Class: ForestLiana::SearchQueryBuilder

Inherits:
Object
  • Object
show all
Defined in:
app/services/forest_liana/search_query_builder.rb

Instance Method Summary collapse

Constructor Details

#initialize(resource, params, includes) ⇒ SearchQueryBuilder

Returns a new instance of SearchQueryBuilder.



4
5
6
7
8
 
# File 'app/services/forest_liana/search_query_builder.rb', line 4

def initialize(resource, params, includes)
  @resource = @records = resource
  @params = params
  @includes = includes
end

Instance Method Details

#association?(field) ⇒ Boolean

Returns:

  • (Boolean) 


93
94
95
96
 
# File 'app/services/forest_liana/search_query_builder.rb', line 93

def association?(field)
  field = field.split(':').first if field.include?(':')
  @resource.reflect_on_association(field.to_sym).present?
end

#belongs_to_association?(field) ⇒ Boolean

Returns:

  • (Boolean) 


157
158
159
160
161
 
# File 'app/services/forest_liana/search_query_builder.rb', line 157

def belongs_to_association?(field)
  field = field.split(':').first if field.include?(':')
  association = @resource.reflect_on_association(field.to_sym)
  [:belongs_to, :has_one].include?(association.try(:macro))
end

#belongs_to_filter ⇒ Object 



186
187
188
189
190
191
192
193
194
195
196
197
198
 
# File 'app/services/forest_liana/search_query_builder.rb', line 186

def belongs_to_filter
  if @params[:filter]
    @params[:filter].each do |field, values|
      next unless belongs_to_association?(field)

      values.split(',').each do |value|
        @records = belongs_to_subfield_filter(field, value)
      end
    end
  end

  @records
end

#belongs_to_subfield_filter(field, value) ⇒ Object 



163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
 
# File 'app/services/forest_liana/search_query_builder.rb', line 163

def belongs_to_subfield_filter(field, value)
  field, subfield = field.split(':')

  association = @resource.reflect_on_association(field.to_sym)
  return if association.blank?

  operator, value = OperatorValueParser.parse(value)

  @records = @records
    .joins(field.to_sym)

  operator_date_interval_parser = OperatorDateIntervalParser.new(value,
    @params[:timezone])
  if operator_date_interval_parser.is_interval_date_value()
    filter = operator_date_interval_parser.get_interval_date_filter()
    @records = @records.where("#{association.table_name}.#{subfield} #{filter}")
  else
    where = "#{association.table_name}.#{subfield} #{operator}"
    where += " '#{value}'" if value
    @records = @records.where(where)
  end
end

#filter_param ⇒ Object 



73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
 
# File 'app/services/forest_liana/search_query_builder.rb', line 73

def filter_param
  if @params[:filterType] && @params[:filter]
    conditions = []
    @params[:filter].each do |field, values|
      next if association?(field)

      values.split(',').each do |value|
        operator, value = OperatorValueParser.parse(value)
        conditions << OperatorValueParser.get_condition(field, operator,
          value, @resource, @params[:timezone])
      end
    end

    operator = " #{@params[:filterType]} ".upcase
    @records = @records.where(conditions.join(operator))
  end

  @records
end

#has_many_association?(field) ⇒ Boolean

Returns:

  • (Boolean) 


98
99
100
101
102
103
 
# File 'app/services/forest_liana/search_query_builder.rb', line 98

def has_many_association?(field)
  field = field.split(':').first if field.include?(':')
  association = @resource.reflect_on_association(field.to_sym)

  [:has_many, :has_and_belongs_to_many].include?(association.try(:macro))
end

#has_many_field_filter(field, value) ⇒ Object 



123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
 
# File 'app/services/forest_liana/search_query_builder.rb', line 123

def has_many_field_filter(field, value)
  association = @resource.reflect_on_association(field.to_sym)
  return if association.blank?

  operator, value = OperatorValueParser.parse(value)

