Class: Spider::Model::ModelHash
- Defined in:
- lib/spiderfw/model/model_hash.rb
Overview
The ModelHash is a specialized hash for models. It is subclassed by Condition and Request. It provides two functions:
-
when given a BaseModel instance as a value, it will unwrap it setting its element-value pairs
-
if the key is a dotted string, will split it and create sub-hashes.
Example:
cat = Cat.new(:name => 'Kitty', :color => 'black')
mh[:test] = cat
=> {:test => {:name => 'Kitty', :color => 'black}}
mh['test.name'] = 'Devilish Kitty'
=> {:test => {:name => 'Devilish Kitty', :color => 'black'}}
Direct Known Subclasses
Instance Method Summary collapse
-
#[](key) ⇒ Object
Value retrieval.
-
#[]=(key, val) ⇒ Object
Value assignment.
-
#get_deep_obj ⇒ ModelHash
Returns a new instance when needed by an assignement.
-
#initialize(hash = nil) ⇒ ModelHash
constructor
A new instance of ModelHash.
-
#modelhash_orig_set ⇒ Object
Original hash value assignment.
Constructor Details
#initialize(hash = nil) ⇒ ModelHash
Returns a new instance of ModelHash.
18 19 20 21 |
# File 'lib/spiderfw/model/model_hash.rb', line 18 def initialize(hash=nil) super() merge!(hash) if (hash && hash.is_a?(Hash)) end |
Instance Method Details
#[](key) ⇒ Object
Value retrieval
54 55 56 57 58 |
# File 'lib/spiderfw/model/model_hash.rb', line 54 def [](key) # TODO: deep key = key.name if key.is_a?(Element) super(key.to_sym) end |
#[]=(key, val) ⇒ Object
Value assignment
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 |
# File 'lib/spiderfw/model/model_hash.rb', line 32 def []=(key, val) if (val.is_a?(BaseModel)) n = self.class.new val.each_val do |el, v| n[el] = v end val = n end key = key.name if key.is_a?(Element) if key.is_a?(String) parts = key.split('.', 2) return super(key.to_sym, val) unless parts[1] parts[0] = parts[0].to_sym self[parts[0]] = get_deep_obj unless self[parts[0]].is_a?(self.class) self[parts[0]][parts[1]] = val else super(key, val) end end |
#get_deep_obj ⇒ ModelHash
Returns a new instance when needed by an assignement. May be overridden by subclasses.
25 26 27 |
# File 'lib/spiderfw/model/model_hash.rb', line 25 def get_deep_obj return self.class.new end |
#modelhash_orig_set ⇒ Object
Original hash value assignment
15 |
# File 'lib/spiderfw/model/model_hash.rb', line 15 alias :modelhash_orig_set :[]= |