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https://github.com/thadeu/recollect-array

🔃 Simple wrapper to filter array using Ruby and simple predicate conditions
https://github.com/thadeu/recollect-array

array array-filter array-like collection-filters filter gems recollect-array ruby

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🔃 Simple wrapper to filter array using Ruby and simple predicate conditions

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🔃 recollect-array


Simple wrapper to filter array using Ruby and simple predicate conditions



Gem


Build Status

## Motivation

Because in sometimes, we need filter array passing conditions. This gem simplify this work.

## Documentation

Version | Documentation
---------- | -------------
unreleased | https://github.com/thadeu/recollect-array/blob/main/README.md

## Table of Contents
- [Installation](#installation)
- [Configuration](#configuration)
- [Availables Predicates](#availables-predicates)
- [Usage](#usage)
- [Utilities](#utilities)

## Compatibility

| kind | branch | ruby |
| -------------- | ------- | ------------------ |
| unreleased | main | >= 2.5.8, <= 3.1.x |

## Installation

Use bundle

```ruby
bundle add recollect-array
```

or add this line to your application's Gemfile.

```ruby
gem 'recollect-array'
```

and then, require module

```ruby
require 'recollect/array'
```

## Configuration

Without configuration, because we use only Ruby. ❤️

## Availables Predicates for all values

| Type | Suffix | Value |
| ----------- | ----------- | ----------- |
| Equal | eq | Anywhere |
| NotEqual | noteq | Anywhere |
| Contains | cont | Anywhere |
| NotContains | notcont | Anywhere |
| Included | in | Anywhere |
| NotIncluded | notin | Anywhere |
| Start | start | Anywhere |
| NotStart | notstart | Anywhere |
| End | end | Anywhere |
| NotEnd | notend | Anywhere |
| LessThan | lt | Anywhere |
| LessThanEqual | lteq | Anywhere |
| GreaterThan | gt | Anywhere |
| GreaterThanEqual | gteq | Anywhere |

## Availables Predicates only when value is Hash

> 💡 Below predicates works only when value is Hash

| Type | Suffix | Value |
| ----------- | ----------- | ----------- |
| NotEqual | not_eq | Hash |
| NotContains | not_cont | Hash |
| NotIncluded | not_in | Hash |
| NotStart | not_start | Hash |
| NotEnd | not_end | Hash |

## Usage

Think that your data seems like this.

```ruby
data = [
{
id: 1,
name: 'Test #1',
email: 'test1@email1.com',
schedule: { all_day: true },
numbers: %w[1 2],
active: true,
count: 9
},
{
id: 2,
name: 'Test #2',
email: 'test2@email2.com',
schedule: { all_day: false },
numbers: %w[3 4],
active: true,
count: 10
},
{
id: 3,
name: 'Test #3',
email: 'test3@email3.com',
schedule: { all_day: false },
numbers: %w[5 6],
active: false,
count: 99
}
]
```

You can use one or multiples predicates in your filter. We see some use cases.

### Flexible Use Case (Hash)

**Equal**

```ruby
filters = {
active: {
eq: true
}
}

collection = Recollect::Array.filter(data, filters)
```

**NotEqual**

```ruby
filters = {
active: {
# noteq or not_eq
not_eq: true
}
}

collection = Recollect::Array.filter(data, filters)
```

**Nested Hash Paths**

```ruby
filters = {
'schedule.all_day': {
eq: true
}
}

collection = Recollect::Array.filter(data, filters)
```

**Nested Array Paths**

> Note the `.0` 🎉

```ruby
filters = {
'numbers.0': {
eq: '3'
}
}

collection = Recollect::Array.filter(data, filters)
```

```ruby
filters = {
numbers: {
in: '3' # or in: ['3']
}
}

collection = Recollect::Array.filter(data, filters)
```

Using default Equal predicate.

```ruby
Recollect::Array.filter(data, numbers: 3)

Recollect::Array.filter(data, active: true)

Recollect::Array.filter(data, id: 3)
```

If array, you can navigate into self, using `property.NUMBER.property`

```ruby
data = [
{
schedules: [
{
opened: true,
all_day: true
},
{
opened: false,
all_day: true
}
]
},
{
schedules: [
{
opened: false,
all_day: true
},
{
opened: false,
all_day: true
}
]
}
]

filters = {
'schedules.0.opened': {
eq: true
}
}

# OR

filters = {
'schedules[0]opened': {
eq: true
}
}

# OR

filters = {
'schedules.[0].opened': {
eq: true
}
}

collection = Recollect::Array.filter(data, filters)

# [{ schedules: [{ opened: true, all_day: true }, { opened: false, all_day: true }] }]
```

Amazing, you can pass a Callable value as value, like this.

```ruby
filters = {
'schedules.[0].opened': {
eq: -> { true }
}
}

# OR a Module

module ActiveTruthy
def self.call = true
end

module NumbersAvailable
def self.call = %w[1 2]
end

filters = {
'schedules.[0].opened': {
eq: ActiveTruthy
},
numbers: {
in: NumbersAvailable
}
}

# OR a Class

class ActiveFalsey
def self.call = false
end

filters = {
'schedules.[0].opened': {
eq: ActiveFalsey
}
}

collection = Recollect::Array.filter(data, filters)
```

**Combine conditions**

Yes, you can combine one or multiple predicates to filter you array.

```ruby
filters = {
active: { eq: true },
numbers: {
in: %w[5],
not_in: '10'
},
email: {
cont: 'email1',
not_cont: '@gmail'
},
'schedule.all_day': {
in: [true, false]
}
}

collection = Recollect::Array.filter(data, filters)
```

### Querystring Use Case

**Equal**

```ruby
filters = { active_eq: true }

collection = Recollect::Array.filter(data, filters)
```

**NotEqual**

```ruby
filters = { active_noteq: true }

collection = Recollect::Array.filter(data, filters)
```

**Nested Hash Paths**

```ruby
filters = { 'schedule.all_day_eq': false }

collection = Recollect::Array.filter(data, filters)
```

**Nested Array Paths**

> Note the `.0` 🎉

```ruby
filters = { 'numbers.0_eq': '3' }

collection = Recollect::Array.filter(data, filters)
```

```ruby
filters = { numbers_in: ['1'] }

collection = Recollect::Array.filter(data, filters)

expect(collection.size).to eq(1)
```

**Combine conditions**

Yes, you can combine one or multiple predicates to filter you array.

```ruby
filters = {
active_noteq: true,
numbers_in: %w[5],
email_cont: 'test3',
'schedule.all_day_eq': false
}

collection = Recollect::Array.filter(data, filters)
```

**Receive querystring in your route**

Like Ransack, imagine that you receive an querystring and you want to filter your Array. So, you can to do something like this.

> ⚠️ But security is your responsability, ok? Let's go!

```ruby
# receive querystring in your route
querystring = "active_noteq=true&numbers_in=5&email_cont=test3&schedule.all_day_eq=false"

# parse querystring and transform to Hash
params = URI.decode_www_form(querystring).to_h

# filter your collection using params directly.
collection = Recollect::Array.filter(data, filters)

# Beautiful, right? 🎉
```

[⬆️  Back to Top](#table-of-contents-)

## Development

After checking out the repo, run `bin/setup` to install dependencies. Then, run `bundle exec rspec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run `bundle install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).

## Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/thadeu/recollect-array. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [code of conduct](https://github.com/thadeu/recollect-array/blob/master/CODE_OF_CONDUCT.md).

## License

The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).