  @records = @records
    .select("#{@resource.table_name}.*,
            COUNT(#{association.table_name}.id)
            #{association.table_name}_has_many_count")
    .joins(ArelHelpers.join_association(@resource, association.name,
                                        Arel::Nodes::OuterJoin))
    .group("#{@resource.table_name}.id")
    .having("COUNT(#{association.table_name}) #{operator} #{value}")
end

#has_many_filter ⇒ Object 



105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
 
# File 'app/services/forest_liana/search_query_builder.rb', line 105

def has_many_filter
  if @params[:filter]
    @params[:filter].each do |field, values|
      next unless has_many_association?(field)

      values.split(',').each do |value|
        if field.include?(':')
          @records = has_many_subfield_filter(field, value)
        else
          @records = has_many_field_filter(field, value)
        end
      end
    end
  end

  @records
end

#has_many_subfield_filter(field, value) ⇒ Object 



139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
 
# File 'app/services/forest_liana/search_query_builder.rb', line 139

def has_many_subfield_filter(field, value)
  field, subfield = field.split(':')

  association = @resource.reflect_on_association(field.to_sym)
  return if association.blank?

  operator, value = OperatorValueParser.parse(value)

  @records = @records
    .select("#{@resource.table_name}.*,
            COUNT(#{association.table_name}.id)
            #{association.table_name}_has_many_count")
    .joins(ArelHelpers.join_association(@resource, association.name,
                                        Arel::Nodes::OuterJoin))
    .group("#{@resource.table_name}.id, #{association.table_name}.#{subfield}")
    .having("#{association.table_name}.#{subfield} #{operator} '#{value}'")
end

#perform ⇒ Object 



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
 
# File 'app/services/forest_liana/search_query_builder.rb', line 10

def perform
  @records = search_param
  @records = filter_param
  @records = has_many_filter
  @records = belongs_to_filter

  if @params[:search]
    schema.fields.each do |field|
      if field.try(:[], :search)
        @records = field[:search].call(@records, @params[:search])
      end
    end
  end

  @records
end

#schema ⇒ Object 



200
201
202
 
# File 'app/services/forest_liana/search_query_builder.rb', line 200

def schema
  ForestLiana.apimap.find {|x| x.name == @resource.table_name}
end

#search_param ⇒ Object 



27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
 
# File 'app/services/forest_liana/search_query_builder.rb', line 27

def search_param
  if @params[:search]
    conditions = []

    @resource.columns.each_with_index do |column, index|
      if column.name == 'id'
        if column.type == :integer
          conditions << "#{@resource.table_name}.id =
            #{@params[:search].to_i}"
        else
          conditions << "#{@resource.table_name}.id =
            '#{@params[:search]}'"
        end
      # NOTICE: Rails 3 do not have a defined_enums method
      elsif @resource.respond_to?(:defined_enums) &&
        @resource.defined_enums.has_key?(column.name) &&
        !@resource.defined_enums[column.name][@params[:search].downcase].nil?
        conditions << "\"#{@resource.table_name}\".\"#{column.name}\" =
          #{@resource.defined_enums[column.name][@params[:search].downcase]}"
      elsif !column.array && (column.type == :string ||
                              column.type == :text)
        conditions <<
          "LOWER(\"#{@resource.table_name}\".\"#{column.name}\") LIKE " +
          "'%#{@params[:search].downcase}%'"
      end
    end

    SchemaUtils.one_associations(@resource).map(&:name).each do |association|
      if @includes.include? association.to_sym
        resource = @resource.reflect_on_association(association.to_sym)
        resource.klass.columns.each do |column|
          if !column.array && (column.type == :string || column.type == :text)
            conditions <<
              "LOWER(\"#{resource.table_name}\".\"#{column.name}\") LIKE " +
              "'%#{@params[:search].downcase}%'"
          end
        end
      end
    end

    @records = @resource.where(conditions.join(' OR '))
  end

  @records
end