Class: Datagrid::Filters::DynamicFilter
Constant Summary
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- EQUAL_OPERATION =
'='
- LIKE_OPERATION =
'=~'
- MORE_EQUAL_OPERATION =
'>='
- LESS_EQUAL_OPERATION =
'<='
- DEFAULT_OPERATIONS =
[
EQUAL_OPERATION,
LIKE_OPERATION,
MORE_EQUAL_OPERATION,
LESS_EQUAL_OPERATION,
]
- AVAILABLE_OPERATIONS =
%w(= =~ >= <=)
Instance Attribute Summary
Attributes inherited from BaseFilter
#block, #grid_class, #name, #options
Instance Method Summary
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#include_blank, #prompt, #select
Methods inherited from BaseFilter
#allow_blank?, #allow_nil?, #apply, #default, #default_filter_block, #dummy?, #enabled?, form_builder_helper_name, #form_builder_helper_name, #format, #header, #multiple?, #parse, #separator, #supports_range?, #type
Constructor Details
Returns a new instance of DynamicFilter.
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# File 'lib/datagrid/filters/dynamic_filter.rb', line 19
def initialize(*)
super
options[:select] ||= default_select
options[:operations] ||= DEFAULT_OPERATIONS
unless options.has_key?(:include_blank)
options[:include_blank] = false
end
end
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Instance Method Details
#default_filter_where(scope, filter) ⇒ Object
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# File 'lib/datagrid/filters/dynamic_filter.rb', line 39
def default_filter_where(scope, filter)
field, operation, value = filter
date_conversion = value.is_a?(Date) && driver.is_timestamp?(scope, field)
return scope if field.blank? || operation.blank?
unless operations.include?(operation)
raise Datagrid::FilteringError, "Unknown operation: #{operation.inspect}. Available operations: #{operations.join(' ')}"
end
case operation
when EQUAL_OPERATION
if date_conversion
value = Datagrid::Utils.format_date_as_timestamp(value)
end
driver.where(scope, field, value)
when LIKE_OPERATION
if column_type(field) == :string
driver.contains(scope, field, value)
else
if date_conversion
value = Datagrid::Utils.format_date_as_timestamp(value)
end
driver.where(scope, field, value)
end
when MORE_EQUAL_OPERATION
if date_conversion
value = value.beginning_of_day
end
driver.greater_equal(scope, field, value)
when LESS_EQUAL_OPERATION
if date_conversion
value = value.end_of_day
end
driver.less_equal(scope, field, value)
else
raise Datagrid::FilteringError, "Unknown operation: #{operation.inspect}. Use filter block argument to implement operation"
end
end
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#operations ⇒ Object
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# File 'lib/datagrid/filters/dynamic_filter.rb', line 77
def operations
options[:operations]
end
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#operations_select ⇒ Object
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# File 'lib/datagrid/filters/dynamic_filter.rb', line 81
def operations_select
operations.map do |operation|
[I18n.t(operation, :scope => "datagrid.filters.dynamic.operations").html_safe, operation]
end
end
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#parse_values(filter) ⇒ Object
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# File 'lib/datagrid/filters/dynamic_filter.rb', line 28
def parse_values(filter)
field, operation, value = filter
[field, operation, type_cast(field, value)]
end
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#unapplicable_value?(filter) ⇒ Boolean
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# File 'lib/datagrid/filters/dynamic_filter.rb', line 34
def unapplicable_value?(filter)
_, _, value = filter
super(value)
end
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