Cannot pass props to modal 'TypeError: Cannot read property of 'showEditModal' of undefined'

Firstly, I'd like to thank you for this component - it's extremely useful.

I have an issue: I am trying to create touchable list items that, when pressed, show a modal to view and edit information.

However, if I call the onPressEdit function and pass it props as an argument I receive error:
TypeError: Cannot read property of 'showEditModal' of undefined

But I can call onPressEdit without passing arguments and it correctly opens the modal. Am I missing something here please guys? Any help would be greatly appreciated.

At present I have:
Food.js - renders flat list
TrackedItem.js - returns each item in the list
EditModal.js

Food.js

  constructor(props) {
    super(props);
    this.state = {
    };
    this.onPressEdit = this.onPressEdit.bind(this);
  }

onPressEdit = name => {
  this.refs.editModal.showEditModal(name);
}
....
render() {
  return(
      <FlatList
              data={this.state.foods}
              renderItem={({ item }) =>
                <TrackedItem
                  {...item}
                  onPress={this.onPressEdit}
                />
              }
              keyExtractor={(item, index) => index.toString()}
          />
      <EditModal ref={'editModal'} parentFlatList={this} />
  )
}

TrackedItem.js

<ListItem
  title={this.props.name}
  onPress={this.props.onPress(this.props.name)}
/>

EditModal.js

showEditModal = name => {
  this.refs.editModal.open();
  this.setState({ name });
}

<Modal
  ref={'editModal'}
  position='top'
>

Start in TrackedItem.js and inspect how ListItem receives the onPress prop, then trace it back to Food.js and onPressEdit. Reproduce the error with the provided FlatList and modal setup; done means pressing an item passes its name without triggering the undefined-property error and opens EditModal as intended.