OK, I will do smaller release than I planned especially for you 
Anyway, it will contain P13 fix.
grych
Creator of Drab
OvermindDL1
thib
Thanks for your both answers !
Then I will keep some templates with plain html, thats ok (still I think that would be great to manage Haml ! 
I didn’t get at first Drab’s ability to call functions directly from js ; that’s cool !
My plan is to place some assigns in an html template, play with it with js, then push some changes to repo and load fresh new assign in the template (without reloading the whole page). I like Drab’s approach to avoid Ajax, and tried to use put_store and storage location on load. My point is I can’t find how to make that work :
- My commander doesn’t look to see my controller’s assigns (storage location remains empty)
- I manage to query Ecto directly from the commander, but get an “Assign not found in Drab EEx template” (and i am not sure that querying Ecto should be done by Drab…)
Any suggestion ?
Txs !
thib
Here it is (I simplified a bit) :
My membership’s controller has a test method :
def test(conn, _params) do
memberships =
query_user(conn, _params)
|> Repo.all
conn
|> assign(:memberships, memberships)
|> render "test.html"
end
The membership’s commander :
def page_loaded(socket) do
initial = peek(socket, :memberships) # Load assign
put_store(socket, :memberships, initial) # Store assign in localStorage
current = get_store(socket, :memberships) # Retrieve assign from localStorage
IO.inspect(current)
end
I do not render the @memberships in the template, but use some js afterward to check localStorage content. Still no magic as I keep getting an empty localStorage and a :
Assign @memberships not found in Drab EEx template
Does it mean the assign must be rendered ? Where am I wrong ?
Txs
grych
Creator of Drab
Store (and session) is the different entity than assigns.
With Drab, you use assigns normally, while rendering template from the controller. Then, you may poke and peek assigns live, from the commander.
All is explain on the demo/tutorial page, here Drab: Server Side User Interface Access
thib
Ok, I realized I misunderstood when to use Drab (I was thinking Drab’s store is accessible from js thanks to localStorage By default, Drab Store is kept in browser Local Storage. , but cant find how).
I turned tmyself to PhoenixGon to load assigns in js, then I will use Drab to trigger updates in my templates.
Thanks again for your help
grych
Creator of Drab
Drab Store is kept in the local store, or memory (as configured) and it is available only from Drab. Well, in theory you could decrypt it in JS (values are signed with Phoenix.Token), but the intention is to keep all the code on the server side.
ryanswapp
@grych Drab is a really cool library! Thanks for making it. Lately I’ve been feeling like building SPA’s presents a lot of unnecessary complexity for so little extra benefit. Your library can fill the gap.
I haven’t dug too deeply into Drab (looked through the README and hexdocs) but have a question. I sometimes use Postgres listen/notify to get real time updates when data changes. I’ve used the Boltun library to manage listen/notify callbacks and am wondering if it is possible to trigger a commander function from another module on the server (e.g. from my Boltun callback). I’d like to update a table of records on all connected clients via drab when the database is changed. Sorry if this is documented somewhere and I missed it 
grych
Creator of Drab
You just need to broadcast the update to all connected browsers. You can do it from any part of your application, as broadcasting functions do not need a socket to send the updates.
You may use Drab.Element.broadcast_prop or the similar function from Drab.Query or even simple Drab.Core.broadcast_js
See
for the broadcasting options.
BTW docs about broadcasting should be updated, not easy to find it.
BTW2 do you think I should make a broadcast versions of Drab.Element.set_attr, set_style etc? For now there is only broadcasting version of set_prop.