How to use `after_update' callback in rails?
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0
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I want to use after_update callback method for a method, which updates the product's stock in shopping cart application. The code in controller is:
ProductsController.rb:
def update
order = current_order
@order_item = order.order_items.find(params[:id])
@order_item.product.save
end
And in ProudctModel:
after_update :remove_stock
def remove_stock
puts "this is #{order_items}"
order_items.collect do |oi|
puts "this is product id: #{oi.product.id}"
end
end
However, on running the above the log is as follows:
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
Why is this showing so many product_ids, when there is only one product present in order_item?
PS: My associations are as follows:
product has_many order_items
order_items belongs_to order
order has_many order_items
What am I missing ?
Please help.
Thanks inadvance.
ruby-on-rails callback
asked Nov 20 at 12:11
Neha
305
add a comment |
up vote
0
down vote
favorite
I want to use after_update callback method for a method, which updates the product's stock in shopping cart application. The code in controller is:
ProductsController.rb:
def update
order = current_order
@order_item = order.order_items.find(params[:id])
@order_item.product.save
end
And in ProudctModel:
after_update :remove_stock
def remove_stock
puts "this is #{order_items}"
order_items.collect do |oi|
puts "this is product id: #{oi.product.id}"
end
end
However, on running the above the log is as follows:
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
Why is this showing so many product_ids, when there is only one product present in order_item?
PS: My associations are as follows:
product has_many order_items
order_items belongs_to order
order has_many order_items
What am I missing ?
Please help.
Thanks inadvance.
ruby-on-rails callback
asked Nov 20 at 12:11
Neha
305
you're printing order items id instead of product id, if I'm not wrong
– Ravi Mariya
Nov 20 at 12:19
Yes sorry about that. But my real question is, why is it looping through so many times? Even when I changed it to product.id, it is print the id as many times as shown in the question. Why so ?
– Neha
Nov 20 at 12:25
because you're looping over all the order_items,order_items.collect do |oi|
– Ravi Mariya
Nov 20 at 12:27
I checked it. There is only one order_item in order_items.
– Neha
Nov 20 at 12:28
check the answer I have posted, can you try that code? and check
– Ravi Mariya
Nov 20 at 12:32
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I want to use after_update callback method for a method, which updates the product's stock in shopping cart application. The code in controller is:
ProductsController.rb:
def update
order = current_order
@order_item = order.order_items.find(params[:id])
@order_item.product.save
end
And in ProudctModel:
after_update :remove_stock
def remove_stock
puts "this is #{order_items}"
order_items.collect do |oi|
puts "this is product id: #{oi.product.id}"
end
end
However, on running the above the log is as follows:
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
Why is this showing so many product_ids, when there is only one product present in order_item?
PS: My associations are as follows:
product has_many order_items
order_items belongs_to order
order has_many order_items
What am I missing ?
Please help.
Thanks inadvance.
ruby-on-rails callback
asked Nov 20 at 12:11
Neha
305
I want to use after_update callback method for a method, which updates the product's stock in shopping cart application. The code in controller is:
ProductsController.rb:
def update
order = current_order
@order_item = order.order_items.find(params[:id])
@order_item.product.save
end
And in ProudctModel:
after_update :remove_stock
def remove_stock
puts "this is #{order_items}"
order_items.collect do |oi|
puts "this is product id: #{oi.product.id}"
end
end
However, on running the above the log is as follows:
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
order items product: 1
Why is this showing so many product_ids, when there is only one product present in order_item?
PS: My associations are as follows:
product has_many order_items
order_items belongs_to order
order has_many order_items
What am I missing ?
Please help.
Thanks inadvance.
ruby-on-rails callback
ruby-on-rails callback
asked Nov 20 at 12:11
Neha
305
asked Nov 20 at 12:11
Neha
305
edited Nov 20 at 12:24
asked Nov 20 at 12:11
Neha
305
asked Nov 20 at 12:11
Neha
305
asked Nov 20 at 12:11
Neha
305
305
you're printing order items id instead of product id, if I'm not wrong
– Ravi Mariya
Nov 20 at 12:19
Yes sorry about that. But my real question is, why is it looping through so many times? Even when I changed it to product.id, it is print the id as many times as shown in the question. Why so ?
– Neha
Nov 20 at 12:25
because you're looping over all the order_items,order_items.collect do |oi|
– Ravi Mariya
Nov 20 at 12:27
I checked it. There is only one order_item in order_items.
