Class: Datagrid::Filters::BaseFilter
- Inherits:
-
Object
- Object
- Datagrid::Filters::BaseFilter
show all
- Defined in:
- lib/datagrid/filters/base_filter.rb
Overview
Instance Attribute Summary collapse
Class Method Summary
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Instance Method Summary
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Constructor Details
#initialize(grid_class, name, options = {}, &block) ⇒ BaseFilter
Returns a new instance of BaseFilter.
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# File 'lib/datagrid/filters/base_filter.rb', line 8
def initialize(grid_class, name, options = {}, &block)
self.grid_class = grid_class
self.name = name
self.options = options
self.block = block || default_filter_block
end
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Instance Attribute Details
#block ⇒ Object
Returns the value of attribute block.
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# File 'lib/datagrid/filters/base_filter.rb', line 6
def block
@block
end
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#grid_class ⇒ Object
Returns the value of attribute grid_class.
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# File 'lib/datagrid/filters/base_filter.rb', line 6
def grid_class
@grid_class
end
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#name ⇒ Object
Returns the value of attribute name.
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# File 'lib/datagrid/filters/base_filter.rb', line 6
def name
@name
end
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#options ⇒ Object
Returns the value of attribute options.
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# File 'lib/datagrid/filters/base_filter.rb', line 6
def options
@options
end
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Class Method Details
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# File 'lib/datagrid/filters/base_filter.rb', line 82
def self.form_builder_helper_name
:"datagrid_#{self.to_s.demodulize.underscore}"
end
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Instance Method Details
#allow_blank? ⇒ Boolean
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# File 'lib/datagrid/filters/base_filter.rb', line 74
def allow_blank?
options[:allow_blank]
end
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#allow_nil? ⇒ Boolean
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# File 'lib/datagrid/filters/base_filter.rb', line 70
def allow_nil?
options.has_key?(:allow_nil) ? options[:allow_nil] : options[:allow_blank]
end
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#apply(grid_object, scope, value) ⇒ Object
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# File 'lib/datagrid/filters/base_filter.rb', line 23
def apply(grid_object, scope, value)
return scope if unapplicable_value?(value)
result = execute(value, scope, grid_object)
return scope unless result
unless grid_object.driver.match?(result)
raise Datagrid::FilteringError, "Can not apply #{name.inspect} filter: result #{result.inspect} no longer match #{grid_object.driver.class}."
end
result
end
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#default ⇒ Object
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# File 'lib/datagrid/filters/base_filter.rb', line 56
def default
default = self.options[:default]
default.respond_to?(:call) ? default.call : default
end
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#default_filter(value, scope, grid) ⇒ Object
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# File 'lib/datagrid/filters/base_filter.rb', line 93
def default_filter(value, scope, grid)
return nil if dummy?
driver = grid.driver
if !driver.has_column?(scope, name) && driver.to_scope(scope).respond_to?(name)
driver.to_scope(scope).send(name, value)
else
default_filter_where(driver, scope, value)
end
end
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#default_filter_block ⇒ Object
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# File 'lib/datagrid/filters/base_filter.rb', line 86
def default_filter_block
filter = self
lambda do |value, scope, grid|
filter.default_filter(value, scope, grid)
end
end
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#dummy? ⇒ Boolean
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# File 'lib/datagrid/filters/base_filter.rb', line 107
def dummy?
options[:dummy]
end
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# File 'lib/datagrid/filters/base_filter.rb', line 78
def form_builder_helper_name
self.class.form_builder_helper_name
end
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# File 'lib/datagrid/filters/base_filter.rb', line 103
def format(value)
value.nil? ? nil : value.to_s
end
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# File 'lib/datagrid/filters/base_filter.rb', line 51
def
options[:header] ||
I18n.translate(self.name, :scope => "datagrid.#{grid_class.param_name}.filters", :default => self.name.to_s.humanize)
end
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#multiple ⇒ Object
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# File 'lib/datagrid/filters/base_filter.rb', line 61
def multiple
Datagrid::Utils.warn_once("Filter#multiple method is deprecated. Use Filter#multiple? instead")
multiple?
end
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#multiple? ⇒ Boolean
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# File 'lib/datagrid/filters/base_filter.rb', line 66
def multiple?
self.options[:multiple]
end
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#parse(value) ⇒ Object
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# File 'lib/datagrid/filters/base_filter.rb', line 15
def parse(value)
raise NotImplementedError, "#parse(value) suppose to be overwritten"
end
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#parse_values(value) ⇒ Object
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# File 'lib/datagrid/filters/base_filter.rb', line 34
def parse_values(value)
if multiple?
normalize_multiple_value(value).map do |v|
parse(v)
end
else
if value.is_a?(Array)
raise Datagrid::ArgumentError, "#{grid_class}##{name} filter can not accept Array argument. Use :multiple option."
end
parse(value)
end
end
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#separator ⇒ Object
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# File 'lib/datagrid/filters/base_filter.rb', line 47
def separator
options[:multiple].is_a?(String) ? options[:multiple] : default_separator
end
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#unapplicable_value?(value) ⇒ Boolean
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# File 'lib/datagrid/filters/base_filter.rb', line 19
def unapplicable_value?(value)
value.nil? ? !allow_nil? : value.blank? && !allow_blank?
end
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