => { const newSched = this.state.children.map(child => { if (child.id !== id) return child return { ...child, schedules: [...child.schedules, schedule] } }) this.setState({ children: newSched }) }
– Tearz
Nov 20 at 9:02
Yes, that looks right.
– stone
Nov 20 at 9:03
1
absolute legend! it worked perfectly :)
– Tearz
Nov 20 at 9:10
add a comment |
So like this? addSched = (id, schedule) => { const newSched = this.state.children.map(child => { if (child.id !== id) return child return { ...child, schedules: [...child.schedules, schedule] } }) this.setState({ children: newSched }) }
– Tearz
Nov 20 at 9:02
Yes, that looks right.
– stone
Nov 20 at 9:03
1
absolute legend! it worked perfectly :)
– Tearz
Nov 20 at 9:10
So like this? addSched = (id, schedule) => { const newSched = this.state.children.map(child => { if (child.id !== id) return child return { ...child, schedules: [...child.schedules, schedule] } }) this.setState({ children: newSched }) }
– Tearz
Nov 20 at 9:02
So like this? addSched = (id, schedule) => { const newSched = this.state.children.map(child => { if (child.id !== id) return child return { ...child, schedules: [...child.schedules, schedule] } }) this.setState({ children: newSched }) }
– Tearz
Nov 20 at 9:02
Yes, that looks right.
– stone
Nov 20 at 9:03
Yes, that looks right.
– stone
Nov 20 at 9:03
1
1
absolute legend! it worked perfectly :)
– Tearz
Nov 20 at 9:10
absolute legend! it worked perfectly :)
– Tearz
Nov 20 at 9:10
add a comment |
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wouldn't you want to extend the current schedule for the child, rather than to replace it in the
addSchedfunction?– Icepickle
Nov 20 at 8:53