Module: Datagrid::Core::InstanceMethods

Defined in:
lib/datagrid/core.rb

Overview

ClassMethods

Instance Method Summary collapse

Instance Method Details

#==(other) ⇒ Object 



226
227
228
229
230
 
# File 'lib/datagrid/core.rb', line 226

def ==(other)
  self.class == other.class &&
    attributes == other.attributes &&
    scope == other.scope
end

#[](attribute) ⇒ Object

Alias for send method



136
137
138
 
# File 'lib/datagrid/core.rb', line 136

def [](attribute)
  self.send(attribute)
end

#[]=(attribute, value) ⇒ Object 



140
141
142
 
# File 'lib/datagrid/core.rb', line 140

def []=(attribute, value)
  self.send(:"#{attribute}=", value)
end

#as_query ⇒ Object

Returns serializable query arguments skipping all nil values



166
167
168
169
170
171
172
 
# File 'lib/datagrid/core.rb', line 166

def as_query
  attributes = self.attributes.clone
  attributes.each do |key, value|
    attributes.delete(key) if value.nil?
  end
  attributes
end

#assets ⇒ Object

Returns a scope(e.g ActiveRecord::Relation) with all applied filters



145
146
147
 
# File 'lib/datagrid/core.rb', line 145

def assets
  driver.to_scope(scope)
end

#attributes ⇒ Object

Returns a hash of grid attributes including filter values and ordering values



127
128
129
130
131
132
133
 
# File 'lib/datagrid/core.rb', line 127

def attributes
  result = {}
  self.datagrid_attributes.each do |name|
    result[name] = self[name]
  end
  result
end

#attributes=(attributes) ⇒ Object

Updates datagrid attributes with a passed hash argument



151
152
153
154
155
156
157
158
159
160
161
162
163
 
# File 'lib/datagrid/core.rb', line 151

def attributes=(attributes)
  if respond_to?(:assign_attributes)
    if !forbidden_attributes_protection && attributes.respond_to?(:permit!)
      attributes.permit!
    end
    assign_attributes(attributes)
  else
    attributes.each do |name, value|
      self[name] = value
    end
    self
  end
end

#check_scope_defined!(message = nil) ⇒ Object

:nodoc:



215
216
217
 
# File 'lib/datagrid/core.rb', line 215

def check_scope_defined!(message = nil) #:nodoc:
  self.class.send :check_scope_defined!, message
end

#driver ⇒ Object

:nodoc:



211
212
213
 
# File 'lib/datagrid/core.rb', line 211

def driver #:nodoc:
  self.class.driver
end

#initialize(attributes = nil, &block) ⇒ Object 



112
113
114
115
116
117
118
119
120
121
122
123
 
# File 'lib/datagrid/core.rb', line 112

def initialize(attributes = nil, &block)
  super()

  if attributes
    self.attributes = attributes
  end

  instance_eval(&dynamic_block) if dynamic_block
  if block_given?
    self.scope(&block)
  end
end

#inspect ⇒ Object 



219
220
221
222
223
224
 
# File 'lib/datagrid/core.rb', line 219

def inspect
  attrs = attributes.map do |key, value|
    "#{key}: #{value.inspect}"
  end.join(", ")
  "#<#{self.class} #{attrs}>"
end

#redefined_scope? ⇒ Boolean

Returns true if the scope was redefined for this instance of grid object

Returns:

  • (Boolean) 


207
208
209
 
# File 'lib/datagrid/core.rb', line 207

def redefined_scope?
  self.class.scope_value != scope_value
end

#reset_scope ⇒ Object

Resets current instance scope to default scope defined in a class



202
203
204
 
# File 'lib/datagrid/core.rb', line 202

def reset_scope
  self.scope_value = self.class.scope_value
end

#scope(&block) ⇒ Object

Redefines scope at instance level

class MyGrid
  scope { Article.order('created_at desc') }
end

grid = MyGrid.new
grid.scope do |scope|
  scope.where(:author_id => current_user.id)
end
grid.assets
    # => SELECT * FROM articles WHERE author_id = ?
    #    ORDER BY created_at desc



188
189
190
191
192
193
194
195
196
197
198
199
 
# File 'lib/datagrid/core.rb', line 188

def scope(&block)
  if block_given?
    current_scope = scope
    self.scope_value = proc {
      Datagrid::Utils.apply_args(current_scope, &block)
    }
    self
  else
    check_scope_defined!
    scope_value.call
  end
end