/
search.rb
168 lines (140 loc) · 4.02 KB
/
search.rb
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require "active_support/core_ext/module/delegation"
require "active_support/core_ext/object/blank"
module Administrate
class Search
class Query
attr_reader :filters, :valid_filters
def blank?
terms.blank? && filters.empty?
end
def initialize(original_query, valid_filters = nil)
@original_query = original_query
@valid_filters = valid_filters
@filters, @terms = parse_query(original_query)
end
def original
@original_query
end
def terms
@terms.join(" ")
end
def to_s
original
end
private
def filter?(word)
valid_filters&.any? { |filter| word.match?(/^#{filter}:/) }
end
def parse_query(query)
filters = []
terms = []
query.to_s.split.each do |word|
if filter?(word)
filters << word
else
terms << word
end
end
[filters, terms]
end
end
def initialize(scoped_resource, dashboard, term)
@dashboard = dashboard
@scoped_resource = scoped_resource
@query = Query.new(term, valid_filters.keys)
end
def run
if query.blank?
@scoped_resource.all
else
results = search_results(@scoped_resource)
filter_results(results)
end
end
private
def apply_filter(filter, filter_param, resources)
return resources unless filter
if filter.parameters.size == 1
filter.call(resources)
else
filter.call(resources, filter_param)
end
end
def filter_results(resources)
query.filters.each do |filter_query|
filter_name, filter_param = filter_query.split(":")
filter = valid_filters[filter_name]
resources = apply_filter(filter, filter_param, resources)
end
resources
end
def query_template
search_attributes.map do |attr|
table_name = query_table_name(attr)
searchable_fields(attr).map do |field|
column_name = column_to_query(field)
"LOWER(CAST(#{table_name}.#{column_name} AS CHAR(256))) LIKE ?"
end.join(" OR ")
end.join(" OR ")
end
def searchable_fields(attr)
return [attr] unless association_search?(attr)
attribute_types[attr].searchable_fields
end
def query_values
fields_count = search_attributes.sum do |attr|
searchable_fields(attr).count
end
["%#{term.mb_chars.downcase}%"] * fields_count
end
def search_attributes
@dashboard.search_attributes
end
def search_results(resources)
resources
.left_joins(tables_to_join)
.where(query_template, *query_values)
end
def valid_filters
if @dashboard.class.const_defined?(:COLLECTION_FILTERS)
@dashboard.class.const_get(:COLLECTION_FILTERS).stringify_keys
else
{}
end
end
def attribute_types
@dashboard.class.const_get(:ATTRIBUTE_TYPES)
end
def query_table_name(attr)
if association_search?(attr)
provided_class_name = attribute_types[attr].options[:class_name]
unquoted_table_name =
if provided_class_name
Administrate.warn_of_deprecated_option(:class_name)
provided_class_name.constantize.table_name
else
@scoped_resource.reflect_on_association(attr).klass.table_name
end
ActiveRecord::Base.connection.quote_table_name(unquoted_table_name)
else
ActiveRecord::Base.connection
.quote_table_name(@scoped_resource.table_name)
end
end
def column_to_query(attr)
ActiveRecord::Base.connection.quote_column_name(attr)
end
def tables_to_join
attribute_types.keys.select do |attribute|
attribute_types[attribute].searchable? && association_search?(attribute)
end
end
def association_search?(attribute)
attribute_types[attribute].associative?
end
def term
query.terms
end
attr_reader :resolver, :query
end
end