app/helpers/user_helper.rb

   1 module UserHelper
   2   # User images
   3
   4   def user_image(user, options = {})
   5     options[:class] ||= "user_image border border-secondary-subtle bg-body"
   6     options[:alt] ||= ""
   7
   8     if user.image_use_gravatar
   9       user_gravatar_tag(user, options)
  10     elsif user.avatar.attached?
  11       user_avatar_variant_tag(user, { :resize_to_limit => [100, 100] }, options)
  12     else
  13       image_tag "avatar.svg", options.merge(:width => 100, :height => 100)
  14     end
  15   end
  16
  17   def user_thumbnail(user, options = {})
  18     options[:class] ||= "user_thumbnail border border-secondary-subtle bg-body"
  19     options[:alt] ||= ""
  20
  21     if user.image_use_gravatar
  22       user_gravatar_tag(user, options.merge(:size => 50))
  23     elsif user.avatar.attached?
  24       user_avatar_variant_tag(user, { :resize_to_limit => [50, 50] }, options)
  25     else
  26       image_tag "avatar.svg", options.merge(:width => 50, :height => 50)
  27     end
  28   end
  29
  30   def user_thumbnail_tiny(user, options = {})
  31     options[:class] ||= "user_thumbnail_tiny border border-secondary-subtle bg-body"
  32     options[:alt] ||= ""
  33
  34     if user.image_use_gravatar
  35       user_gravatar_tag(user, options.merge(:size => 50))
  36     elsif user.avatar.attached?
  37       user_avatar_variant_tag(user, { :resize_to_limit => [50, 50] }, options)
  38     else
  39       image_tag "avatar.svg", options.merge(:width => 50, :height => 50)
  40     end
  41   end
  42
  43   def user_image_url(user, options = {})
  44     if user.image_use_gravatar
  45       user_gravatar_url(user, options)
  46     elsif user.avatar.attached?
  47       polymorphic_url(user_avatar_variant(user, :resize_to_limit => [100, 100]), :host => Settings.server_url)
  48     else
  49       image_url("avatar.svg")
  50     end
  51   end
  52
  53   # External authentication support
  54
  55   def auth_button(provider, options = {})
  56     link_to(
  57       image_tag("auth_providers/#{provider}.svg",
  58                 :alt => t("application.auth_providers.#{provider}.alt"),
  59                 :class => "rounded-1",
  60                 :size => "36"),
  61       auth_path(options.merge(:provider => provider)),
  62       :method => :post,
  63       :class => "auth_button btn btn-light p-2",
  64       :title => t("application.auth_providers.#{provider}.title")
  65     )
  66   end
  67
  68   def auth_button_preferred(provider, options = {})
  69     link_to(
  70       image_tag("auth_providers/#{provider}.svg",
  71                 :alt => t("application.auth_providers.#{provider}.alt"),
  72                 :class => "rounded-1 me-3",
  73                 :size => "36") + t("application.auth_providers.#{provider}.title"),
  74       auth_path(options.merge(:provider => provider)),
  75       :method => :post,
  76       :class => "auth_button btn btn-outline-secondary border py-2 px-4 d-flex justify-content-center align-items-center",
  77       :title => t("application.auth_providers.#{provider}.title")
  78     )
  79   end
  80
  81   private
  82
  83   # Local avatar support
  84   def user_avatar_variant_tag(user, variant_options, options)
  85     if user.avatar.variable?
  86       variant = user.avatar.variant(variant_options)
  87       # https://stackoverflow.com/questions/61893089/get-metadata-of-active-storage-variant/67228171
  88       if variant.send(:processed?)
  89         metadata = variant.processed.send(:record).image.blob.metadata
  90         if metadata["width"]
  91           options[:width] = metadata["width"]
  92           options[:height] = metadata["height"]
  93         end
  94       end
  95       image_tag variant, options
  96     else
  97       image_tag user.avatar, options
  98     end
  99   end
 100
 101   def user_avatar_variant(user, options)
 102     if user.avatar.variable?
 103       user.avatar.variant(options)
 104     else
 105       user.avatar
 106     end
 107   end
 108
 109   # Gravatar support
 110
 111   # See http://en.gravatar.com/site/implement/images/ for details.
 112   def user_gravatar_url(user, options = {})
 113     size = options[:size] || 100
 114     hash = Digest::MD5.hexdigest(user.email.downcase)
 115     default_image_url = image_url("avatar_large.png")
 116     "#{request.protocol}www.gravatar.com/avatar/#{hash}.jpg?s=#{size}&d=#{u(default_image_url)}"
 117   end
 118
 119   def user_gravatar_tag(user, options = {})
 120     url = user_gravatar_url(user, options)
 121     options[:height] = options[:width] = options.delete(:size) || 100
 122     image_tag url, options
 123   end
 124 end