Class: Parse::Constraint::RejectionConstraint
- Inherits:
- Parse::Constraint
- Object
- Parse::Constraint
- Parse::Constraint::RejectionConstraint
- Defined in:
- lib/parse/query/constraints.rb
Overview
Equivalent to the `$dontSelect` Parse query operation. Requires that a field's value not match a value for a key in the result of a different query.
q.where :field.reject => { key: :other_field, query: query }
value = { key: 'city', query: Artist.where(:fan_count.gt => 50) }
q.where :hometown.reject => value
# if the local field is the same name as the foreign table field, you can omit hash
# assumes key: 'city'
q.where :city.reject => Artist.where(:fan_count.gt => 50)
Instance Attribute Summary
Attributes inherited from Parse::Constraint
#operand, #operation, #operator, #value
Instance Method Summary collapse
- #build ⇒ Hash
The compiled constraint.
- #dont_select ⇒ RejectionConstraint
A registered method on a symbol to create the constraint.
- #reject ⇒ RejectionConstraint
Alias for #dont_select.
Methods inherited from Parse::Constraint
#as_json, contraint_keyword, create, #formatted_value, formatted_value, #initialize, #key, #precedence, register, #to_s
Constructor Details
This class inherits a constructor from Parse::Constraint
Instance Method Details
#build ⇒ Hash
Returns the compiled constraint.
462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 | # File 'lib/parse/query/constraints.rb', line 462 def build # if it's a hash, then it should be {:key=>"objectId", :query=>[]} remote_field_name = @operation.operand query = nil if @value.is_a?(Hash) res = @value.symbolize_keys remote_field_name = res[:key] || remote_field_name query = res[:query] unless query.is_a?(Parse::Query) raise ArgumentError, "Invalid Parse::Query object provided in :query field of value: #{@operation.operand}.#{$dontSelect} => #{@value}" end query = query.compile(encode: false, includeClassName: true) elsif @value.is_a?(Parse::Query) # if its a query, then assume dontSelect key is the same name as operand. query = @value.compile(encode: false, includeClassName: true) else raise ArgumentError, "Invalid `:reject` query constraint. It should follow the format: :field.reject => { key: 'key', query: '<Parse::Query>' }" end { @operation.operand => { :$dontSelect => { key: remote_field_name, query: query } } } end |
#dont_select ⇒ RejectionConstraint
A registered method on a symbol to create the constraint. Maps to Parse operator “$dontSelect”.
# File 'lib/parse/query/constraints.rb', line 448
|
#reject ⇒ RejectionConstraint
Alias for #dont_select
457 | # File 'lib/parse/query/constraints.rb', line 457 contraint_keyword :$dontSelect |