docbrown/app/controllers/social_previews_controller.rb
Daniel Uber 2fbfd68172
Render social previews for tags with one of the two custom colors set (#16557)
* Initialize compare hex once in controller, fallback if color missing

This PR adds a fallback color choice when there are missing
bg_color_hex or text_color_hex (this is likely going to become more
common as we only show the bg_color_hex in the form).

The choices (black and white) may not be correct - this "custom, or
default" value choice should likely be made in a decorator or on the
model instead.

Addresses an error reported in
https://app.honeybadger.io/projects/66984/faults/83671065

* typo: Attribute name is text_color_hex
2022-02-15 09:56:57 -06:00

69 lines
2 KiB
Ruby

class SocialPreviewsController < ApplicationController
# No authorization required for entirely public controller
PNG_CSS = "body { transform: scale(0.3); } .preview-div-wrapper { overflow: unset; margin: 5vw; }".freeze
def article
@article = Article.find(params[:id])
@tag_badges = Badge.where(id: Tag.where(name: @article.decorate.cached_tag_list_array).select(:badge_id))
not_found unless @article.published
template = @article.tags
.where.not(social_preview_template: nil)
.where.not(social_preview_template: "article")
.select(:social_preview_template).first&.social_preview_template
# make sure that the template exists
template = "article" unless Tag.social_preview_templates.include?(template)
set_respond "social_previews/articles/#{template}"
end
def user
@user = User.find(params[:id])
@tag_badges = Badge.where(id: @user.badge_achievements.select(:badge_id))
set_respond
end
def listing
@listing = Listing.find(params[:id]).decorate
set_respond
end
def organization
@user = Organization.find(params[:id])
@tag_badges = [] # Orgs don't have badges, but they could!
set_respond "user"
end
def tag
@tag = Tag.find(params[:id])
@compare_hex = Color::CompareHex.new([@tag.bg_color_hex || "#000000", @tag.text_color_hex || "#ffffff"])
set_respond
end
def comment
@comment = Comment.find(params[:id])
badge_ids = Tag.where(name: @comment.commentable&.decorate&.cached_tag_list_array).pluck(:badge_id)
@tag_badges = Badge.where(id: badge_ids)
set_respond
end
private
def set_respond(template = nil)
respond_to do |format|
format.html do
render template, layout: false
end
format.png do
html = render_to_string(template, formats: :html, layout: false)
redirect_to HtmlCssToImage.fetch_url(html: html, css: PNG_CSS,
google_fonts: I18n.t("social_previews_controller.fonts")), status: :found
end
end
end
end