How to Generate A Slug on AppSync Mutation
1
I have a mutation to create a new Event. However I want to be able to reference/get that Event using a friendly id or slug instead of the DynamoDB primary key of id. Ideally this would use the city field from the input to generate the slug. However each slug must be unique per author
How can I generate a friendly slug in my mutation that is based on the city name and unique (per author) ?
Schema
type Event {
id: ID!
subtitle: String!
city: String!
author: String!
created: AWSDateTime
}
mutation.CreateEvent
#set( $attribs = $util.dynamodb.toMapValues($ctx.args.input))
#set( $attribs.author = $util.dynamodb.toDynamoDB($ctx.identity.username))
#set( $attribs.created = $util.dynamodb.toDynamoDB($util.time.nowFormatted("yyyy-MM-dd HH:mm:ssZ")))
{
"version": "2017-02-28",
"operation": "PutItem",
"key": {
"id": $util.dynamodb.toDynamoDBJson($util.autoId()),
},
"attributeValues": $util.toJson($attribs),
"condition": {
"expression": "attribute_not_exists(#id)",
"expressionNames": {
"#id": "id",
},
},
}
```
aws-appsync
asked Nov 23 '18 at 17:42
CraigHCraigH
86711638
add a comment |
1
I have a mutation to create a new Event. However I want to be able to reference/get that Event using a friendly id or slug instead of the DynamoDB primary key of id. Ideally this would use the city field from the input to generate the slug. However each slug must be unique per author
How can I generate a friendly slug in my mutation that is based on the city name and unique (per author) ?
Schema
type Event {
id: ID!
subtitle: String!
city: String!
author: String!
created: AWSDateTime
}
mutation.CreateEvent
#set( $attribs = $util.dynamodb.toMapValues($ctx.args.input))
#set( $attribs.author = $util.dynamodb.toDynamoDB($ctx.identity.username))
#set( $attribs.created = $util.dynamodb.toDynamoDB($util.time.nowFormatted("yyyy-MM-dd HH:mm:ssZ")))
{
"version": "2017-02-28",
"operation": "PutItem",
"key": {
"id": $util.dynamodb.toDynamoDBJson($util.autoId()),
},
"attributeValues": $util.toJson($attribs),
"condition": {
"expression": "attribute_not_exists(#id)",
"expressionNames": {
"#id": "id",
},
},
}
```
aws-appsync
asked Nov 23 '18 at 17:42
CraigHCraigH
86711638
You would probably have to store the slug in a different table, where the author is the hash key and the slug probably the sort key. Also, you will have to write logic that checks if a slug candidate is available in the table before creating it, and trying something different if it fails. In that case I would recommend using the Lambda data source.
– Tinou
Nov 23 '18 at 22:12
@Tinou could i use the new Pipeline Resolvers instead in this case somehow?
– CraigH
Nov 27 '18 at 20:42
add a comment |
1
1
1
I have a mutation to create a new Event. However I want to be able to reference/get that Event using a friendly id or slug instead of the DynamoDB primary key of id. Ideally this would use the city field from the input to generate the slug. However each slug must be unique per author
How can I generate a friendly slug in my mutation that is based on the city name and unique (per author) ?
Schema
type Event {
id: ID!
subtitle: String!
city: String!
author: String!
created: AWSDateTime
}
mutation.CreateEvent
#set( $attribs = $util.dynamodb.toMapValues($ctx.args.input))
#set( $attribs.author = $util.dynamodb.toDynamoDB($ctx.identity.username))
#set( $attribs.created = $util.dynamodb.toDynamoDB($util.time.nowFormatted("yyyy-MM-dd HH:mm:ssZ")))
{
"version": "2017-02-28",
"operation": "PutItem",
"key": {
"id": $util.dynamodb.toDynamoDBJson($util.autoId()),
},
"attributeValues": $util.toJson($attribs),
"condition": {
"expression": "attribute_not_exists(#id)",
"expressionNames": {
"#id": "id",
},
},
}
```
aws-appsync
asked Nov 23 '18 at 17:42
CraigHCraigH
86711638
I have a mutation to create a new Event. However I want to be able to reference/get that Event using a friendly id or slug instead of the DynamoDB primary key of id. Ideally this would use the city field from the input to generate the slug. However each slug must be unique per author
How can I generate a friendly slug in my mutation that is based on the city name and unique (per author) ?
Schema
type Event {
id: ID!
subtitle: String!
city: String!
author: String!
created: AWSDateTime
}
mutation.CreateEvent
#set( $attribs = $util.dynamodb.toMapValues($ctx.args.input))
#set( $attribs.author = $util.dynamodb.toDynamoDB($ctx.identity.username))
#set( $attribs.created = $util.dynamodb.toDynamoDB($util.time.nowFormatted("yyyy-MM-dd HH:mm:ssZ")))
{
"version": "2017-02-28",
"operation": "PutItem",
"key": {
"id": $util.dynamodb.toDynamoDBJson($util.autoId()),
},
"attributeValues": $util.toJson($attribs),
"condition": {
"expression": "attribute_not_exists(#id)",
"expressionNames": {
"#id": "id",
},
},
}
```
aws-appsync
aws-appsync
asked Nov 23 '18 at 17:42
CraigHCraigH
86711638
asked Nov 23 '18 at 17:42
CraigHCraigH
86711638
asked Nov 23 '18 at 17:42
CraigHCraigH
86711638
asked Nov 23 '18 at 17:42
CraigHCraigH
86711638
asked Nov 23 '18 at 17:42
CraigHCraigH
86711638
86711638
You would probably have to store the slug in a different table, where the author is the hash key and the slug probably the sort key. Also, you will have to write logic that checks if a slug candidate is available in the table before creating it, and trying something different if it fails. In that case I would recommend using the Lambda data source.
– Tinou
Nov 23 '18 at 22:12
@Tinou could i use the new Pipeline Resolvers instead in this case somehow?
– CraigH
Nov 27 '18 at 20:42
add a comment |
You would probably have to store the slug in a different table, where the author is the hash key and the slug probably the sort key. Also, you will have to write logic that checks if a slug candidate is available in the table before creating it, and trying something different if it fails. In that case I would recommend using the Lambda data source.
– Tinou
Nov 23 '18 at 22:12
@Tinou could i use the new Pipeline Resolvers instead in this case somehow?
– CraigH
Nov 27 '18 at 20:42
You would probably have to store the slug in a different table, where the author is the hash key and the slug probably the sort key. Also, you will have to write logic that checks if a slug candidate is available in the table before creating it, and trying something different if it fails. In that case I would recommend using the Lambda data source.
– Tinou
Nov 23 '18 at 22:12
You would probably have to store the slug in a different table, where the author is the hash key and the slug probably the sort key. Also, you will have to write logic that checks if a slug candidate is available in the table before creating it, and trying something different if it fails. In that case I would recommend using the Lambda data source.
– Tinou
Nov 23 '18 at 22:12
@Tinou could i use the new Pipeline Resolvers instead in this case somehow?
– CraigH
Nov 27 '18 at 20:42
@Tinou could i use the new Pipeline Resolvers instead in this case somehow?
– CraigH
Nov 27 '18 at 20:42
add a comment |
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You would probably have to store the slug in a different table, where the author is the hash key and the slug probably the sort key. Also, you will have to write logic that checks if a slug candidate is available in the table before creating it, and trying something different if it fails. In that case I would recommend using the Lambda data source.
– Tinou
Nov 23 '18 at 22:12
@Tinou could i use the new Pipeline Resolvers instead in this case somehow?
– CraigH
Nov 27 '18 at 20:42