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 openid_logo
  56     image_tag "openid.svg", :size => "36", :alt => t("application.auth_providers.openid_logo_alt"), :class => "align-text-bottom"
  57   end
  58
  59   def auth_button(name, provider, options = {})
  60     link_to(
  61       image_tag("#{name}.svg",
  62                 :alt => t("application.auth_providers.#{name}.alt"),
  63                 :class => "rounded-1",
  64                 :size => "36"),
  65       auth_path(options.merge(:provider => provider)),
  66       :method => :post,
  67       :class => "auth_button btn btn-light p-2 d-block",
  68       :title => t("application.auth_providers.#{name}.title")
  69     )
  70   end
  71
  72   def auth_button_preferred(name, provider, options = {})
  73     link_to(
  74       image_tag("#{name}.svg",
  75                 :alt => t("application.auth_providers.#{name}.alt"),
  76                 :class => "rounded-1 me-3",
  77                 :size => "36") + t("application.auth_providers.#{name}.title"),
  78       auth_path(options.merge(:provider => provider)),
  79       :method => :post,
  80       :class => "auth_button btn btn-outline-secondary border py-2 px-4 d-flex justify-content-center align-items-center",
  81       :title => t("application.auth_providers.#{name}.title")
  82     )
  83   end
  84
  85   private
  86
  87   # Local avatar support
  88   def user_avatar_variant_tag(user, variant_options, options)
  89     if user.avatar.variable?
  90       variant = user.avatar.variant(variant_options)
  91       # https://stackoverflow.com/questions/61893089/get-metadata-of-active-storage-variant/67228171
  92       if variant.send(:processed?)
  93         metadata = variant.processed.send(:record).image.blob.metadata
  94         if metadata["width"]
  95           options[:width] = metadata["width"]
  96           options[:height] = metadata["height"]
  97         end
  98       end
  99       image_tag variant, options
 100     else
 101       image_tag user.avatar, options
 102     end
 103   end
 104
 105   def user_avatar_variant(user, options)
 106     if user.avatar.variable?
 107       user.avatar.variant(options)
 108     else
 109       user.avatar
 110     end
 111   end
 112
 113   # Gravatar support
 114
 115   # See http://en.gravatar.com/site/implement/images/ for details.
 116   def user_gravatar_url(user, options = {})
 117     size = options[:size] || 100
 118     hash = Digest::MD5.hexdigest(user.email.downcase)
 119     default_image_url = image_url("avatar_large.png")
 120     "#{request.protocol}www.gravatar.com/avatar/#{hash}.jpg?s=#{size}&d=#{u(default_image_url)}"
 121   end
 122
 123   def user_gravatar_tag(user, options = {})
 124     url = user_gravatar_url(user, options)
 125     options[:height] = options[:width] = options.delete(:size) || 100
 126     image_tag url, options
 127   end
 128 end