Angular2 - No provider for TemplateRef (ng2-bootstrap)

Question

I have been trying several solutios for this error, but didn't find any succesful way to overcome this: No provider for TemplateRef!

Error log:

EXCEPTION: Uncaught (in promise): Error: Error in ./FooterComponent class FooterComponent - inline template:15:20 caused by: No provider for TemplateRef! Error: Error in ./FooterComponent class FooterComponent - inline template:15:20 caused by: No provider for TemplateRef!

Unhandled Promise rejection: Error in ./FooterComponent class FooterComponent - inline template:15:20 caused by: No provider for TemplateRef! ; Zone: angular ; Task: Promise.then ; Value:

footer.component.ts

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'sa-footer',
  templateUrl: './footer.component.html'
})
export class FooterComponent implements OnInit {

  constructor() {}

  ngOnInit() {}

}

footer.component.html

<div class="page-footer">
    <div class="row">
        <div class="col-xs-12 col-sm-6">
            <span class="txt-color-white">myAPP © 2016</span>
        </div>

        <div class="col-xs-6 col-sm-6 text-right hidden-xs">
            <div class="txt-color-white inline-block">
                <i class="txt-color-blueLight hidden-mobile">Last account activity <i class="fa fa-clock-o"></i>
                    <strong>52 mins ago &nbsp;</strong> </i>

                <div class="btn-group dropup" dropdown>
                    <button class="btn btn-xs dropdown-toggle bg-color-blue txt-color-white" dropdownToggle>
                        <i class="fa fa-link"></i> <span class="caret"></span>
                    </button>
                    <ul class="dropdown-menu pull-right text-left" dropdownMenu>
                        <li>
                            <div class="padding-5">
                                <p class="txt-color-darken font-sm no-margin">Download Progress</p>

                                <div class="progress progress-micro no-margin">
                                    <div class="progress-bar progress-bar-success" style="width: 50%;"></div>
                                </div>
                            </div>
                        </li>
                        <li class="divider"></li>
                        <li>
                            <div class="padding-5">
                                <p class="txt-color-darken font-sm no-margin">Server Load</p>

                                <div class="progress progress-micro no-margin">
                                    <div class="progress-bar progress-bar-success" style="width: 20%;"></div>
                                </div>
                            </div>
                        </li>
                        <li class="divider"></li>
                        <li>
                            <div class="padding-5">
                                <p class="txt-color-darken font-sm no-margin">Memory Load <span class="text-danger">*critical*</span>
                                </p>

                                <div class="progress progress-micro no-margin">
                                    <div class="progress-bar progress-bar-danger" style="width: 70%;"></div>
                                </div>
                            </div>
                        </li>
                        <li class="divider"></li>
                        <li>
                            <div class="padding-5">
                                <button class="btn btn-block btn-default">refresh</button>
                            </div>
                        </li>
                    </ul>
                </div>
            </div>
        </div>
    </div>
</div>

I tried to do the following:

1. Research: But only found answers / solutions for templates that actually contain some directives like ngIf, ngSwitch, etc. (Forgetting the *, for example)

2. Add TemplateRef to providers. This is what I get:

Argument of type '{ selector: string; templateUrl: string; providers: typeof TemplateRef[]; }' is not assignable to parameter of type 'Component'. Types of property 'providers' are incompatible. Type 'typeof TemplateRef[]' is not assignable to type 'Provider[]'. Type 'typeof TemplateRef' is not assignable to type 'Provider'. Type 'typeof TemplateRef' is not assignable to type 'FactoryProvider'. Property 'provide' is missing in type 'typeof TemplateRef'.

I will try to see how to add somehow TemplateRef to the app's module providers. But I don't know if this is the solution. I hope someone comes out with a solution while I continue researching.

Thank you! :D

Answer 1

Research: But only found answers / solutions for templates that actually contain some directives like ngIf, ngSwitch, etc. (Forgetting the *, for example)

missing * here :

<ul class="dropdown-menu pull-right text-left" dropdownMenu>

should be

<ul class="dropdown-menu pull-right text-left" *dropdownMenu>

From ng2-bootstrap:

<div class="btn-group" dropdown>
  <button dropdownToggle type="button" class="btn btn-primary dropdown-toggle">
    Button dropdown <span class="caret"></span>
  </button>
  <ul *dropdownMenu class="dropdown-menu" role="menu">
    <li role="menuitem"><a class="dropdown-item" href="#">Action</a></li>
    <li role="menuitem"><a class="dropdown-item" href="#">Another action</a></li>
    <li role="menuitem"><a class="dropdown-item" href="#">Something else here</a></li>
    <li class="divider dropdown-divider"></li>
    <li role="menuitem"><a class="dropdown-item" href="#">Separated link</a>
    </li>
  </ul>
</div>