Cannot render nested anonymous objects returned from custom filter

[arthurmmedeiros]

Hello there,

First of all I would like to thank for all the work that has been done in this library. I've been using it for a while, and it has been really useful in some of my projects.

Problem:
I am currently facing a problem with trying to write custom filter. I wanted to implement a custom filter that performs a group by and returns a list of grouped objects. I got it sort of working, the problem is that I cannot get it to access the nested objects inside the grouped lists. I can for instance access they key value of the objects, but the list of items seems to be ignored

To illustrate the problem, I have a template that looks like this
"<h1>Hello</h1><div> {% assign events_by_type = events | group_by: \"eventTypeId\" %} {% for type_group in events_by_type %} <div> {{type_group.key}} {% for item in type_group.items %} {{ item.name }} {{item}} {% endfor %} </div> {% endfor %} </div>"

and I am using a json object that looks like this:
"{\"events\":[{\"eventTypeId\":1234,\"type\":{\"id\":1234,\"name\":\"type 1234\"}}, {\"eventTypeId\": 1111, \"type\":{\"id\":1111,\"name\":\"type 1111\"} }]}"

This is the result I get
<h1>Hello</h1><div> <div> 1234 </div> <div> 1111 </div> </div>

This is what I was expecting
<h1>Hello</h1><div> <div> 1234 type 1234 </div> <div> 1111 type 1111 </div> </div>
anonymous objects
I have a json object containing all the data I want to render. The catch with this json object is that I cannot register my classes as instructed here. I want it to be generic as possible so I can work with any json object.

For this to happen I thought all I needed to do was to use UnsafeMemberAccessStrategy, but it does not seem to be the case.

Here is a simple repro https://dotnetfiddle.net/r0hkwE

I want to be able to do group by using metadata and by simple properties as well, hence why I do ToStringValue().Split(".").

I don't believe this is an issue with the custom filter itself since I can access the key values inside the list of objects. I cannot access the list of items inside the objects though.

I'm not sure if this could be a bug or if it's me.

[arthurmmedeiros]

I realised my code was all wrong. Adde this PR with the feature.