play-slick scala many to many
I have an endpoint lets say /order/ where i can send json object(my order), which contains some products etc, so my problem is i have to first save the order and wait for the order id back from the db and then save my products with this new order id( we are talking many to many relation thats why theres another table)
Consider this controller method
def postOrder = Action(parse.json[OrderRest]) { req => {
Created(Json.toJson(manageOrderService.insertOrder(req.body)))
}
}
this is how my repo methods look like
def addOrder(order: Order) = db.run {
(orders returning orders) += order
}
how can i chain db.runs to first insert order, get order id and then insert my products with this order id i just got?
im thinking about putting some service between my controller and repo, and managing those actions there, but i have no idea where to start
sql scala many-to-many slick
asked Nov 26 '18 at 8:03
adamblumsteinadamblumstein
204
add a comment |
I have an endpoint lets say /order/ where i can send json object(my order), which contains some products etc, so my problem is i have to first save the order and wait for the order id back from the db and then save my products with this new order id( we are talking many to many relation thats why theres another table)
Consider this controller method
def postOrder = Action(parse.json[OrderRest]) { req => {
Created(Json.toJson(manageOrderService.insertOrder(req.body)))
}
}
this is how my repo methods look like
def addOrder(order: Order) = db.run {
(orders returning orders) += order
}
how can i chain db.runs to first insert order, get order id and then insert my products with this order id i just got?
im thinking about putting some service between my controller and repo, and managing those actions there, but i have no idea where to start
sql scala many-to-many slick
asked Nov 26 '18 at 8:03
adamblumsteinadamblumstein
204
add a comment |
I have an endpoint lets say /order/ where i can send json object(my order), which contains some products etc, so my problem is i have to first save the order and wait for the order id back from the db and then save my products with this new order id( we are talking many to many relation thats why theres another table)
Consider this controller method
def postOrder = Action(parse.json[OrderRest]) { req => {
Created(Json.toJson(manageOrderService.insertOrder(req.body)))
}
}
this is how my repo methods look like
def addOrder(order: Order) = db.run {
(orders returning orders) += order
}
how can i chain db.runs to first insert order, get order id and then insert my products with this order id i just got?
im thinking about putting some service between my controller and repo, and managing those actions there, but i have no idea where to start
sql scala many-to-many slick
asked Nov 26 '18 at 8:03
adamblumsteinadamblumstein
204
I have an endpoint lets say /order/ where i can send json object(my order), which contains some products etc, so my problem is i have to first save the order and wait for the order id back from the db and then save my products with this new order id( we are talking many to many relation thats why theres another table)
Consider this controller method
def postOrder = Action(parse.json[OrderRest]) { req => {
Created(Json.toJson(manageOrderService.insertOrder(req.body)))
}
}
this is how my repo methods look like
def addOrder(order: Order) = db.run {
(orders returning orders) += order
}
how can i chain db.runs to first insert order, get order id and then insert my products with this order id i just got?
im thinking about putting some service between my controller and repo, and managing those actions there, but i have no idea where to start
sql scala many-to-many slick
sql scala many-to-many slick
asked Nov 26 '18 at 8:03
adamblumsteinadamblumstein
204
asked Nov 26 '18 at 8:03
adamblumsteinadamblumstein
204
asked Nov 26 '18 at 8:03
adamblumsteinadamblumstein
204
asked Nov 26 '18 at 8:03
adamblumsteinadamblumstein
204
asked Nov 26 '18 at 8:03
adamblumsteinadamblumstein
204
204
add a comment |
add a comment |
1 Answer
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You can use for to chain database operations. Here is an example of adding a table to a db by adding a header row to represent the table and then adding the data rows. In this case it is a simple table containing (age, value).
/** Add a new table to the database */
def addTable(name: String, table: Seq[(Int, Int)]) = {
val action = for {
key <- (Headers returning Headers.map(_.tableId)) += HeadersRow(0, name)
_ <- Values ++= table.map { case (age, value) => ValuesRow(key, age, value) }
} yield key
db.run(action.transactionally)
}
This is cut down from the working code, but it should give the idea of how to do what you want. The first for statement would generate the order id and then the second statement would add the order with that order id.
This is done transactionally so that the new order will not be created unless the order data is valid (in database terms).
answered Nov 26 '18 at 10:01
TimTim
5,7431617
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can use for to chain database operations. Here is an example of adding a table to a db by adding a header row to represent the table and then adding the data rows. In this case it is a simple table containing (age, value).
/** Add a new table to the database */
def addTable(name: String, table: Seq[(Int, Int)]) = {
val action = for {
key <- (Headers returning Headers.map(_.tableId)) += HeadersRow(0, name)
_ <- Values ++= table.map { case (age, value) => ValuesRow(key, age, value) }
} yield key
db.run(action.transactionally)
}
This is cut down from the working code, but it should give the idea of how to do what you want. The first for statement would generate the order id and then the second statement would add the order with that order id.
This is done transactionally so that the new order will not be created unless the order data is valid (in database terms).
answered Nov 26 '18 at 10:01
TimTim
5,7431617
add a comment |
You can use for to chain database operations. Here is an example of adding a table to a db by adding a header row to represent the table and then adding the data rows. In this case it is a simple table containing (age, value).
/** Add a new table to the database */
def addTable(name: String, table: Seq[(Int, Int)]) = {
val action = for {
key <- (Headers returning Headers.map(_.tableId)) += HeadersRow(0, name)
_ <- Values ++= table.map { case (age, value) => ValuesRow(key, age, value) }
} yield key
db.run(action.transactionally)
}
This is cut down from the working code, but it should give the idea of how to do what you want. The first for statement would generate the order id and then the second statement would add the order with that order id.
This is done transactionally so that the new order will not be created unless the order data is valid (in database terms).
answered Nov 26 '18 at 10:01
TimTim
5,7431617
add a comment |
You can use for to chain database operations. Here is an example of adding a table to a db by adding a header row to represent the table and then adding the data rows. In this case it is a simple table containing (age, value).
/** Add a new table to the database */
def addTable(name: String, table: Seq[(Int, Int)]) = {
val action = for {
key <- (Headers returning Headers.map(_.tableId)) += HeadersRow(0, name)
_ <- Values ++= table.map { case (age, value) => ValuesRow(key, age, value) }
} yield key
db.run(action.transactionally)
}
This is cut down from the working code, but it should give the idea of how to do what you want. The first for statement would generate the order id and then the second statement would add the order with that order id.
This is done transactionally so that the new order will not be created unless the order data is valid (in database terms).
answered Nov 26 '18 at 10:01
TimTim
5,7431617
You can use for to chain database operations. Here is an example of adding a table to a db by adding a header row to represent the table and then adding the data rows. In this case it is a simple table containing (age, value).
/** Add a new table to the database */
def addTable(name: String, table: Seq[(Int, Int)]) = {
val action = for {
key <- (Headers returning Headers.map(_.tableId)) += HeadersRow(0, name)
_ <- Values ++= table.map { case (age, value) => ValuesRow(key, age, value) }
} yield key
db.run(action.transactionally)
}
This is cut down from the working code, but it should give the idea of how to do what you want. The first for statement would generate the order id and then the second statement would add the order with that order id.
This is done transactionally so that the new order will not be created unless the order data is valid (in database terms).
answered Nov 26 '18 at 10:01
TimTim
5,7431617
answered Nov 26 '18 at 10:01
TimTim
5,7431617
answered Nov 26 '18 at 10:01
TimTim
5,7431617
answered Nov 26 '18 at 10:01
TimTim
5,7431617
5,7431617
add a comment |
add a comment |
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