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Type Scopes

Type scopes creates useful semantic scopes based on the type of the columns of your models. The goal is help to write eloquent code such as:

Transaction.paid_after(Date.yesterday).amount_between(100, 200).not_refunded

It handles dates, times, strings, numerics and booleans. Here are examples for all the available scopes:

# paid_at: datetime
# amount: decimal
# description: string
class Transaction < ActiveRecord::Base
  TypeScopes.inject self
end

# Time scopes
Transaction.paid_to("2017-09-06") # => where("paid_at <= '2017-09-06'")
Transaction.paid_from("2017-09-06") # => where("paid_at >= '2017-09-06'")
Transaction.paid_after("2017-09-06") # => where("paid_at > '2017-09-06'")
Transaction.paid_before("2017-09-06") #= where("paid_at < '2017-09-06'")
Transaction.paid_between("2017-09-06", "2017-09-07")  # => where("paid_at BETWEEN '2017-09-06' AND '2017-09-07'")
Transaction.paid_not_between("2017-09-06", "2017-09-07")  # => where("paid_at NOT BETWEEN '2017-09-06' AND '2017-09-07'")
Transaction.paid_within("2017-09-06", "2017-09-07")  # => where("paid_at > '2017-09-06' AND paid_at < '2017-09-07'")
Transaction.paid_not_within("2017-09-06", "2017-09-07")  # => where("paid_at <= '2017-09-06' OR paid_at >= '2017-09-07'")

# Numeric scopes
Transaction.amount_to(100) # => where("amount <= 100")
Transaction.amount_from(100) # => where("amount >= 100")
Transaction.amount_above(100) # => where("amount > 100")
Transaction.amount_below(100) # => where("amount < 100")
Transaction.amount_between(100, 200) # => where("amount BETWEEN 100 AND 200")
Transaction.amount_not_between(100, 200) # => where("amount NOT BETWEEN 100 AND 200")
Transaction.amount_within(100, 200) # => where("amount > 100 AND amount < 200")
Transaction.amount_not_within(100, 200) # => where("amount <= 100 OR amount >= 200")

# String scopes
Transaction.description_contains("foo") # => where("description LIKE '%foo%'")
Transaction.description_contains("foo", sensitive: false) # => where("description ILIKE '%foo%'")
Transaction.description_starts_with("foo") # => where("description LIKE 'foo%'")
Transaction.description_starts_with("foo", sensitive: false) # => where("description ILIKE 'foo%'")
Transaction.description_does_not_start_with("foo") # => where("description NOT LIKE 'foo%'")
Transaction.description_does_not_start_with("foo", sensitive: false) # => where("description NOT ILIKE 'foo%'")
Transaction.description_ends_with("foo") # => where("description LIKE '%foo'")
Transaction.description_ends_with("foo", sensitive: false) # => where("description ILIKE '%foo'")
Transaction.description_does_not_end_with("foo") # => where("description NOT LIKE '%foo'")
Transaction.description_does_not_end_with("foo", sensitive: false) # => where("description NOT ILIKE '%foo'")
Transaction.description_like("%foo%") # => where("description LIKE '%foo%'")
Transaction.description_not_like("%foo%") # => where("description NOT LIKE '%foo%'")
Transaction.description_ilike("%foo%") # => where("description ILIKE '%foo%'")
Transaction.description_not_ilike("%foo%") # => where("description NOT ILIKE '%foo%'")
Transaction.description_matches("^Regex$") # => where("description ~ '^Regex$'")
Transaction.description_does_not_match("^Regex$") # => where("description !~ '^Regex$'")

# Boolean scopes
Transaction.non_profit # => where("non_profit = true")
Transaction.not_non_profit # => where("non_profit = false")
Transaction.is_valid # => where("is_valid = true")
Transaction.is_not_valid # => where("is_valid = false")
Transaction.has_payment # => where("has_payment = true")
Transaction.has_not_payment # => where("has_payment = false")
Transaction.was_processed # => where("was_processed = true")
Transaction.was_not_processed # => where("was_processed = false")

For the string colums, the pattern matching is escaped. So it's safe to provide directly a user input. There is an exception for the column_like, column_ilike, column_matches and column_does_not_match where the pattern is not escaped and you shouldn't provide untrusted strings.

Transaction.description_contains("%foo_") # => where("description LIKE '%[%]foo[_]%'")

Install

Add to your Gemfile gem "type_scopes" and run in your terminal bundle install. Then call TypeScopes.inject self from your models:

# /app/models/transaction.rb
class Transaction < ApplicationRecord
  # Creates scope for all supported column types
  TypeScopes.inject self

  # Or if you prefer to enable scopes for specific columns only
  TypeScopes.inject self, :amount, :paid_at
end

In case there is a conflict with a scope name, TypeScopes won't over write your existing scope. You can safely inject TypeScopes and it won't break any scope defined previously.

MIT License

Made by Base Secrète.

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