– Neha
Nov 20 at 12:28
check the answer I have posted, can you try that code? and check
– Ravi Mariya
Nov 20 at 12:32
add a comment |
you're printing order items id instead of product id, if I'm not wrong
– Ravi Mariya
Nov 20 at 12:19
Yes sorry about that. But my real question is, why is it looping through so many times? Even when I changed it to product.id, it is print the id as many times as shown in the question. Why so ?
– Neha
Nov 20 at 12:25
because you're looping over all the order_items,order_items.collect do |oi|
– Ravi Mariya
Nov 20 at 12:27
I checked it. There is only one order_item in order_items.
– Neha
Nov 20 at 12:28
check the answer I have posted, can you try that code? and check
– Ravi Mariya
Nov 20 at 12:32
you're printing order items id instead of product id, if I'm not wrong
– Ravi Mariya
Nov 20 at 12:19
you're printing order items id instead of product id, if I'm not wrong
– Ravi Mariya
Nov 20 at 12:19
Yes sorry about that. But my real question is, why is it looping through so many times? Even when I changed it to product.id, it is print the id as many times as shown in the question. Why so ?
– Neha
Nov 20 at 12:25
Yes sorry about that. But my real question is, why is it looping through so many times? Even when I changed it to product.id, it is print the id as many times as shown in the question. Why so ?
– Neha
Nov 20 at 12:25
because you're looping over all the order_items,
order_items.collect do |oi|– Ravi Mariya
Nov 20 at 12:27
because you're looping over all the order_items,
order_items.collect do |oi|– Ravi Mariya
Nov 20 at 12:27
I checked it. There is only one order_item in order_items.
– Neha
Nov 20 at 12:28
I checked it. There is only one order_item in order_items.
– Neha
Nov 20 at 12:28
check the answer I have posted, can you try that code? and check
– Ravi Mariya
Nov 20 at 12:32
check the answer I have posted, can you try that code? and check
– Ravi Mariya
Nov 20 at 12:32
add a comment |
1 Answer
1
active
oldest
votes
up vote
0
down vote
accepted
after_update :remove_stock
def remove_stock
puts "this is product id: #{self.id}"
end
since you're in Product model itself, you have access to the Product object
answered Nov 20 at 12:31
Ravi Mariya
934716
This worked. One more doubt. I also what order_item object in the remove_stock method. How to get that?
– Neha
Nov 20 at 12:39
you can find the order_items for that product id in model
– Ravi Mariya
Nov 20 at 12:45
How? I usedproduct.order_items, it threw error. I am sorry if I am missing something obvious, but I am new to rails and just learning these methods.
– Neha
Nov 20 at 12:50
just writeself.order_itemsororder_itemsdirectly it will work
– Ravi Mariya
Nov 20 at 12:50
The table order_item contains a attribute quantity, which i want to use here in this method. So how to call that specific order_item associated with the product from the order_items collection?
– Neha
Nov 20 at 12:52
|
show 1 more comment
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1 Answer
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1 Answer
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active
oldest
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oldest
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oldest
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up vote
0
down vote
accepted
after_update :remove_stock
def remove_stock
puts "this is product id: #{self.id}"
end
since you're in Product model itself, you have access to the Product object
answered Nov 20 at 12:31
Ravi Mariya
934716
This worked. One more doubt. I also what order_item object in the remove_stock method. How to get that?
– Neha
Nov 20 at 12:39
you can find the order_items for that product id in model
– Ravi Mariya
Nov 20 at 12:45
How? I usedproduct.order_items, it threw error. I am sorry if I am missing something obvious, but I am new to rails and just learning these methods.
– Neha
Nov 20 at 12:50
just writeself.order_itemsororder_itemsdirectly it will work
– Ravi Mariya
Nov 20 at 12:50
The table order_item contains a attribute quantity, which i want to use here in this method. So how to call that specific order_item associated with the product from the order_items collection?
– Neha
Nov 20 at 12:52
|
show 1 more comment
up vote
0
down vote
accepted
after_update :remove_stock
def remove_stock
puts "this is product id: #{self.id}"
end
since you're in Product model itself, you have access to the Product object
answered Nov 20 at 12:31
Ravi Mariya
934716
This worked. One more doubt. I also what order_item object in the remove_stock method. How to get that?
– Neha
Nov 20 at 12:39
you can find the order_items for that product id in model
– Ravi Mariya
Nov 20 at 12:45
How? I usedproduct.order_items, it threw error. I am sorry if I am missing something obvious, but I am new to rails and just learning these methods.
