Class: AzaharaSchema::Attribute
- Inherits:
-
Object
- Object
- AzaharaSchema::Attribute
show all
- Defined in:
- lib/azahara_schema/attribute.rb
Instance Attribute Summary collapse
Instance Method Summary
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Constructor Details
#initialize(model, name, type) ⇒ Attribute
Returns a new instance of Attribute.
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# File 'lib/azahara_schema/attribute.rb', line 7
def initialize(model, name, type)
@name, @model = name, model
@format = AzaharaSchema::FieldFormat.find(type)
end
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Instance Attribute Details
Returns the value of attribute format.
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# File 'lib/azahara_schema/attribute.rb', line 5
def format
@format
end
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#model ⇒ Object
Returns the value of attribute model.
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# File 'lib/azahara_schema/attribute.rb', line 5
def model
@model
end
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#name ⇒ Object
Returns the value of attribute name.
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# File 'lib/azahara_schema/attribute.rb', line 5
def name
@name
end
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#table_alias ⇒ Object
Returns the value of attribute table_alias.
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# File 'lib/azahara_schema/attribute.rb', line 5
def table_alias
@table_alias
end
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Instance Method Details
#add_join(scope) ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 111
def add_join(scope)
scope
end
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#add_preload(scope) ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 115
def add_preload(scope)
scope
end
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#add_sort(scope, order) ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 124
def add_sort(scope, order)
scope.order( arel_sort_field.public_send(order) )
end
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#add_statement(scope, operator, values) ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 119
def add_statement(scope, operator, values)
values = [values] unless values.is_a?(Array)
scope.where(arel_statement(operator, values))
end
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#aggregable? ⇒ Boolean
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# File 'lib/azahara_schema/attribute.rb', line 63
def aggregable?
format.aggregable?
end
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#arel_field(t_alias = self.table_alias) ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 33
def arel_field(t_alias=self.table_alias)
arel_table(t_alias)[filter_name]
end
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#arel_join(parent = nil, join_type = ::Arel::Nodes::OuterJoin, a_tbl = self.arel_table(self.table_alias)) ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 140
def arel_join(parent=nil, join_type=::Arel::Nodes::OuterJoin, a_tbl=self.arel_table(self.table_alias))
parent
end
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#arel_sort_field ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 37
def arel_sort_field
arel_field
end
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#arel_statement(operator, values) ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 76
def arel_statement(operator, values)
values = values.collect{|v| format.sanitize_value(v) }
case operator
when '='
condition = arel_field.in(values.compact) unless values.compact.empty?
if values.include?(nil)
c_nil = arel_field.eq(nil)
condition = condition ? condition.or(c_nil) : c_nil
end
condition
when '~'
vals = values.collect{|v| v.split }.flatten
arl = arel_field.matches("%#{vals[0]}%")
vals[1..-1].each{|v| arl = arl.or( arel_field.matches("%#{v}%") ) }
arl
when '>='
if values.any? { /\d{4}-\d{2}-\d{2}/ =~ _1 }
arel_field.lteq(values.map { Date.parse(_1) }.min)
else
arel_field.lteq(values.map(&:to_f).min)
end
when '<='
if values.any? { /\d{4}-\d{2}-\d{2}/ =~ _1 }
arel_field.lteq(values.map { Date.parse(_1) }.max)
else
arel_field.lteq(values.map(&:to_f).max)
end
when '@>'
require 'arel/azahara_postgres_exts'
arel_field.contains(values)
else
throw 'Unknown operator ' + operator.to_s
end
end
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#arel_table(t_alias = self.table_alias) ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 29
def arel_table(t_alias=self.table_alias)
t_alias ? model.arel_table.alias(t_alias) : model.arel_table
end
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#association_hash ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 136
def association_hash
{}
end
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#available_operators ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 12
def available_operators
format.available_operators
end
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#available_values ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 16
def available_values
case type
when 'list'
@model.try(name.to_s.pluralize)
else
nil
end
end
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#build_json_options!(options) ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 128
def build_json_options!(options)
options
end
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#column? ⇒ Boolean
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# File 'lib/azahara_schema/attribute.rb', line 55
def column?
true
end
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#filter? ⇒ Boolean
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# File 'lib/azahara_schema/attribute.rb', line 59
def filter?
true
end
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#filter_name ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 41
def filter_name
name
end
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#path ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 46
def path
name
end
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#primary_key_name ⇒ Object
Name of the primary key attribute (same as column obviously)
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# File 'lib/azahara_schema/attribute.rb', line 51
def primary_key_name
model.primary_key
end
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#searchable? ⇒ Boolean
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# File 'lib/azahara_schema/attribute.rb', line 67
def searchable?
format.searchable?
end
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#type ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 25
def type
format.format_name
end
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#value(record) ⇒ Object
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# File 'lib/azahara_schema/attribute.rb', line 71
def value(record)
record.public_send(name)
end
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