Class: Parse::Constraint::NotReadableByConstraint

Inherits:

Parse::Constraint

• Object
• Parse::Constraint
• Parse::Constraint::NotReadableByConstraint

Includes:

AclConstraintHelpers

Defined in:

lib/parse/query/constraints.rb

Overview

Note:

This constraint uses aggregation pipeline because Parse Server restricts direct queries on the internal _rperm field.

ACL NOT Readable By Constraint Query objects that are NOT readable by the specified users/roles. Useful for finding objects hidden from specific users.

Examples:

Find objects NOT readable by a user (hidden from them)

Song.query.where(:acl.not_readable_by => current_user)

Find objects NOT publicly readable

Song.query.where(:acl.not_readable_by => "*")
Song.query.where(:acl.not_readable_by => :public)

Instance Attribute Summary

Attributes inherited from Parse::Constraint

#operand, #operation, #operator, #value

Instance Method Summary

• #build ⇒ Object

Methods inherited from Parse::Constraint

#as_json, constraint_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 ⇒ Object

# File 'lib/parse/query/constraints.rb', line 3169

def build
  keys = normalize_acl_keys(@value)
  return { "__aggregation_pipeline" => [] } if keys.empty?

  # Find objects where _rperm does NOT contain any of the keys
  pipeline = [
    {
      "$match" => {
        "_rperm" => { "$nin" => keys },
      },
    },
  ]

  { "__aggregation_pipeline" => pipeline }
end