53 lines
1.5 KiB
Elixir
53 lines
1.5 KiB
Elixir
defmodule MobilizonWeb.Uploaders.Category do
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@moduledoc """
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Handles file uploads for categories
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"""
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use Arc.Definition
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use Arc.Ecto.Definition
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# To add a thumbnail version:
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@versions [:original, :thumb]
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@extension_whitelist ~w(.jpg .jpeg .gif .png)
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# Override the bucket on a per definition basis:
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# def bucket do
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# :custom_bucket_name
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# end
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# Whitelist file extensions:
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def validate({file, _}) do
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file_extension = file.file_name |> Path.extname() |> String.downcase()
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Enum.member?(@extension_whitelist, file_extension)
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end
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# Define a thumbnail transformation:
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def transform(:thumb, _) do
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{:convert, "-strip -thumbnail 250x250^ -gravity center -extent 250x250 -format png", :png}
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end
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# Override the persisted filenames:
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def filename(version, {_file, %{title: title}}) do
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"#{title}_#{version}"
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end
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# TODO : When we're sure creating a category is secured and made possible only for admins, use category name
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# Override the storage directory:
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def storage_dir(_, _) do
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"uploads/categories/"
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end
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# Provide a default URL if there hasn't been a file uploaded
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# def default_url(version, scope) do
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# "/images/avatars/default_#{version}.png"
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# end
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# Specify custom headers for s3 objects
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# Available options are [:cache_control, :content_disposition,
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# :content_encoding, :content_length, :content_type,
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# :expect, :expires, :storage_class, :website_redirect_location]
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#
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# def s3_object_headers(version, {file, scope}) do
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# [content_type: MIME.from_path(file.file_name)]
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# end
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end
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