Class: Filterer::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/filterer/base.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(params = {}, opts = {}) ⇒ Base

Returns a new instance of Base.



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# File 'lib/filterer/base.rb', line 73

def initialize(params = {}, opts = {})
  self.opts = opts
  self.params = defaults.merge(parse_strong_parameters(params)).
                  with_indifferent_access
  self.results = opts[:starting_query] || starting_query
  self.results = apply_default_filters || results
  add_params_to_query
  self.results = ordered_results unless opts[:skip_ordering]
  paginate_results unless opts[:skip_pagination]
  extend_active_record_relation
end

Instance Attribute Details

#meta ⇒ Object

Returns the value of attribute meta.



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# File 'lib/filterer/base.rb', line 3

def meta
  @meta
end

#opts ⇒ Object

Returns the value of attribute opts.



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# File 'lib/filterer/base.rb', line 3

def opts
  @opts
end

#params ⇒ Object

Returns the value of attribute params.



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# File 'lib/filterer/base.rb', line 3

def params
  @params
end

#results ⇒ Object

Returns the value of attribute results.



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# File 'lib/filterer/base.rb', line 3

def results
  @results
end

#sort ⇒ String

Returns the key for the applied sort option.

Returns:

  • (String) —

    the key for the applied sort option.



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# File 'lib/filterer/base.rb', line 98

def sort
  @sort
end

Class Method Details

.chain(params = {}, opts = {}) ⇒ ActiveRecord::Association

Returns:

  • (ActiveRecord::Association) 


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# File 'lib/filterer/base.rb', line 65

def chain(params = {}, opts = {})
  new(params, opts.merge(
    skip_ordering: true,
    skip_pagination: true
  )).results
end

.filter(params = {}, opts = {}) ⇒ ActiveRecord::Association

Public API

Returns:

  • (ActiveRecord::Association) 


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# File 'lib/filterer/base.rb', line 53

def filter(params = {}, opts = {})
  new(params, opts).results
end

.filter_without_pagination(params = {}, opts = {}) ⇒ ActiveRecord::Association

Returns:

  • (ActiveRecord::Association) 


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# File 'lib/filterer/base.rb', line 58

def filter_without_pagination(params = {}, opts = {})
  new(params, opts.merge(
    skip_pagination: true
  )).results
end

.sort_option(key, string_or_proc = nil, opts = {}) ⇒ Object

Macro for adding sort options



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# File 'lib/filterer/base.rb', line 23

def sort_option(key, string_or_proc = nil, opts = {})
  if string_or_proc.is_a?(Hash)
    opts, string_or_proc = string_or_proc.clone, nil
  end

  if !string_or_proc
    if key.is_a?(String)
      string_or_proc = key
    else
      raise 'Please provide a query string or a proc.'
    end
  end

  if key.is_a?(Regexp) && opts[:default]
    raise "Default sort option can't have a Regexp key."
  end

  if string_or_proc.is_a?(Proc) && opts[:tiebreaker]
    raise "Tiebreaker can't be a proc."
  end

  self.sort_options += [{
    key: key,
    string_or_proc: string_or_proc,
    opts: opts
  }]
end

Instance Method Details

#defaults ⇒ Object 



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# File 'lib/filterer/base.rb', line 85

def defaults
  {}
end

#direction ⇒ Object 



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# File 'lib/filterer/base.rb', line 93

def direction
  params[:direction].try(:downcase) == 'desc' ? 'desc' : 'asc'
end

#starting_query ⇒ Object 



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# File 'lib/filterer/base.rb', line 89

def starting_query
  raise 'You must override this method!'
end