Sidenav does not collapse


Topic: Sidenav does not collapse

MIGU pro premium asked a year ago

The collapse list doesn`t gets created with nfgor?The grouplist gets created but the types list not

Sidenav does not create the collapse menu - collapse does not work

Please help me to get the two collapse menu

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Grzegorz Bujański staff commented a year ago

It looks like types return an empty element. Have you checked what the types object returns?


MIGU pro premium commented a year ago

Thank you for your answer. types$ got data... An if I change the class="sidenav-collapse" to class="sidenav-menu" all the data is shown without animations (js i think)...


Grzegorz Bujański staff answered a year ago

Sidenav is initialized right after the js code loads. I suppose in your case the js code is loaded first, and then Sidenav is added.

You can check it easily. Just check what returns mdb.Sidenav.getInstance (document.getElementById ('sidenav'));. If it returns undefined, Sidenav has not been initialized.

The safest thing to do is to check if there is an instance of sidenav and add it if necessary. Try adding such code in the AfterViewInit hook:

let instance = mdb.Sidenav.getInstance(this._elementRef.nativeElement;);

if (!instance) {
    instance = new mdb.Sidenav(this._elementRef.nativeElement;);
}

Please insert min. 20 characters.

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Status

Answered

Specification of the issue
  • User: Pro
  • Premium support: Yes
  • Technology: MDB Standard
  • MDB Version: 3.0.0
  • Device: Angular
  • Browser: Microsoft Edge
  • OS: Windows 10 pro
  • Provided sample code: No
  • Provided link: No
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