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# Custom Filter Method
## Overview
We can add a custom filter method to filter records based on specific criteria. This is useful when the default filtering options do not meet the requirements. The custom filter method can be defined using the `filter_with` option.
## Usage
The custom filter method is implemented using the `filter` dsl_method with the `filter_with` option. Below are the key elements and their usage:
### Syntax
```ruby
filter :filter_name, :filter_type, filter_with: :custom_filter_method
```
### Example
**1. For Search and Select:**
Define the custom filter method in your model:
```ruby
class YourModel < ApplicationRecord
scope :custom_filter_method, ->(value) { where('column_name LIKE ?', "%#{value}%") }
end
```
Use the custom filter method in your cm admin:
```ruby
filter :filter_name, :search, filter_with: :custom_filter_method
```
```ruby
filter :filter_name, :single_select, helper_method: :options_for_select, filter_with: :custom_filter_method
```
**2. For Date and Range:**
Define the custom filter method in your model:
```ruby
class YourModel < ApplicationRecord
scope :custom_filter_method, ->(from, to) { where('column_name BETWEEN ? AND ?', from, to) }
end
```
Use the custom filter method in your cm admin:
```ruby
filter :filter_name, :date, filter_with: :custom_filter_method
```
Version data entries
13 entries across 13 versions & 1 rubygems