sreyansjain

sreyansjain

Can LiveView push_event send only the latest event

Thanks to the awesome community we have here.

I have created a VueJs component using phx-hook. I have also used phx-update=“ignore” on the same component. The idea is to handle the user interaction using vuejs and exchange data using liveview. It works fine but there is an important issue.
When i am initialising the component in the update method of the live_component i do this

    {:ok,
     push_event(socket, "table_data_init", %{
       columns: cols,
       rows: rs,
       data: data,
       block_id: block_id,
       members: socket.assigns.members,
       doc_members: socket.assigns.doc_members
     })}

In the hook I am listening to these events like so -

    this.handleEvent("table_data_init", (data) => {
      console.log(data.block_id)
      vue_table['b' + data.block_id].data = data
    })
    this.handleEvent("table_data_updated", (payload) => {
      let new_data = payload.data
      let data = vue_table['b' + new_data.block_id].data
      if (data.rows){
        data.rows = data.rows.map((r) => {
          if(r.id == new_data.row_id){
            r.modified_by = new_data.user_id
          }
          return r
        })

        let dp = data.data.filter((d) => d.table_column_id == new_data.col_id && d.table_row_id == new_data.row_id)
        if(dp.length == 1){
          data.data = data.data.map((d) => {
            if(d.table_column_id == new_data.col_id && d.table_row_id == new_data.row_id){
              d.value = new_data.value
            }
            return d
          })
        }else{
          let d = {
            table_column_id: new_data.col_id,
            table_row_id: new_data.row_id,
            value: new_data.value
          }
          let x = [...data.data, d]
          data.data = x
        }
      }
    })
    this.handleEvent("table_columns_updated", ({columns, block_id}) => {
      vue_table['b' + block_id].data.columns = columns;
    })
    this.handleEvent("table_column_deleted", ({columns, data, block_id}) => {
      vue_table['b' + block_id].data.columns = columns;
      vue_table['b' + block_id].data.data = data;
    })
    this.handleEvent("new_table_row_added", ({rows, block_id}) => {
      console.log("***********************************************")
      vue_table['b' + block_id].data.rows = rows;
      vue_table['b' + block_id].current_page = vue_table['b' + block_id].total_pages 
    })

Now the problem is when I make first request to liveview from the vuejs component using the hook -

this.pushEventTo(target, "event_name", {data: data})

I get a response from liveview which has 2 event calls, the table_data_init and the new one table_data_updated.

If i send another event from the vuejs component, I get reply from liveview which has 3 events. Like so -

This keeps repeating. So for 10th event I get a reply with 11 events and so on.

Can I prevent this? Can we make live_view send only the latest event and not all the events during the editing session?

Any help would be deeply appreciated.
Thanks to the community once again.

Marked As Solved

josevalim

josevalim

Creator of Elixir

Fixed in master!

Also Liked

josevalim

josevalim

Creator of Elixir

It is a bug. I found the root cause looking at the code, I will push a fix soon.

Where Next?

Popular in Questions Top

chokchit
** (DBConnection.ConnectionError) connection not available and request was dropped from queue after 2733ms. You can configure how long re...
New
_russellb
I want to try my hand at web scraping. What tools/libraries do I need to use. I’m hoping to turn this into something professional so don’...
New
New
Harrisonl
We have an ECS cluster with 4 services, where each task joins a single cluster, via discovery ECS discovery service. Currently when I de...
New
electic
Hi, I am new to Elixir. I am trying to use the DateTime component to insert a date into MySQL however the there seems to be no way to fo...
New
ovidiubadita
Hey all, I discovered Elixir and I love it. I always wanted to learn a functional programming and I intended to go for Haskell, but afte...
New
LegitStack
I’m trying to make a websocket server in Phoenix or raw Elixir. I heard about gun, I think I could use cowboy, but since I’m not that sma...
New
ycv005
I have followed this StackOverflow post to install the specific version of Erlang. And When I am running mix ecto.setup then getting fol...
New
SoCreat
i’m a new one to elixir which editor can i use vs code? or atom? Thanks! :smiley:
New
nobody
Hi! In PHP: $_SERVER[‘SERVER_ADDR’] - in Elixir? Searched the docs for ip address and the web, no good results. Thanks!
New

Other popular topics Top

marius95
Hello everyone, I try to use an Javascript Event Handler in my root.html.leex file. Therefore I created a function in the app.js file: ...
New
mcarvalho
What is the difference between System.get_env and Application.get_env? For example, what are best practices to use one versus another.
New
skosch
To my knowledge, put_in, Map.update etc. all have the one limitation of not automatically creating intermediate keys when needed (for exa...
New
Patoshizzle
After calling mix ecto.create I get this error: 17:00:32.162 [error] GenServer #PID<0.412.0> terminating ** (Postgrex.Error) FATAL...
New
shahryarjb
Hello, I have map which I want to convert it to string like this: the map: %{last_name: "tavakkoli", name: "shahryar"} the string I ne...
New
saif
Hello everyone, Long time lurker first time poster here. I’ve recently begun working on Elixir full-time again! :raised_hands: It’s been...
New
shijith.k
I am trying to start a new phoenix project with elixir 1.9, but mix phx.new does not work. It says that ** (Mix) The task "phx.new" could...
New
joaquinalcerro
Hi there, I am working with Ecto-Postgresql and I need to call all of the records from a specific table but the table has 40,000 records...
New
JorisKok
I have a server on AWS, and was running a load test using artillery. When looking at the Phoenix dashboard I see the Ports going to 100% ...
New
jononomo
For some reason my phoenix channels are working for me in my local dev environment, but as soon as I deploy via Docker, I get a 403 error...
New

We're in Beta

About us Mission Statement