116 lines
3.8 KiB
Ruby
116 lines
3.8 KiB
Ruby
#
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# Copyright (C) 2011 Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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class LearningOutcomeResult < ActiveRecord::Base
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belongs_to :user
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belongs_to :learning_outcome
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belongs_to :alignment, :class_name => 'ContentTag', :foreign_key => :content_tag_id
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belongs_to :association, :polymorphic => true
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belongs_to :artifact, :polymorphic => true
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belongs_to :associated_asset, :polymorphic => true
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belongs_to :context, :polymorphic => true
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simply_versioned
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before_save :infer_defaults
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attr_accessible :learning_outcome, :user, :association, :alignment, :associated_asset
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def infer_defaults
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self.learning_outcome_id = self.alignment.learning_outcome_id
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self.context_code = "#{self.context_type.underscore}_#{self.context_id}" rescue nil
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self.original_score ||= self.score
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self.original_possible ||= self.possible
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self.original_mastery = self.mastery if self.original_mastery == nil
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self.percent = self.score.to_f / self.possible.to_f rescue nil
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self.percent = nil if self.percent && !self.percent.to_f.finite?
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true
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end
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def assignment
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if self.association.is_a?(Assignment)
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self.association
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elsif self.artifact.is_a?(RubricAssessment)
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self.artifact.rubric_association.association
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else
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nil
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end
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end
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def changes_worth_versioning?
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!(self.changes.keys - [
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"updated_at",
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]).empty?
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end
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def save_to_version(attempt)
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current_version = self.versions.current.try(:model)
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if current_version.try(:attempt) && attempt < current_version.attempt
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versions = self.versions.sort_by(&:created_at).reverse.select{|v| v.model.attempt == attempt}
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if !versions.empty?
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versions.each do |version|
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version_data = YAML::load(version.yaml)
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version_data["score"] = self.score
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version_data["mastery"] = self.mastery
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version_data["possible"] = self.possible
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version_data["attempt"] = self.attempt
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version_data["title"] = self.title
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version.yaml = version_data.to_yaml
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version.save
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end
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else
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save
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end
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else
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save
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end
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end
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named_scope :for_context_codes, lambda{|codes|
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if codes == 'all'
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{}
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else
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{:conditions => {:context_code => Array(codes)} }
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end
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}
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named_scope :for_user, lambda{|user|
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{:conditions => {:user_id => user.id} }
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}
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named_scope :custom_ordering, lambda{|param|
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orders = {
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'recent' => "assessed_at DESC",
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'highest' => "score DESC",
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'oldest' => "score ASC",
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'default' => "assessed_at DESC"
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}
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order = orders[param] || orders['default']
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{:order => order }
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}
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named_scope :for_outcome_ids, lambda{|ids|
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{:conditions => {:learning_outcome_id => ids} }
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}
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named_scope :for_association, lambda{|association|
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{:conditions => {:association_type => association.class.to_s, :association_id => association.id} }
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}
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named_scope :for_associated_asset, lambda{|associated_asset|
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{:conditions => {:associated_asset_type => associated_asset.class.to_s, :associated_asset_id => associated_asset.id} }
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}
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named_scope :for_user, lambda{|user|
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user_id = user.is_a?(User) ? user.id : user
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{:conditions => {:user_id => user_id} }
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}
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end
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