'Cannot read property 'map' of undefined' when using connect with mapStateToProps
I am trying to display my state (users) in my react/redux functional component:
const Dumb = ({ users }) => {
console.log('users', users)
return (
<div>
<ul>
{users.map(user => <li>user</li>)}
</ul>
</div>
)
}
const data = state => ({
users: state
})
connect(data, null)(Dumb)
Dumb is used in a container component. The users.map statement has an issue but I thought that the data was injected through the connect statement? the reducer has an initial state with 1 name in it:
const users = (state = ['Jack'], action) => {
switch (action.type) {
case 'RECEIVED_DATA':
return action.data
default:
return state
}
}
CodeSandbox
reactjs redux react-redux
edited Nov 20 '18 at 5:25
Shubham Khatri
83.3k15101141
asked Oct 3 '18 at 11:39
bier hierbier hier
2,54593373
add a comment |
I am trying to display my state (users) in my react/redux functional component:
const Dumb = ({ users }) => {
console.log('users', users)
return (
<div>
<ul>
{users.map(user => <li>user</li>)}
</ul>
</div>
)
}
const data = state => ({
users: state
})
connect(data, null)(Dumb)
Dumb is used in a container component. The users.map statement has an issue but I thought that the data was injected through the connect statement? the reducer has an initial state with 1 name in it:
const users = (state = ['Jack'], action) => {
switch (action.type) {
case 'RECEIVED_DATA':
return action.data
default:
return state
}
}
CodeSandbox
reactjs redux react-redux
edited Nov 20 '18 at 5:25
Shubham Khatri
83.3k15101141
asked Oct 3 '18 at 11:39
bier hierbier hier
2,54593373
add a comment |
I am trying to display my state (users) in my react/redux functional component:
const Dumb = ({ users }) => {
console.log('users', users)
return (
<div>
<ul>
{users.map(user => <li>user</li>)}
</ul>
</div>
)
}
const data = state => ({
users: state
})
connect(data, null)(Dumb)
Dumb is used in a container component. The users.map statement has an issue but I thought that the data was injected through the connect statement? the reducer has an initial state with 1 name in it:
const users = (state = ['Jack'], action) => {
switch (action.type) {
case 'RECEIVED_DATA':
return action.data
default:
return state
}
}
CodeSandbox
reactjs redux react-redux
edited Nov 20 '18 at 5:25
Shubham Khatri
83.3k15101141
asked Oct 3 '18 at 11:39
bier hierbier hier
2,54593373
I am trying to display my state (users) in my react/redux functional component:
const Dumb = ({ users }) => {
console.log('users', users)
return (
<div>
<ul>
{users.map(user => <li>user</li>)}
</ul>
</div>
)
}
const data = state => ({
users: state
})
connect(data, null)(Dumb)
Dumb is used in a container component. The users.map statement has an issue but I thought that the data was injected through the connect statement? the reducer has an initial state with 1 name in it:
const users = (state = ['Jack'], action) => {
switch (action.type) {
case 'RECEIVED_DATA':
return action.data
default:
return state
}
}
CodeSandbox
reactjs redux react-redux
reactjs redux react-redux
edited Nov 20 '18 at 5:25
Shubham Khatri
83.3k15101141
asked Oct 3 '18 at 11:39
bier hierbier hier
2,54593373
edited Nov 20 '18 at 5:25
Shubham Khatri
83.3k15101141
asked Oct 3 '18 at 11:39
bier hierbier hier
2,54593373
edited Nov 20 '18 at 5:25
Shubham Khatri
83.3k15101141
edited Nov 20 '18 at 5:25
Shubham Khatri
83.3k15101141
edited Nov 20 '18 at 5:25
Shubham Khatri
83.3k15101141
83.3k15101141
asked Oct 3 '18 at 11:39
bier hierbier hier
2,54593373
asked Oct 3 '18 at 11:39
bier hierbier hier
2,54593373
asked Oct 3 '18 at 11:39
bier hierbier hier
2,54593373
2,54593373
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You aren't using the connected component while rendering and hence the props aren't available in the component
const ConnectedDumb = connect(
data,
null
)(Dumb);
class Container extends React.Component {
render() {
return (
<div>
<ConnectedDumb />
</div>
);
}
}
Working demo
answered Oct 3 '18 at 11:45
Shubham KhatriShubham Khatri
83.3k15101141
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
You aren't using the connected component while rendering and hence the props aren't available in the component
const ConnectedDumb = connect(
data,
null
)(Dumb);
class Container extends React.Component {
render() {
return (
<div>
<ConnectedDumb />
</div>
);
}
}
Working demo
answered Oct 3 '18 at 11:45
Shubham KhatriShubham Khatri
83.3k15101141
add a comment |
You aren't using the connected component while rendering and hence the props aren't available in the component
const ConnectedDumb = connect(
data,
null
)(Dumb);
class Container extends React.Component {
render() {
return (
<div>
<ConnectedDumb />
</div>
);
}
}
Working demo
answered Oct 3 '18 at 11:45
Shubham KhatriShubham Khatri
83.3k15101141
add a comment |
You aren't using the connected component while rendering and hence the props aren't available in the component
const ConnectedDumb = connect(
data,
null
)(Dumb);
class Container extends React.Component {
render() {
return (
<div>
<ConnectedDumb />
</div>
);
}
}
Working demo
answered Oct 3 '18 at 11:45
Shubham KhatriShubham Khatri
83.3k15101141
You aren't using the connected component while rendering and hence the props aren't available in the component
const ConnectedDumb = connect(
data,
null
)(Dumb);
class Container extends React.Component {
render() {
return (
<div>
<ConnectedDumb />
</div>
);
}
}
Working demo
answered Oct 3 '18 at 11:45
Shubham KhatriShubham Khatri
83.3k15101141
answered Oct 3 '18 at 11:45
Shubham KhatriShubham Khatri
83.3k15101141
answered Oct 3 '18 at 11:45
Shubham KhatriShubham Khatri
83.3k15101141
answered Oct 3 '18 at 11:45
Shubham KhatriShubham Khatri
83.3k15101141
83.3k15101141
add a comment |
add a comment |
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