Class: CourseCategory

Inherits:
ApplicationRecord show all
Includes:
Toggleable
Defined in:
app/models/course_category.rb

Constant Summary collapse

PRIORITY_RANGE = 
(1..500)
NAME_LIMIT = 
50
SLUG_LIMIT = 
50
SLUG_PATTERN = 
/\A[a-z][-0-9a-z]*[0-9a-z]\z/i
SLUG_PATTERN_HTML = 
'^[a-zA-Z][-0-9a-zA-Z]*[0-9a-zA-Z]$'

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.creation_parameters ⇒ Object 



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# File 'app/models/course_category.rb', line 43

def self.creation_parameters
  entity_parameters + i(parent_id)
end

.entity_parameters ⇒ Object 



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# File 'app/models/course_category.rb', line 39

def self.entity_parameters
  i(image name slug priority visible)
end

Instance Method Details

#branch_ids ⇒ Array<Integer>

Returns:

  • (Array<Integer>) 


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# File 'app/models/course_category.rb', line 60

def branch_ids
  parents_cache.split(',').map(&:to_i).reject { |i| i < 1 }.uniq + [id]
end

#cache_children! ⇒ Object 



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# File 'app/models/course_category.rb', line 88

def cache_children!
  child_categories.order('id asc').each do |child|
    self.children_cache += [child.id] + child.children_cache
  end
  save!
end

#cache_parents! ⇒ Object 



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# File 'app/models/course_category.rb', line 82

def cache_parents!
  return if parent.nil?
  self.parents_cache = "#{parent.parents_cache},#{parent_id}".gsub(/\A,/, '')
  save!
end

#can_be_deleted? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/course_category.rb', line 95

def can_be_deleted?
  child_categories.count < 1
end

#change_priority(delta) ⇒ Object

Parameters:

  • delta (Integer) 


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# File 'app/models/course_category.rb', line 105

def change_priority(delta)
  new_priority = priority + delta
  criteria     = { parent_id: parent_id, priority: new_priority }
  adjacent     = self.class.find_by(criteria)
  if adjacent.is_a?(self.class) && (adjacent.id != id)
    adjacent.update!(priority: priority)
  end
  self.update(priority: new_priority)

  self.class.for_tree(parent_id).map { |e| [e.id, e.priority] }.to_h
end

#course?(course) ⇒ Boolean

Parameters:

Returns:

  • (Boolean) 


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# File 'app/models/course_category.rb', line 100

def course?(course)
  course.course_category == self
end

#depth ⇒ Object 



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# File 'app/models/course_category.rb', line 51

def depth
  parent_ids.count
end

#full_title ⇒ Object 



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# File 'app/models/course_category.rb', line 47

def full_title
  (parents.map { |parent| parent.name } + [name]).join ' / '
end

#image_alt_text ⇒ Object 



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# File 'app/models/course_category.rb', line 69

def image_alt_text
  name
end

#parent_ids ⇒ Object 



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# File 'app/models/course_category.rb', line 55

def parent_ids
  parents_cache.split(',').compact
end

#parents ⇒ Object 



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# File 'app/models/course_category.rb', line 77

def parents
  return [] if parents_cache.blank?
  CourseCategory.where(id: parent_ids).order('id asc')
end

#subbranch_ids ⇒ Array<Integer>

Returns:

  • (Array<Integer>) 


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# File 'app/models/course_category.rb', line 65

def subbranch_ids
  [id] + children_cache
end

#title ⇒ Object 



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# File 'app/models/course_category.rb', line 73

def title
  name
end