Class: AzaharaSchema::Schema

Inherits:
Object
  • Object
show all
Defined in:
lib/azahara_schema/schema.rb

Direct Known Subclasses

ModelSchema

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(model, **attributes) ⇒ Schema

Returns a new instance of Schema.



70
71
72
73
74
75
76
77
 
# File 'lib/azahara_schema/schema.rb', line 70

def initialize(model, **attributes)
  @model = model
  @association = attributes[:association]
  @parent_schema = attributes[:parent_schema]
  @column_names = attributes[:columns]
  @enabled_outputs = attributes[:outputs] || default_outputs
  @nested_relations_depth = attributes[:relations_depth]
end

Instance Attribute Details

#association ⇒ Object

Returns the value of attribute association.



66
67
68
 
# File 'lib/azahara_schema/schema.rb', line 66

def association
  @association
end

#default_scope ⇒ Object

Returns the value of attribute default_scope.



67
68
69
 
# File 'lib/azahara_schema/schema.rb', line 67

def default_scope
  @default_scope
end

#enabled_outputs ⇒ Object

Returns the value of attribute enabled_outputs.



66
67
68
 
# File 'lib/azahara_schema/schema.rb', line 66

def enabled_outputs
  @enabled_outputs
end

#limit ⇒ Object

Returns the value of attribute limit.



68
69
70
 
# File 'lib/azahara_schema/schema.rb', line 68

def limit
  @limit
end

#model ⇒ Object

Returns the value of attribute model.



66
67
68
 
# File 'lib/azahara_schema/schema.rb', line 66

def model
  @model
end

#offset ⇒ Object

Returns the value of attribute offset.



68
69
70
 
# File 'lib/azahara_schema/schema.rb', line 68

def offset
  @offset
end

#parent_schema ⇒ Object

Returns the value of attribute parent_schema.



66
67
68
 
# File 'lib/azahara_schema/schema.rb', line 66

def parent_schema
  @parent_schema
end

#search_query ⇒ Object

Returns the value of attribute search_query.



67
68
69
 
# File 'lib/azahara_schema/schema.rb', line 67

def search_query
  @search_query
end

Class Method Details

.attribute(model, name, attr_type = nil) ⇒ Object 



44
45
46
47
 
# File 'lib/azahara_schema/schema.rb', line 44

def self.attribute(model, name, attr_type=nil)
  attr_type ||= attribute_type(model, name)
  Attribute.new(model, name, attr_type)
end

.attribute_for_column(model, col, attr_type = nil) ⇒ Object 



49
50
51
 
# File 'lib/azahara_schema/schema.rb', line 49

def self.attribute_for_column(model, col, attr_type=nil)
  attribute(model, col.name, attr_type || attribute_type(model, col.name, col) )
end

.attribute_type(model, name, col = nil) ⇒ Object 



35
36
37
38
39
40
41
42
 
# File 'lib/azahara_schema/schema.rb', line 35

def self.attribute_type(model, name, col=nil)
  col ||= model.columns_hash[name.to_s]
  if model.defined_enums[col.name]
    'list'
  else
    col && col.type
  end
end

.enabled_filters(*filter_names) ⇒ Object 



53
54
55
56
 
# File 'lib/azahara_schema/schema.rb', line 53

def self.enabled_filters(*filter_names)
  @enabled_filters = filter_names if filter_names.any?
  @enabled_filters ||= []
end

.filter_operators(filter, operators) ⇒ Object 



62
63
64
 
# File 'lib/azahara_schema/schema.rb', line 62

def self.filter_operators(filter, operators)
  operators_for_filters[filter] = operators
end

.operators_for_filters ⇒ Object 



58
59
60
 
# File 'lib/azahara_schema/schema.rb', line 58

def self.operators_for_filters
  @operators_for_filters ||= {}
end

.schema_class_for(klass) ⇒ Object 



6
7
8
9
10
11
12
13
14
15
16
17
 
# File 'lib/azahara_schema/schema.rb', line 6

def self.schema_class_for(klass)
  klasses = [klass]
  while klass != klass.base_class
    klass = klass.superclass
    klasses << klass
  end
  klasses.each do |kls|
    schema_klass = "#{kls.name}Schema".safe_constantize
    return schema_klass if schema_klass
  end
  AzaharaSchema::Schema
end

.schema_for(klass, **attributes) ⇒ Object 



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
# File 'lib/azahara_schema/schema.rb', line 19

def self.schema_for(klass, **attributes)
  model = klass
  klasses = [klass]
  while klass != klass.base_class
    klass = klass.superclass
    klasses << klass
  end
  klasses.each do |kls|
    schema_klass = "#{kls.name}Schema".safe_constantize
    if schema_klass
      return kls.try(:abstract_class?) ? schema_klass.new(model, **attributes) : schema_klass.new(**attributes)
    end
  end
  AzaharaSchema::Schema.new(model, **attributes)
end

