Accessing $state inside a tree menu item click results in an error where this.$state is undefined

Question

Accessing $state inside a tree menu item click results in an error where this.$state is undefined

Currently utilizing "angular-ui-tree": "^2.22.5"

An issue arises when attempting to select the Do something menu option ..

TypeError: this.$state is undefined

Is there a way to provide a reference to $state in my function ..

MyController:

export class MyController {

  public treeMenuItems = [
    {
      'handleClick': this.doSomething,
      'name': 'Do something'
    }
  ];
  public treeMenuPopover = {
    'items': this.treeMenuItems,
    'placement': 'bottom',
    'title': 'Actions'
  };

  constructor(public $state: ng.ui.IStateService) {}

  public doSomething() {
    this.$state.go('my.state');
  }
}
MyController.$inject = ['$state'];

javascript angularjs

Answer 1

Answer №1

If you want to understand how this functions in JavaScript, check out this resource here.

Here's a snippet that demonstrates how to properly bind the correct context for the function:

export class MyController {

  public treeMenuItems = [
    {
      'handleClick': this.doSomething,
      'name': 'Do something'
    }
  ];
  public treeMenuPopover = {
    'items': this.treeMenuItems,
    'placement': 'bottom',
    'title': 'Actions'
  };

  constructor(public $state: ng.ui.IStateService) {
    this.doSomeThing = this.doSomething.bind(this);
  }

  doSomething() {
    this.$state.go('my.state');
  }
}
MyController.$inject = ['$state'];

This approach ensures that the function doSomething maintains the correct context every time it is called.

Answer 2

If you want to understand how this functions in JavaScript, check out this resource here.

Here's a snippet that demonstrates how to properly bind the correct context for the function:

export class MyController {

  public treeMenuItems = [
    {
      'handleClick': this.doSomething,
      'name': 'Do something'
    }
  ];
  public treeMenuPopover = {
    'items': this.treeMenuItems,
    'placement': 'bottom',
    'title': 'Actions'
  };

  constructor(public $state: ng.ui.IStateService) {
    this.doSomeThing = this.doSomething.bind(this);
  }

  doSomething() {
    this.$state.go('my.state');
  }
}
MyController.$inject = ['$state'];

This approach ensures that the function doSomething maintains the correct context every time it is called.

Accessing $state inside a tree menu item click results in an error where this.$state is undefined

Answer №1

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