Module: Filterable::Models::Base::ModelClassMethods

Defined in:
lib/filterable-models/base.rb

Instance Method Summary collapse

Instance Method Details

#build_joins(current_joins = {}, filters = {}) ⇒ Object 



158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
 
# File 'lib/filterable-models/base.rb', line 158

def build_joins(current_joins = {}, filters = {})
  @self_object_name = self.name.underscore
  @self_table_name = @self_object_name.pluralize
  @self_filter_joins = []

  filters.map do |key, value|

    if value.is_a?(Hash)
      unless filters_are_empty(value)

        @self_object = self.new

        if @self_object.attributes.include?("#{key}_id")
          # belogns to
			@self_filter_joins += [key.to_sym]
        else
          @related_object = key.to_s.camelize.constantize.new

          if @related_object.attributes.include?("#{@self_object_name}_id")
            # has many - need to figure out how to solve it for has one.
            @self_filter_joins += ["#{key.to_s.pluralize}".to_sym]
          elsif @self_object.methods.include?("#{key}_ids")
            # has and_belongs_to_many
            @self_filter_joins += ["#{key.to_s.pluralize}".to_sym]
          end

        end
      end
    end

  end

  if @self_filter_joins.size > 0
    current_joins ||= []
    current_joins += @self_filter_joins
  end

  current_joins
end

#fields_per_column ⇒ Object 



213
214
215
 
# File 'lib/filterable-models/base.rb', line 213

def fields_per_column
  @fields_per_column ||= 5
end

#filter(filters = {}) ⇒ Object 



54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
 
# File 'lib/filterable-models/base.rb', line 54

def filter(filters = {})
  filters ||= {}
  filters = filters[self.to_s.underscore] ||= {}
  @filter_conditions = []
  @filter_conditions_values = []
  @current_joins = []

  keys = []

  filters.map do |key, value|

    unless value.blank?

      if value.is_a?(Hash)
        value.keys.collect{|k| k.to_s}.sort.each do |v_key|
          v_key = v_key.to_sym
          v_value = value[v_key]

          keys << "#{key.to_s.pluralize}.#{v_key}".to_sym
        end
        @current_joins = build_joins(@current_joins, filters)
      else
        keys << key.to_sym
      end

      keys.each do |key|

        if key.to_s =~ /_from/
          key = key.to_s.gsub("_from", "").to_sym
        elsif key.to_s =~ /_to/
          key = key.to_s.gsub("_to", "").to_sym
        end

        if @filterable.has_key?(key)
          filter_type = @filterable[key]

          # related object attribute
          if key.to_s =~ /\./
            v_keys = key.to_s.split(".")
            if filter_type =~ /_range/
              value_from  = filters[v_keys[0].singularize.to_sym]["#{v_keys[1]}_from".to_sym]
              value_to    = filters[v_keys[0].singularize.to_sym]["#{v_keys[1]}_to".to_sym]
            else
              value = filters[v_keys[0].singularize.to_sym][v_keys[1].to_sym]
            end
          else
            if filter_type =~ /_range/
              value_from  = filters["#{key}_from".to_sym]
              value_to    = filters["#{key}_to".to_sym]
            else
              value = filters[key]
            end
          end

          unless value.blank?
            if value == 'false'
              value = false
            end

            if value == 'true'
              value = true
            end

				compare_key = key.to_s
				unless key.to_s =~ /\./
					compare_key = "#{self.name.to_s.tableize}.#{key.to_s}"
				end
            case filter_type
            when "string"
              @filter_conditions << "#{compare_key} LIKE ?"
              @filter_conditions_values << "%#{value}%"
            when "exact_string"
              @filter_conditions << "#{compare_key} = ?"
              @filter_conditions_values << value
            when "date_range", "float_range"
              if value_from != "" && value_to != ""
                @filter_conditions << "(#{compare_key} >= ? and #{compare_key} <= ?)"
                @filter_conditions_values << value_from
                @filter_conditions_values << value_to
              elsif value_from != ""
                @filter_conditions << "#{compare_key} >= ?"
                @filter_conditions_values << value_from
              elsif value_to != ""
                @filter_conditions << "#{compare_key} <= ?"
                @filter_conditions_values << value_to                      
              end
            when "drop_down"
              @filter_conditions << "#{compare_key} = ?"
              @filter_conditions_values << value
            end
          end
        end
      end
    end
  end

  filter_scope = where([@filter_conditions.join(" AND ")] + @filter_conditions_values).group("#{self.name.tableize}.id")
  if @current_joins.any?
    filter_scope = filter_scope.joins(@current_joins)
  end
  
  filter_scope
end

#filter_fields_per_column(fields_per_column = 5) ⇒ Object 



50
51
52
 
# File 'lib/filterable-models/base.rb', line 50

def filter_fields_per_column(fields_per_column = 5)
  @fields_per_column = fields_per_column
end

#filter_options ⇒ Object 



209
210
211
 
# File 'lib/filterable-models/base.rb', line 209

def filter_options
  @filter_options
end

#filter_options_for(attribute_name, options = []) ⇒ Object 



45
46
47
48
 
# File 'lib/filterable-models/base.rb', line 45

def filter_options_for(attribute_name, options = [])
  @filter_options ||= {}
  @filter_options[attribute_name] = options
end

#filterable ⇒ Object 



205
206
207
 
# File 'lib/filterable-models/base.rb', line 205

def filterable
  @filterable
end

#filters(filters) ⇒ Object 



13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
 
# File 'lib/filterable-models/base.rb', line 13

def filters(filters)
  @filters = {}
  @filterable = {}
  @sorted_filterable = []
  @filters = filters

  if filters.is_a?(Array)
    # Ruby 1.8 hash sorting is unpredictable, so we can use an array 
    # to take care of the order and make it behave as expected
    filters.each do |hash|
      prepare_filters(hash)
    end          
  else
    # Filters is a hash, so lets just move on
    prepare_filters(filters)
  end
end

#filters_are_empty(filters) ⇒ Object 



198
199
200
201
202
203
 
# File 'lib/filterable-models/base.rb', line 198

def filters_are_empty(filters)
  filters.map do |key, value|
    return false unless value.blank?
  end
  true
end

#filters_hash ⇒ Object 



217
218
219
 
# File 'lib/filterable-models/base.rb', line 217

def filters_hash
  @filters
end

#prepare_filters(hash) ⇒ Object 



31
32
33
34
35
36
37
38
39
40
41
42
43
 
# File 'lib/filterable-models/base.rb', line 31

def prepare_filters(hash)
  hash.map do |key, value| 
    if value.is_a?(Hash)
      value.map do |v_key, v_value|
        @filterable["#{key.to_s.pluralize}.#{v_key}".to_sym] = v_value
        @sorted_filterable << {"#{key.to_s.pluralize}.#{v_key}".to_sym => v_value}
      end
    else
      @filterable[key] = value
        @sorted_filterable << {key => value}            
    end
  end
end

#sorted_filterable ⇒ Object 



221
222
223
 
# File 'lib/filterable-models/base.rb', line 221

def sorted_filterable
  @sorted_filterable
end