Instance Method Details

#add_filter(name, operator, values) ⇒ Object 



147
148
149
150
 
# File 'lib/azahara_schema/schema.rb', line 147

def add_filter(name, operator, values)
  raise 'filter ('+name+') is not defined!' unless available_filters.key?(name)
  filters[name] = { o: operator, v: values }
end

#add_short_filter(name, str) ⇒ Object

ACCESSORS



137
138
139
140
141
142
143
144
145
 
# File 'lib/azahara_schema/schema.rb', line 137

def add_short_filter(name, str)
  attrs = str.split('|')
  if attrs.size == 2
    operator, values = attrs
  elsif attrs.size == 1
    operator, values = '=', attrs.first
  end
  add_filter(name, operator, values.split('\\'))
end

#add_sort(name, order = :asc) ⇒ Object 



152
153
154
 
# File 'lib/azahara_schema/schema.rb', line 152

def add_sort(name, order=:asc)
  sort[name] = order
end

#as_json(options = {}) ⇒ Object 



322
323
324
325
 
# File 'lib/azahara_schema/schema.rb', line 322

def as_json(options={})
  build_json_options!(options)
  entities.collect{|entity| entity_as_json(entity, options) }
end

#association_path ⇒ Object 



213
214
215
 
# File 'lib/azahara_schema/schema.rb', line 213

def association_path
  @association_path ||= parent_schema ? ( parent_schema.association_path + [association.name] ) : [model.model_name.element.to_sym]
end

#attribute(name) ⇒ Object 



170
171
172
 
# File 'lib/azahara_schema/schema.rb', line 170

def attribute(name)
  available_attributes.detect{|att| att.name == name}
end

#attribute_for_column(col) ⇒ Object 



229
230
231
 
# File 'lib/azahara_schema/schema.rb', line 229

def attribute_for_column(col)
  self.class.attribute_for_column(model, col)
end

#available_associations ⇒ Object 



217
218
219
220
221
222
223
224
225
226
227
 
# File 'lib/azahara_schema/schema.rb', line 217

def available_associations
  return [] unless include_associated_attributes?
  @available_associations ||= model.reflect_on_all_associations.select do |association|
    !association.options[:polymorphic] &&
      association.klass != model &&
      !association_path.include?( association.name.to_s.singularize.to_sym ) &&
      !association_path.include?( association.name.to_s.pluralize.to_sym )
  end.collect do |association|
    AzaharaSchema::Schema.schema_for(association.klass, parent_schema: self, association: association, relations_depth: nested_relations_depth.try(:-, 1))
  end
end

#available_attributes ⇒ Object 



174
175
176
177
178
179
180
 
# File 'lib/azahara_schema/schema.rb', line 174

def available_attributes
  unless @available_attributes
    initialize_available_attributes
    @available_attributes.each{|at| at.table_alias = Array(association_path[1..-1]).collect(&:to_s).join('_').presence }
  end
  @available_attributes
end

#available_attributes_hash ⇒ Object 



182
183
184
 
# File 'lib/azahara_schema/schema.rb', line 182

def available_attributes_hash
  available_attributes.inject({}){|obj, aa| obj[aa.name] = aa; obj }
end

#available_columns ⇒ Object 



186
187
188
 
# File 'lib/azahara_schema/schema.rb', line 186

def available_columns
  @available_columns ||= available_attributes.select{|att| att.column? }
end

#available_filters ⇒ Object 



205
206
207
 
# File 'lib/azahara_schema/schema.rb', line 205

def available_filters
  @available_filters ||= available_attributes_hash
end

#base_scope ⇒ Object 



256
257
258
 
# File 'lib/azahara_schema/schema.rb', line 256

def base_scope
  model.all
end

#build_json_options!(options = {}) ⇒ Object 



298
299
300
301
 
# File 'lib/azahara_schema/schema.rb', line 298

def build_json_options!(options={})
  columns.each{|col| col.build_json_options!(options) }
  options
end

#collapsable_filters ⇒ Object 



378
379
380
 
# File 'lib/azahara_schema/schema.rb', line 378

def collapsable_filters
  available_filters
end

#column_names ⇒ Object 



92
93
94
 
# File 'lib/azahara_schema/schema.rb', line 92

def column_names
  @column_names ||= default_columns
end

#column_names=(values) ⇒ Object 



87
88
89
90
 
# File 'lib/azahara_schema/schema.rb', line 87

def column_names=(values)
  @column_names = values
  @columns = nil
end

#columns ⇒ Object 



96
97
98
 
# File 'lib/azahara_schema/schema.rb', line 96

def columns
  @columns ||= available_attributes_hash.slice(*column_names).values
end

