class Halumi::Query
Attributes
relation[R]
Public Class Methods
inherited(klass)
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# File lib/halumi/query.rb, line 9 def self.inherited(klass) klass.instance_variable_set(:@subqueries, @subqueries.clone) klass.instance_variable_set(:@relation, @relation) klass.instance_variable_set(:@defined_params, []) end
merge(subquery)
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# File lib/halumi/query.rb, line 19 def self.merge(subquery) @subqueries << subquery end
model(model)
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# File lib/halumi/query.rb, line 15 def self.model(model) @relation = model.all end
new(params = {}, relation = nil)
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# File lib/halumi/query.rb, line 31 def initialize(params = {}, relation = nil) @relation = relation&.all || class_relation @params = params @subqueries = subqueries end
param(param_name, type = nil, &block)
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# File lib/halumi/query.rb, line 23 def self.param(param_name, type = nil, &block) block ||= proc { type ? type[@params[param_name]] : @params[param_name] } define_method(param_name, block) @defined_params << param_name end
Public Instance Methods
call()
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# File lib/halumi/query.rb, line 37 def call respond_to?(:execute) ? safe_execute : merge_subqueries end
Private Instance Methods
class_defined_params()
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# File lib/halumi/query.rb, line 71 def class_defined_params self.class.instance_variable_get(:@defined_params) end
class_relation()
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# File lib/halumi/query.rb, line 67 def class_relation self.class.instance_variable_get(:@relation) end
class_subqueries()
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# File lib/halumi/query.rb, line 63 def class_subqueries self.class.instance_variable_get(:@subqueries) end
merge_subqueries()
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# File lib/halumi/query.rb, line 53 def merge_subqueries @subqueries.map(&:call).reduce(&:merge) end
safe_execute()
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# File lib/halumi/query.rb, line 43 def safe_execute validate_params && execute rescue Dry::Types::ConstraintError relation end
subqueries()
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# File lib/halumi/query.rb, line 57 def subqueries class_subqueries.map do |query| query.new(@params, @relation) end end
validate_params()
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# File lib/halumi/query.rb, line 49 def validate_params class_defined_params.each { |p| public_send(p) } end