blazejcm
Hi everyone!
I have a list of items that I display in Phoenix LiveView using streams.
Currently, I am working on the “Clone” feature. any item can be cloned and the new (cloned) item is supposed to appear right below the item being cloned.
I want to use stream_insert(..., at: position) but for this to work, I need to know the relative position of every item on the list.
I tried a few variations of the following in my view:
:for={ {{dom_id, entry}, position} <- Enum.with_index(@streams.entries) }
but I get the following error:
streams can only be consumed directly by a for comprehension. If you are attempting to consume the stream ahead of time, such as with
Enum.with_index(@streams.entries), you need to place the relevant information within the stream items instead.
I have no idea how to proceed in a way that would be idiomatic. I am sure I can hack my way out of this - but there’s got to be “the right way” to do it…
Thanks in advance!
Where Next?
Trending in Questions
Other Trending Topics
Latest Phoenix Threads
Latest on Elixir Forum
Sponsor Spotlight
Supporting innovation across the BEAM ecosystem.
Categories:
Sub Categories:
Forums
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #library
- #deployment
- #erlang
- #testing
- #genserver
- #mix
- #absinthe
- #remote-other
- #otp
- #plug
- #how-to-question
- #macros
- #postgres
- #elixirconf
- #channels
- #exunit
- #discussion
- #code-sync
- #podcasts
- #javascript
- #onsite
- #dialyzer
- #docker
- #authentication
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #ai
- #ecto-query
- #elixirconf-us
- #blog-post
- #elixir-ls
- #phoenix_html
- #iex
- #graphql
- #genstage
- #websockets
- #supervisor
- #advent-of-code
- #distillery
- #processes
- #elixirconf-eu
- #api
- #forms
- #metaprogramming
- #hex
Our Sponsors
Build Elixir applications with speed and confidence.
Supporting innovation across the BEAM ecosystem.
We build reliable cloud platforms for business-critical systems.
Catch errors, track performance, monitor hosts and more.
Error tracking, logs, uptime, and Just Enough APM. Built for developers.
Practical resources that improve the lives of professional developers.
Master modern tools, write cleaner code, and tackle real-world challenges.
Bringing learning, work and compliance together since 1987.
The team behind Membrane, Popcorn, LiveDebugger. Available for hire.
Courses that'll move you from confusion to "Aha, now I get it!"
Showing Posts 1 to 5- Show Best Posts
- Show All (oldest first)
- Show All (newest first)
Hermanverschooten
The only way I have found to do this, is to “enrich” your item with it’s index.
You cannot just use
Enum.with_index/1becausestreamrequires your item to be aMapwith an:id.mudasobwa
I must be missing something, but would not
Stream.with_index/2do?Hermanverschooten
We are talking about a
Phoenix.LiveViewstream, notElixir.Stream.Confusing that they chose the same term.
blazejcm
Thanks for clarifying!
I can’t “enrich” the item because of sorting and filtering options in my view. The items may be displayed in a different order every time.
I will have to live with the cloned items appearing at the bottom of the view.
All the best,
Michal
blazejcm
But I was thinking… I’ll try accessing the items in my stream in
handle_event, finding the right item and figuring out its index. Maybe it will work.Cheers!