phoenix-thinking
Phoenix Thinking
Mental shifts for Phoenix applications. These insights challenge typical web framework patterns.
The Iron Law
NO DATABASE QUERIES IN MOUNT
mount/3 is called TWICE (HTTP request + WebSocket connection). Queries in mount = duplicate queries.
def mount(_params, _session, socket) do
# NO database queries here! Called twice.
{:ok, assign(socket, posts: [], loading: true)}
end
def handle_params(params, _uri, socket) do
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