#default_columns ⇒ Object 



114
115
116
 
# File 'lib/azahara_schema/schema.rb', line 114

def default_columns
  [main_attribute_name]
end

#default_outputs ⇒ Object

DEFAULTS



110
111
112
 
# File 'lib/azahara_schema/schema.rb', line 110

def default_outputs
  [AzaharaSchema::Outputs.registered_outputs.keys.first].compact
end

#default_sort ⇒ Object 



118
119
120
 
# File 'lib/azahara_schema/schema.rb', line 118

def default_sort
  {}
end

#disabled_filters ⇒ Object 



194
195
196
 
# File 'lib/azahara_schema/schema.rb', line 194

def disabled_filters
  []
end

#enabled_filter_names ⇒ Object 



198
199
200
201
202
203
 
# File 'lib/azahara_schema/schema.rb', line 198

def enabled_filter_names
  names = self.class.enabled_filters if self.class.enabled_filters.any?
  names ||= available_attributes_hash.keys
  names &= enabled_filters if enabled_filters
  names -= disabled_filters
end

#enabled_filters ⇒ Object 



190
191
192
 
# File 'lib/azahara_schema/schema.rb', line 190

def enabled_filters

end

#entities ⇒ Object 



284
285
286
287
288
289
290
291
292
293
294
295
296
 
# File 'lib/azahara_schema/schema.rb', line 284

def entities
  scope = filtered_scope
  columns.each do |col|
    scope = col.add_preload(scope)
  end
  sort.keys.reverse.each do |name|
    att = attribute(name)
    scope = att.add_sort(scope, sort[name]) if att
  end
  scope = scope.offset(offset) if offset
  scope = scope.limit(limit) if limit
  scope
end

#entity_as_json(entity, options = nil) ⇒ Object 



303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
 
# File 'lib/azahara_schema/schema.rb', line 303

def entity_as_json(entity, options=nil)
  attr_hash = entity.as_json(options)
  # TODO serializable_add_includes(options) do |association, records, opts|
  columns.each do |col|
    col_sub_hash = attr_hash
    sub_col = col
    while sub_col.is_a?(AzaharaSchema::AssociationAttribute)
      col_sub_hash = (col_sub_hash[sub_col.association.name.to_s] ||= {})
      sub_col = sub_col.attribute
    end
    if col.type == 'love'
      col_sub_hash[sub_col.name] = sub_col.available_values.detect{|l, v| v == col_sub_hash[sub_col.name] }.try(:[], 0)
    else
      col_sub_hash[sub_col.name] = col.value(entity)
    end
  end
  attr_hash
end

#entity_count ⇒ Object 



280
281
282
 
# File 'lib/azahara_schema/schema.rb', line 280

def entity_count
  filtered_scope.count
end

#entity_scope(scope = base_scope) ⇒ Object 



260
261
262
263
264
 
# File 'lib/azahara_schema/schema.rb', line 260

def entity_scope(scope=base_scope)
  scope = scope.visible if scope.respond_to?(:visible)
  scope = scope.send(self.default_scope) if self.default_scope
  scope
end

#filtered_scope ⇒ Object 



266
267
268
269
270
271
272
273
274
275
276
277
278
 
# File 'lib/azahara_schema/schema.rb', line 266

def filtered_scope
  scope = entity_scope
  filters.each do |name, attrs|
    scope = available_filters[name].add_statement(scope, attrs[:o], attrs[:v])
  end
  if (tokens = tokenize_search_query)
    searchable_attributes.each{|a| scope = a.add_join(scope) }
    arl = searchable_attributes[0].arel_statement('~', tokens) if searchable_attributes.any?
    Array(searchable_attributes[1..-1]).each{|att| arl = arl.or( att.arel_statement('~', tokens) ) }
    scope = scope.where(arl)
  end
  scope
end

#filters ⇒ Object 



100
101
102
 
# File 'lib/azahara_schema/schema.rb', line 100

def filters
  @filters ||= {}
end

#from_params(params) ⇒ Object

serialization



329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
 
# File 'lib/azahara_schema/schema.rb', line 329

def from_params(params)
  if params[:f]
    if params.class == ActionController::Parameters
      filter_params = params[:f].permit(available_filters.keys + [available_filters.keys.inject({}){|o,name| o[name] = []; o }]).to_h
    else
      filter_params = params[:f].slice(available_filters.keys + [available_filters.keys.inject({}){|o,name| o[name] = []; o }]).to_h
    end
    filter_params.each do |name, filter_value|
      next if filter_value.blank?
      if filter_value.is_a?(Array)
        add_filter(name, '=', filter_value)
      else
        add_short_filter(name, filter_value)
      end
    end
  end
  if params[:c].is_a?(Array)
    self.column_names = params[:c].to_a
  end
  if params[:sort]
    @sort = nil
    params[:sort].each do |k, sort|
      add_sort(sort[:path], sort['desc'] == 'true' ? :desc : :asc )
    end
  end
  self.default_scope = params[:default_scope] if params[:default_scope]
  self.search_query = params[:q] unless params[:q].blank?
  self.offset = params[:offset] if params[:offset]
  self.limit = params[:limit] if params[:limit]
end

