55 lines
966 B
Ruby
55 lines
966 B
Ruby
# frozen_string_literal: true
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class Trends::PreviewCardFilter
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KEYS = %i(
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trending
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locale
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).freeze
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attr_reader :params
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def initialize(params)
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@params = params
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end
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def results
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scope = initial_scope
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params.each do |key, value|
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next if %w(page).include?(key.to_s)
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scope.merge!(scope_for(key, value.to_s.strip)) if value.present?
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end
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scope
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end
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private
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def initial_scope
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PreviewCard.select(PreviewCard.arel_table[Arel.star])
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.joins(:trend)
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.eager_load(:trend)
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.reorder(score: :desc)
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end
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def scope_for(key, value)
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case key.to_s
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when 'trending'
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trending_scope(value)
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when 'locale'
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PreviewCardTrend.where(language: value)
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else
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raise "Unknown filter: #{key}"
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end
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end
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def trending_scope(value)
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case value
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when 'allowed'
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PreviewCardTrend.allowed
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else
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PreviewCardTrend.all
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end
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end
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end
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