Trying to import JSON string in to database using Rails - mysql

Question

Exercise.rb - Model
def self.import!
#request = Net::HTTP.get(URI.parse('https://example.com/output'))
#exercises = JSON.parse(#request)
#exercises.each do |e|
existing = Exercise.exists?(e)
unless existing === false
tmp = existing.first
end
e[:sections_attributes] = e.delete("sections")
e[:questions_attributes] = e.delete("questions")
e[:answers_attributes] = e.delete("answers")
record = Exercise.create(e)
puts "Record #{record["id"]} updated / created"
end
end
I'm getting the following error when I run the import:
(0.9ms) COMMIT
TypeError: no implicit conversion of String into Integer
My gut feeling is because every item in there is a String. How do I go about converting the items or get the insert to ignore column types?
Excerpt of #request
> `[2] pry(Exercise)> e
=> {"publish_date"=>"2013-12-11",
"grade_id"=>2,
"exercise_type"=>3,
"week"=>1,
"content"=>"<hr />\r\n\r\nQuestions:\r\n\r\n",
"grammar_list"=>"",
"title_append"=>nil,
"sections"=>
[{"name"=>"Vocab",
"order"=>0,
"questions"=>
[{"question"=>"rgrthth",
"type"=>3,
"order"=>0,
"answers"=>[{"answer"=>"aa", "correct"=>true, "order"=>0}]},
{"question"=>"uh67jy7k",
"type"=>3,
"order"=>0,
"answers"=>[{"answer"=>"bb", "correct"=>true, "order"=>0}]},
{"question"=>"rgtdyjuyik",
"type"=>3,
"order"=>0,
"answers"=>[{"answer"=>"cc", "correct"=>true, "order"=>0}]}]}]}`
Output from updated code
2.1.0 :040 > Exercise.import!
(0.2ms) SELECT COUNT(*) FROM `exercises` WHERE `exercises`.`week` = 1 AND `exercises`.`exercise_type` = 3 AND `exercises`.`grade_id` = 2
From: /Users/pc-a/Sites/mailbox/app/models/exercise.rb # line 99 Exercise.import!:
92: def self.import!
93: #request = Net::HTTP.get(URI.parse('example.com/output'))
94: #exercises = JSON.parse(#request)
95:
96: #exercises.map(&:with_indifferent_access).each do |e|
97: next if Exercise.exists?(e[:week], e[:exercise_type], e[:grade_id])
98:
=> 99: binding.pry
100:
101:
102: e[:sections_attributes] = e.delete(:sections)
103: e[:sections_attributes].map! do |section_attributes|
104: section_attributes[:questions_attributes] = section_attributes.delete(:questions)
105: section_attributes[:questions_attributes].map! do |question_attributes|
106: question_attributes[:answers_attributes] = question_attributes.delete(:answers)
107: end
108: end
109:
110: binding.pry
111:
112: exercise = Exercise.new(e)
113: if exercise.save
114: puts "Exercise #{exercise.id} created!"
115: else
116: puts "Could not create Exercise: #{exercise.errors.full_messages.join('; ')}"
117: end
118: end
119: end
[1] pry(Exercise)> e
=> {"publish_date"=>"2013-12-11",
"grade_id"=>2,
"exercise_type"=>3,
"week"=>1,
"content"=>"<hr />\r\n\r\nQuestions:\r\n\r\n",
"grammar_list"=>"",
"title_append"=>nil,
"sections"=>
[{"name"=>"Vocab",
"order"=>0,
"questions"=>
[{"question"=>"rgrthth",
"type"=>3,
"order"=>0,
"answers"=>[{"answer"=>"aa", "correct"=>true, "order"=>0}]},
{"question"=>"uh67jy7k",
"type"=>3,
"order"=>0,
"answers"=>[{"answer"=>"bb", "correct"=>true, "order"=>0}]},
{"question"=>"rgtdyjuyik",
"type"=>3,
"order"=>0,
"answers"=>[{"answer"=>"cc", "correct"=>true, "order"=>0}]}]}]}
[2] pry(Exercise)> exit
From: /Users/pc-a/Sites/mailbox/app/models/exercise.rb # line 110 Exercise.import!:
92: def self.import!
93: #request = Net::HTTP.get(URI.parse('example.com/output'))
94: #exercises = JSON.parse(#request)
95:
96: #exercises.map(&:with_indifferent_access).each do |e|
97: next if Exercise.exists?(e[:week], e[:exercise_type], e[:grade_id])
98:
99: binding.pry
100:
101:
102: e[:sections_attributes] = e.delete(:sections)
103: e[:sections_attributes].map! do |section_attributes|
104: section_attributes[:questions_attributes] = section_attributes.delete(:questions)
105: section_attributes[:questions_attributes].map! do |question_attributes|
106: question_attributes[:answers_attributes] = question_attributes.delete(:answers)
107: end
108: end
109:
=> 110: binding.pry
111:
112: exercise = Exercise.new(e)
113: if exercise.save
114: puts "Exercise #{exercise.id} created!"
115: else
116: puts "Could not create Exercise: #{exercise.errors.full_messages.join('; ')}"
117: end
118: end
119: end
[1] pry(Exercise)> e
=> {"publish_date"=>"2013-12-11",
"grade_id"=>2,
"exercise_type"=>3,
"week"=>1,
"content"=>"<hr />\r\n\r\nQuestions:\r\n\r\n",
"grammar_list"=>"",
"title_append"=>nil,
"sections_attributes"=>
[[[{"answer"=>"aa", "correct"=>true, "order"=>0}],
[{"answer"=>"bb", "correct"=>true, "order"=>0}],
[{"answer"=>"cc", "correct"=>true, "order"=>0}]]]}

Answer 1

Try the following:
def self.import!
#request = Net::HTTP.get(URI.parse('https://example.com/output'))
#exercises = JSON.parse(#request)
#exercises.map(&:with_indifferent_access).each do |e|
next if Exercise.exists?(name: e[:name]) # or whatever the attribute(s) you use to determine the uniqueness of an Exercise
e[:sections_attributes] = e.delete(:sections)
e[:sections_attributes].map! do |section_attributes|
section_attributes[:questions_attributes] = section_attributes.delete(:questions)
section_attributes[:questions_attributes].map! do |question_attributes|
question_attributes[:answers_attributes] = question_attributes.delete(:answers)
end
end
exercise = Exercise.new(e)
if exercise.save
puts "Exercise #{exercise.id} created!"
else
puts "Could not create Exercise: #{exercise.errors.full_messages.join('; ')}"
end
end
end
end