Class: Paginate::Base

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(scope, options = {}) ⇒ Base

Returns a new instance of Base.



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# File 'lib/paginate/base.rb', line 6

def initialize(scope, options = {})
  @scope = scope

  if options.kind_of?(Hash)
    @options = options
  else
    @options = {page: options.to_i}
  end

  @options.reverse_merge!(Paginate.configuration.to_hash)
end

Instance Attribute Details

#options ⇒ Object

Returns the value of attribute options.



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

def options
  @options
end

#scope ⇒ Object

Returns the value of attribute scope.



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# File 'lib/paginate/base.rb', line 4

def scope
  @scope
end

Instance Method Details

#collection_size ⇒ Object 



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# File 'lib/paginate/base.rb', line 18

def collection_size
  @collection_size ||= options[:collection].size
end

#limit ⇒ Object 



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# File 'lib/paginate/base.rb', line 38

def limit
  [options[:size], 10].compact.first.to_i + 1
end

#next_page? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/paginate/base.rb', line 22

def next_page?
  collection_size > options[:size]
end

#offset ⇒ Object 



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# File 'lib/paginate/base.rb', line 34

def offset
  (page - 1) * (limit - 1)
end

#page ⇒ Object 



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# File 'lib/paginate/base.rb', line 30

def page
  [1, options.fetch(:page, 1).to_i].max
end

#previous_page? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/paginate/base.rb', line 26

def previous_page?
  page > 1
end

#to_options ⇒ Object 



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# File 'lib/paginate/base.rb', line 42

def to_options
  {limit: limit, offset: offset}
end

#to_scope ⇒ Object 



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# File 'lib/paginate/base.rb', line 46

def to_scope
  scope
    .limit(limit)
    .offset(offset)
end