zimt28
Using sigil_E inside of a macro
I’d like to use the ~E sigil inside of a macro. For some reason the assigns variable is not accessible:
defmacro __using__(_opts) do
quote do
use AppWeb, :view
def render("index.html", assigns) do
~E"""
<%= @test %>
"""
end
end
end
Result:
expected “assigns” to expand to an existing variable or be part of a match
Writing the render/2 function directly into a view works fine. Is there a way to make this work?
Thanks!
Marked As Solved
josevalim
Variables defined inside a macro that their own context, so they don’t conflict with user variables. You can force it to be the user variable by using var!:
def render("index.html", var!(assigns)) do
Also Liked
kip
I think you’ll have to set unquote: false to defer expansion. Therefore:
defmacro __using__(_opts) do
quote unquote: false do
use AppWeb, :view
def render("index.html", assigns) do
~E"""
<%= @test %>
"""
end
end
end
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