Class: Course

Inherits:
ApplicationRecord show all
Includes:
HasOwner, Toggleable
Defined in:
app/models/course.rb

Constant Summary collapse

PER_PAGE = 
24
DESCRIPTION_LIMIT = 
50000
DURATION_LIMIT = 
50
LEAD_LIMIT = 
1000
META_LIMIT = 
255
PRIORITY_RANGE = 
(1..999)
SLUG_LIMIT = 
250
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]$'
TITLE_LIMIT = 
250

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.entity_parameters ⇒ Object 



65
66
67
68
69
70
71
72
 
# File 'app/models/course.rb', line 65

def self.entity_parameters
  texts      = %i(title subtitle slug lead description duration)
  decoration = %i(price special_price special_price_end image image_alt_text)
  meta_texts = %i(meta_title meta_keywords meta_description metadata)
  meta_data  = %i(course_category_id priority visible highlight online)

  texts + decoration + meta_texts + meta_data
end

.page_for_administration(page = 1) ⇒ Object

Parameters:

  • page (Integer) (defaults to: 1) 


56
57
58
 
# File 'app/models/course.rb', line 56

def self.page_for_administration(page = 1)
  ordered_by_priority.page(page).per(PER_PAGE)
end

.page_for_visitors(page = 1) ⇒ Object

Parameters:

  • page (Integer) (defaults to: 1) 


61
62
63
 
# File 'app/models/course.rb', line 61

def self.page_for_visitors(page = 1)
  list_for_visitors.page(page).per(PER_PAGE)
end

Instance Method Details

#change_priority(delta) ⇒ Object

Parameters:

  • delta (Integer) 


85
86
87
88
89
90
91
92
93
94
95
 
# File 'app/models/course.rb', line 85

def change_priority(delta)
  new_priority = priority + delta
  criteria     = { course_category_id: course_category_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(course_category_id).map { |e| [e.id, e.priority] }.to_h
end

#editable_by?(user) ⇒ Boolean

Parameters:

  • user (User)

Returns:

  • (Boolean) 


75
76
77
 
# File 'app/models/course.rb', line 75

def editable_by?(user)
  owned_by?(user) || UserPrivilege.user_has_privilege?(user, :chief_course_manager)
end

#lockable_by?(user) ⇒ Boolean

Parameters:

  • user (User)

Returns:

  • (Boolean) 


80
81
82
 
# File 'app/models/course.rb', line 80

def lockable_by?(user)
  UserPrivilege.user_has_privilege?(user, :chief_course_manager)
end