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Allow random selection for ProxyExercise

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This commit is contained in:
Sebastian Serth
2023-01-20 20:56:20 +01:00
parent d05d69756d
commit 2679f5fa56
9 changed files with 45 additions and 10 deletions
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30
app/models/proxy_exercise.rb
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@ -4,6 +4,11 @@ class ProxyExercise < ApplicationRecord
include Creation
include DefaultValues
enum algorithm: {
best_match: 0,
random: 1,
}, _default: :write, _prefix: true
after_initialize :generate_token
after_initialize :set_reason
after_initialize :set_default_values
@ -47,16 +52,25 @@ class ProxyExercise < ApplicationRecord
Rails.logger.debug { "retrieved assigned exercise for user #{user.id}: Exercise #{assigned_user_proxy_exercise.exercise}" }
assigned_user_proxy_exercise.exercise
else
Rails.logger.debug { "find new matching exercise for user #{user.id}" }
matching_exercise =
begin
find_matching_exercise(user)
rescue StandardError => e # fallback
Rails.logger.error("finding matching exercise failed. Fall back to random exercise! Error: #{$ERROR_INFO}")
@reason[:reason] = 'fallback because of error'
@reason[:error] = "#{$ERROR_INFO}:\n\t#{e.backtrace.join("\n\t")}"
exercises.where('expected_difficulty > 1').sample # difficulty should be > 1 to prevent dummy exercise from being chosen.
case algorithm
when 'best_match'
Rails.logger.debug { "find new matching exercise for user #{user.id}" }
begin
find_matching_exercise(user)
rescue StandardError => e # fallback
Rails.logger.error("finding matching exercise failed. Fall back to random exercise! Error: #{$ERROR_INFO}")
@reason[:reason] = 'fallback because of error'
@reason[:error] = "#{$ERROR_INFO}:\n\t#{e.backtrace.join("\n\t")}"
exercises.where('expected_difficulty > 1').sample # difficulty should be > 1 to prevent dummy exercise from being chosen.
end
when 'random'
@reason[:reason] = 'random exercise requested'
exercises.sample
else
raise "Unknown algorithm #{algorithm}"
end
user.user_proxy_exercise_exercises << UserProxyExerciseExercise.create(user:,
exercise: matching_exercise, proxy_exercise: self, reason: @reason.to_json)
matching_exercise