– Neha
Nov 20 at 12:50
just writeself.order_itemsororder_itemsdirectly it will work
– Ravi Mariya
Nov 20 at 12:50
The table order_item contains a attribute quantity, which i want to use here in this method. So how to call that specific order_item associated with the product from the order_items collection?
– Neha
Nov 20 at 12:52
|
show 1 more comment
up vote
0
down vote
accepted
up vote
0
down vote
accepted
after_update :remove_stock
def remove_stock
puts "this is product id: #{self.id}"
end
since you're in Product model itself, you have access to the Product object
answered Nov 20 at 12:31
Ravi Mariya
934716
after_update :remove_stock
def remove_stock
puts "this is product id: #{self.id}"
end
since you're in Product model itself, you have access to the Product object
answered Nov 20 at 12:31
Ravi Mariya
934716
edited Nov 20 at 12:37
answered Nov 20 at 12:31
Ravi Mariya
934716
answered Nov 20 at 12:31
Ravi Mariya
934716
answered Nov 20 at 12:31
Ravi Mariya
934716
934716
This worked. One more doubt. I also what order_item object in the remove_stock method. How to get that?
– Neha
Nov 20 at 12:39
you can find the order_items for that product id in model
– Ravi Mariya
Nov 20 at 12:45
How? I usedproduct.order_items, it threw error. I am sorry if I am missing something obvious, but I am new to rails and just learning these methods.
– Neha
Nov 20 at 12:50
just writeself.order_itemsororder_itemsdirectly it will work
– Ravi Mariya
Nov 20 at 12:50
The table order_item contains a attribute quantity, which i want to use here in this method. So how to call that specific order_item associated with the product from the order_items collection?
– Neha
Nov 20 at 12:52
|
show 1 more comment
This worked. One more doubt. I also what order_item object in the remove_stock method. How to get that?
– Neha
Nov 20 at 12:39
you can find the order_items for that product id in model
– Ravi Mariya
Nov 20 at 12:45
How? I usedproduct.order_items, it threw error. I am sorry if I am missing something obvious, but I am new to rails and just learning these methods.
– Neha
Nov 20 at 12:50
just writeself.order_itemsororder_itemsdirectly it will work
– Ravi Mariya
Nov 20 at 12:50
The table order_item contains a attribute quantity, which i want to use here in this method. So how to call that specific order_item associated with the product from the order_items collection?
– Neha
Nov 20 at 12:52
This worked. One more doubt. I also what order_item object in the remove_stock method. How to get that?
– Neha
Nov 20 at 12:39
This worked. One more doubt. I also what order_item object in the remove_stock method. How to get that?
– Neha
Nov 20 at 12:39
you can find the order_items for that product id in model
– Ravi Mariya
Nov 20 at 12:45
you can find the order_items for that product id in model
– Ravi Mariya
Nov 20 at 12:45
How? I used
product.order_items , it threw error. I am sorry if I am missing something obvious, but I am new to rails and just learning these methods.– Neha
Nov 20 at 12:50
How? I used
product.order_items , it threw error. I am sorry if I am missing something obvious, but I am new to rails and just learning these methods.– Neha
Nov 20 at 12:50
just write
self.order_items or order_items directly it will work– Ravi Mariya
Nov 20 at 12:50
just write
self.order_items or order_items directly it will work– Ravi Mariya
Nov 20 at 12:50
The table order_item contains a attribute quantity, which i want to use here in this method. So how to call that specific order_item associated with the product from the order_items collection?
– Neha
Nov 20 at 12:52
The table order_item contains a attribute quantity, which i want to use here in this method. So how to call that specific order_item associated with the product from the order_items collection?
– Neha
Nov 20 at 12:52
|
show 1 more comment
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you're printing order items id instead of product id, if I'm not wrong
– Ravi Mariya
Nov 20 at 12:19
Yes sorry about that. But my real question is, why is it looping through so many times? Even when I changed it to product.id, it is print the id as many times as shown in the question. Why so ?
– Neha
Nov 20 at 12:25
because you're looping over all the order_items,
order_items.collect do |oi|– Ravi Mariya
Nov 20 at 12:27
I checked it. There is only one order_item in order_items.
– Neha
Nov 20 at 12:28
check the answer I have posted, can you try that code? and check
– Ravi Mariya
Nov 20 at 12:32