react-bootstrap Accordion not collapsing with map

问题:

I have an array of items I would like to create Panels out of which would eventually be inserted into the Accordion.

In one file, I have:

var items = this.state.contents.map(function(content, index) {
  return <Content {...content}, key={index}/>
};

return (
  <Accordion>
    {items}
  </Accordion>
);

In another file called Content I have:

return(
  <Panel header={this.props.header} eventKey={this.props.key}>
    {this.props.body}
  </Panel>
);

When I have the Accordion and Panel in the same file, they work. But when I generate the Panel using map after splitting them into two files, it doesn't seem to collapse.

回答1:

Here is the solution

<Accordion>
  {this.item.map(item =>
     <AcPanel key={item.id} item={item} eventKey={item.id} />
  )}
</Accordion>

In AcPanel Class use {...this.props} for fetch all properties and assign values on your parent class like i used "eventKey={item.id}".

<Panel header={`Collapsible Group Item`} bsClass='class-name' {...this.props}>
content here
</Panel>

回答2:

I found a solution that lets you use a component in a separate file.

I figured the problem must be to do with the Accordion not being able to pass some props down to the Panel because they go to the wrapping component instead, so I tried collecting all the props that weren't mine and passing them to the panel:

// make sure you have all your own props specified before ...props
// so that they can't mess up the panel.
const { body, ...props } = this.props

return(
  <Panel {...props}>
    {body}
  </Panel>
);

If you want to specify any props on the Panel, make sure they go after the collected props so that they take precedence over any defaults:

const { body, ...props } = this.props

return(
  <Panel {...props}
         bsStyle="info">
    {body}
  </Panel>
);

If you choose any props names the same as whatever Accordion is passing to Panel, you could clobber something and break it - if you're concerned, it should be straightforward to follow the code and see what is being passed on.

回答3:

react-bootstrap seems to complain if the children of an Accordion are not Panels, and by wrapping Panel inside of my Content class I was doing just that.

To solve this problem I had to step away from React's convention. Rather than creating a class Content, I created another js file rather than a react.js file. By treating this file like a normal js file, I was able to call on a function inside of this file which maps over each 'this.state.contents' and return a Panel object.

This whole file will return an array of Panel class.