38 lines
1.1 KiB
Ruby
38 lines
1.1 KiB
Ruby
module OpenGraphHelper
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require "addressable/uri"
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def opengraph_tags(title = nil, og_image = nil, og_image_alt = nil)
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tags = {
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"og:site_name" => t("layouts.project_name.title"),
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"og:title" => title || t("layouts.project_name.title"),
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"og:type" => "website",
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"og:url" => url_for(:only_path => false),
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"og:description" => t("layouts.intro_text")
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}.merge(
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opengraph_image_properties(og_image, og_image_alt)
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)
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safe_join(tags.map do |property, content|
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tag.meta(:property => property, :content => content)
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end, "\n")
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end
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private
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def opengraph_image_properties(og_image, og_image_alt)
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begin
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if og_image
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properties = {}
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properties["og:image"] = Addressable::URI.join(root_url, og_image).normalize
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properties["og:image:alt"] = og_image_alt if og_image_alt
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return properties
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end
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rescue Addressable::URI::InvalidURIError
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# return default image
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end
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{
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"og:image" => image_url("osm_logo_256.png"),
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"og:image:alt" => t("layouts.logo.alt_text")
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}
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end
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end
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