How to use Dynamic Placeholders

Question

This is my first time with Dynamic Placeholders and I am unable to find any related tutorial.

I have installed the nuget package mentioned in the Fortis Site
https://www.nuget.org/packages/DynamicPlaceholders.Mvc/
and trying to render a component as

@Html.Sitecore().DynamicPlaceholder("section")

The component does not render on page and there are no errors.

If I just say:

@Html.Sitecore().Placeholder("section")

it works fine.

Apart from installing the package, should anything else be done.

Using Sitecore 8.2 with MVC

EDIT

The Fortis way seems complex. So, I have deleted the Fortis dll references and installed the package from the Marketplace. When browsing the page in preview mode, the error is

Sitecore.Mvc.Helpers.SitecoreHelper' does not contain a definition for 'DynamicPlaceholder
and no extension method 'DynamicPlaceholder' accepting a first argument of    
type 'Sitecore.Mvc.Helpers.SitecoreHelper' could be found (are you missing 
a using directive or an assembly reference?)'

Answer 1

It sounds like you have added the component to a placeholder key called section - with dynamic placeholders there will be an extra bit of data appended to that. Depending on the version of dynamic placeholders you have installed, that data changes.

If you have installed the Fortis Dynamic Placeholders - this appends the guid of the unique rendering Id to the place holder, so your placeholder key would be something like section-21ec20203aea1069a2dd08002b30309d - the best way to use this is to add components via the Experience Editor, that way the key is automatically worked out by Sitecore.

If you have the the version from the Sitecore Market Place - this uses numbers appended to the key. So the first section would just be called section, any subsequent placeholders using he same key would be section_2, section_3 etc...

Your component is being hidden because with the dynamic placeholder, the key of section on its own does not exist.

Update: How to add via the Content Editor For the Fortis implementation, to add renderings via the content editor requires you to go into the raw values of the __Renderings or __Final Renderings fields. In there will be the Xml that defines the layout. Find the rendering that contains your dynamic placeholder and then in the xml look for the uid of that rendering, that is the Guid that is appended.

<r id="{C4BD2E61-3025-4F88-9F7D-677086C576BA}" ph="header" uid="{8ED804CF-8F60-452C-A88B-4EEEB0145793}" />

Now when you add a rendering, append that guid to the placeholder key.

An alternative would be to add a rendering via the experience editor and then look at the placeholder key for that rendering, copy that and use it when adding more renderings.