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# frozen_string_literal: true |
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# == Schema Information |
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# |
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# Table name: items |
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# |
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# id :integer not null, primary key |
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# instrument_id :integer not null |
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# name :string not null |
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# item_type :string not null |
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# title :string not null |
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# response_scale_id :integer |
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# is_required :boolean default(TRUE), not null |
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# created_at :datetime not null |
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# updated_at :datetime not null |
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# |
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# Indexes |
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# |
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# index_by_item_name (name) UNIQUE |
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# index_items_on_instrument_id (instrument_id) |
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# index_items_on_response_scale_id (response_scale_id) |
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# |
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# Table name: items |
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# id :integer not null, primary key |
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# instrument_id :integer not null |
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# name :string not null |
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# item_type :string not null |
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# title :string not null |
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# response_scale_id :integer |
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# is_required :boolean default(TRUE), not null |
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# |
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# Represents a psychometric item |
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# Similar to a question with metadata |
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class Item < ApplicationRecord |
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include Discard::Model |
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belongs_to :instrument, inverse_of: :items, touch: true |
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belongs_to :response_scale, inverse_of: :items, optional: true |
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has_many :choices, through: :response_scale |
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validates :name, presence: true |
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validates :instrument, presence: true |
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validates_uniqueness_of :name |
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validates_length_of :name, \ |
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within: 2..20, \ |
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too_long: 'pick a shorter name', \ |
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too_short: 'pick a longer name' |
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validates :item_type, presence: true |
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validates_length_of :item_type, \ |
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within: 3..20, \ |
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too_long: 'pick a shorter item type', \ |
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too_short: 'pick a longer item type' |
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def find_choice_by_value(value) |
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choices.find_by(response_scale: response_scale, value: value) |
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end |
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def to_s |
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name |
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end |
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end |
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