Warrants (Details 1) - $ / shares	9 Months Ended	12 Months Ended
	Apr. 30, 2018	Jul. 31, 2017
Warrants [Abstract]
Warrants, Outstanding at July 31, 2017	510,000
Warrants, Granted	1,255,000
Warrants, Exercised
Warrants, Cancelled
Warrants, Outstanding at April 30, 2018	1,765,000	510,000
Warrants, Exercisable at April 30, 2018	1,765,000
Weighted-average exercise price, Outstanding at July 31, 2017	$ 0.29
Weighted-average exercise price, Granted	0.21
Weighted-average exercise price, Exercised
Weighted-average exercise price, Cancelled
Weighted-average exercise price, Outstanding at April 30, 2018	$ 0.23	$ 0.29
Weighted-average remaining contractual term (years), Outstanding	3 years	2 years 10 months 14 days
Weighted-average remaining contractual term (years), Granted	3 years 5 months 9 days
Weighted-average remaining contractual term (years), Exercisable at April 30, 2018	3 years