Gladear
Clarification about `assign/2,3` usage in `render/1` callbacks
I think I remember reading somewhere that calling `assign/2,3` in the `render/1` callback of a LiveView or a LiveComponent is bad practice, but I don’t recall where, nor why.
Here’s an example, for sake of clarity:
def render(assigns) do
assigns = assign(assigns, :new_assign, assign.a1 + assigns.a2)
~H"""
{@new_assign}
"""
end
Is this pattern safe? If not, why not? Is this documented somewhere in LiveView’s documentation?
Thanks in advance
Marked As Solved
LostKobrakai
This is fine, besides the fact that it runs each time render/1 is called. So do not put expensive calculations there, but otherwise this is no different to doing the same in any downstream function components.
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