Popularity
4.1
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Activity
0.0
Stable
13
2
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Programming language: Crystal
License: MIT License
Tags:
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Latest version: v0.2.5
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README
query
Query abstraction.
Installation
Add this to your application's shard.yml:
dependencies:
query:
github: waterlink/query.cr
version: ~> 0.2
Usage
require "query"
include Query::CriteriaHelper
criteria(name)
criteria("first_name")
Comparison (==, !=, <, <=, >, >=)
criteria("first_name") == "John" # => Equals<first_name, John>
criteria("second_name") != "Smith" # => NotEquals<second_name, Smith>
criteria("age") < 24 # => LessThan<age, 24>
criteria("age") <= 24 # => LessThanOrEqual<age, 24>
criteria("age") > 24 # => MoreThan<age, 24>
criteria("age") >= 24 # => MoreThanOrEqual<age, 24>
Inclusion (in)
criteria("first_name").in(["John", "Bob"]) # => In<first_name, ["John", "Bob"]>
Special (is_true, is_not_true, is_false, is_not_false, is_unknown, is_not_unknown, is_null, is_not_null)
criteria("verified").is_true # => IsTrue<verified>
criteria("verified").is_not_true # => IsNotTrue<verified>
criteria("verified").is_false # => IsFalse<verified>
criteria("verified").is_not_false # => IsNotFalse<verified>
criteria("age").is_unknown # => IsUnknown<age>
criteria("age").is_not_unknown # => IsNotUnknown<age>
criteria("email").is_null # => IsNull<email>
criteria("email").is_not_null # => IsNotNull<email>
Logic (not, and, &, or, |, xor, ^)
(criteria("age") > 21).not # => Not<MoreThan<age, 21>>
(criteria("age") > 27).and (criteria("age") < 35)
# => And<MoreThan<age, 27>, LessThan<age, 35>>
(criteria("age") > 27) & (criteria("age") < 35)
# => And<MoreThan<age, 27>, LessThan<age, 35>>
(criteria("age") < 27).or (criteria("age") > 35)
# => Or<LessThan<age, 27>, MoreThan<age, 35>>
(criteria("age") < 27) | (criteria("age") > 35)
# => Or<LessThan<age, 27>, MoreThan<age, 35>>
(criteria("age") > 27).xor (criteria("age") < 35)
# => Xor<MoreThan<age, 27>, LessThan<age, 35>>
(criteria("age") > 27) ^ (criteria("age") < 35)
# => Xor<MoreThan<age, 27>, LessThan<age, 35>>
Contributing
- Fork it ( https://github.com/waterlink/query.cr/fork )
- Create your feature branch (git checkout -b my-new-feature)
- Commit your changes (git commit -am 'Add some feature')
- Push to the branch (git push origin my-new-feature)
- Create a new Pull Request
Contributors
- waterlink Oleksii Fedorov - creator, maintainer