Specify avatar dimensions in html tags

[rails.git] / app / helpers / user_helper.rb

diff --git a/app/helpers/user_helper.rb b/app/helpers/user_helper.rb
index 8686d5a035c80751081aad9d3f3c1a1b89b2d037..eed55cd9d9a722d00a56dea6a7ee5073a582430a 100644 (file)
--- a/app/helpers/user_helper.rb
+++ b/app/helpers/user_helper.rb
@@ -1,16 +1,112 @@
 module UserHelper
+  # User images
+
+  def user_image(user, options = {})
+    options[:class] ||= "user_image"
+    options[:alt] ||= ""
+
+    if user.image_use_gravatar
+      user_gravatar_tag(user, options)
+    elsif user.avatar.attached?
+      user_avatar_variant_tag(user, { :resize_to_limit => [100, 100] }, options)
+    else
+      image_tag "avatar_large.png", options.merge(:width => 100, :height => 100)
+    end
+  end
+
+  def user_thumbnail(user, options = {})
+    options[:class] ||= "user_thumbnail"
+    options[:alt] ||= ""
+
+    if user.image_use_gravatar
+      user_gravatar_tag(user, options.merge(:size => 50))
+    elsif user.avatar.attached?
+      user_avatar_variant_tag(user, { :resize_to_limit => [50, 50] }, options)
+    else
+      image_tag "avatar_small.png", options.merge(:width => 50, :height => 50)
+    end
+  end
+
+  def user_thumbnail_tiny(user, options = {})
+    options[:class] ||= "user_thumbnail_tiny"
+    options[:alt] ||= ""
+
+    if user.image_use_gravatar
+      user_gravatar_tag(user, options.merge(:size => 50))
+    elsif user.avatar.attached?
+      user_avatar_variant_tag(user, { :resize_to_limit => [50, 50] }, options)
+    else
+      image_tag "avatar_small.png", options.merge(:width => 50, :height => 50)
+    end
+  end
+
+  def user_image_url(user, options = {})
+    if user.image_use_gravatar
+      user_gravatar_url(user, options)
+    elsif user.avatar.attached?
+      polymorphic_url(user_avatar_variant(user, :resize_to_limit => [100, 100]), :host => Settings.server_url)
+    else
+      image_url("avatar_large.png")
+    end
+  end
+
+  # External authentication support
+
   def openid_logo
-    image_tag "openid_small.png", :alt => t('user.login.openid_logo_alt'), :class => "openid_logo"
+    image_tag "openid_small.png", :alt => t("sessions.new.openid_logo_alt"), :class => "openid_logo"
+  end
+
+  def auth_button(name, provider, options = {})
+    link_to(
+      image_tag("#{name}.svg", :alt => t("sessions.new.auth_providers.#{name}.alt"), :class => "rounded-lg"),
+      auth_path(options.merge(:provider => provider)),
+      :method => :post,
+      :class => "auth_button",
+      :title => t("sessions.new.auth_providers.#{name}.title")
+    )
+  end
+
+  private
+
+  # Local avatar support
+  def user_avatar_variant_tag(user, variant_options, options)
+    if user.avatar.variable?
+      variant = user.avatar.variant(variant_options)
+      # https://stackoverflow.com/questions/61893089/get-metadata-of-active-storage-variant/67228171
+      if variant.processed?
+        metadata = variant.processed.send(:record).image.blob.metadata
+        if metadata["width"]
+          options[:width] = metadata["width"]
+          options[:height] = metadata["height"]
+        end
+      end
+      image_tag variant, options
+    else
+      image_tag user.avatar, options
+    end
   end
 
-  def openid_button(name, url)
-    link_to_function(
-      image_tag("#{name}.png", :alt => t("user.login.openid_providers.#{name}.alt")),
-      nil,
-      :title => t("user.login.openid_providers.#{name}.title")
-    ) do |page|
-      page[:login_form][:openid_url][:value] = url
-      page[:login_form].submit()
+  def user_avatar_variant(user, options)
+    if user.avatar.variable?
+      user.avatar.variant(options)
+    else
+      user.avatar
     end
   end
+
+  # Gravatar support
+
+  # See http://en.gravatar.com/site/implement/images/ for details.
+  def user_gravatar_url(user, options = {})
+    size = options[:size] || 100
+    hash = Digest::MD5.hexdigest(user.email.downcase)
+    default_image_url = image_url("avatar_large.png")
+    "#{request.protocol}www.gravatar.com/avatar/#{hash}.jpg?s=#{size}&d=#{u(default_image_url)}"
+  end
+
+  def user_gravatar_tag(user, options = {})
+    url = user_gravatar_url(user, options)
+    options[:height] = options[:width] = options.delete(:size) || 100
+    image_tag url, options
+  end
 end