#include_associated_attributes? ⇒ Boolean

Returns:

  • (Boolean) 


131
132
133
 
# File 'lib/azahara_schema/schema.rb', line 131

def include_associated_attributes?
  nested_relations_depth > 0
end

#initialize_available_attributes ⇒ Object 



233
234
235
236
237
238
239
240
241
242
243
244
245
246
 
# File 'lib/azahara_schema/schema.rb', line 233

def initialize_available_attributes
  @available_attributes ||= []
  model.columns.each do |col|
    @available_attributes << attribute_for_column(col)
  end
  available_associations.each do |asoc_schema|
    asoc_schema.available_attributes.each do |asoc_attribute|
      next if asoc_attribute.is_a?(AggregationAttribute)
      added_attribute = AssociationAttribute.new(model, asoc_schema, asoc_attribute)
      @available_attributes << added_attribute
      @available_attributes << AggregationAttribute.new(model, added_attribute) if asoc_attribute.aggregable?
    end
  end
end

#inspect ⇒ Object 



79
80
81
 
# File 'lib/azahara_schema/schema.rb', line 79

def inspect
  to_s
end

#main_attribute_name ⇒ Object

just a dummy implementation



123
124
125
 
# File 'lib/azahara_schema/schema.rb', line 123

def main_attribute_name
  available_attributes.detect{|att| att.name != 'id' }.name
end

#nested_relations_depth ⇒ Object 



127
128
129
 
# File 'lib/azahara_schema/schema.rb', line 127

def nested_relations_depth
  @nested_relations_depth || 4
end

#operator_for(fname) ⇒ Object 



156
157
158
 
# File 'lib/azahara_schema/schema.rb', line 156

def operator_for(fname)
  filters[fname] && filters[fname][:o]
end

#operators_for(filter_name) ⇒ Object 



164
165
166
167
168
 
# File 'lib/azahara_schema/schema.rb', line 164

def operators_for(filter_name)
  operators = available_filters[filter_name] && available_filters[filter_name].available_operators
  operators &= self.class.operators_for_filters[filter_name] if operators && self.class.operators_for_filters[filter_name]
  operators
end

#outputs ⇒ Object 



248
249
250
 
# File 'lib/azahara_schema/schema.rb', line 248

def outputs
  Outputs.new(self)
end

#searchable_attributes ⇒ Object 



83
84
85
 
# File 'lib/azahara_schema/schema.rb', line 83

def searchable_attributes
  @searchable_attributes ||= available_attributes.select{|a| a.searchable? }
end

#sort ⇒ Object 



104
105
106
 
# File 'lib/azahara_schema/schema.rb', line 104

def sort
  @sort ||= ActiveSupport::OrderedHash.new.merge!(default_sort)
end

#to_param ⇒ Object 



360
361
362
363
364
365
366
367
368
369
370
371
372
 
# File 'lib/azahara_schema/schema.rb', line 360

def to_param
  params = {}
  params[:f] = {}
  filters.each do |fname, attrs|
    params[:f][fname] = "#{attrs[:o]}|#{Array(attrs[:v]).collect{|v| v.to_s}.join('\\')}"
  end
  params[:default_scope] = default_scope if default_scope
  params[:c] = column_names
  params[:q] = search_query if params[:q]
  params[:offset] = offset
  params[:limit] = limit
  params
end

#tokenize_search_query(query = search_query) ⇒ Object 



252
253
254
 
# File 'lib/azahara_schema/schema.rb', line 252

def tokenize_search_query(query=search_query)
  query.split if query
end

#uncollapsable_filters ⇒ Object 



374
375
376
 
# File 'lib/azahara_schema/schema.rb', line 374

def uncollapsable_filters
  {}
end

#user_available_filters ⇒ Object 



209
210
211
 
# File 'lib/azahara_schema/schema.rb', line 209

def user_available_filters
  available_filters.slice(*enabled_filter_names)
end

#value_for(fname) ⇒ Object 



160
161
162
 
# File 'lib/azahara_schema/schema.rb', line 160

def value_for(fname)
  filters[fname] && filters[fname][:v]
end