Statement Resource
Manages learner statements.
Sends a statement to the LRS.
import XAPI, { Statement } from "@xapi/xapi";
// new XAPI() etc
const myStatement: Statement = {
actor: {
objectType: "Agent",
name: "Test Agent",
mbox: "mailto:[email protected]"
},
verb: {
id: "http://example.com/verbs/tested",
display: {
"en-GB": "tested"
}
},
object: {
objectType: "Activity",
id: "https://github.com/xapijs/xapi"
}
};
xapi.sendStatement({
statement: myStatement
});
import CryptoJS from "crypto-js";
import { arrayBufferToWordArray } from "...";
const attachmentContent: string = "hello world";
const arrayBuffer: ArrayBuffer = new TextEncoder().encode(attachmentContent);
const myStatement: Statement = {
// actor, verb, object etc,
attachments: [{
usageType: XAPI.AttachmentUsages.SUPPORTING_MEDIA,
display: {
"en-US": "Text Attachment"
},
description: {
"en-US": `The text attachment contains "${attachmentContent}"`
},
contentType: "text/plain",
length: arrayBuffer.byteLength,
sha2: CryptoJS.SHA256(arrayBufferToWordArray(arrayBuffer)).toString()
}]
}
xapi.sendStatement({
statement: myStatement,
attachments: [arrayBuffer]
});
This example requires CryptoJS to generate a sha2 of the attachment data and convert the array buffer to a word array.
Parameter | Type | Required | Description |
statement | true | The statement you wish to send to the LRS. | |
attachments | ArrayBuffer[] | false | An array of attachment data converted to ArrayBuffer. |
This method returns an
AxiosPromise with the success data containing a string array of statement IDs if successful, or if unsuccessful the rejection contains an error message.Sends multiple statements to the LRS.
import XAPI, { Statement } from "@xapi/xapi";
// new XAPI() etc
const myStatement: Statement = {
actor: {
objectType: "Agent",
name: "Test Agent",
mbox: "mailto:[email protected]"
},
verb: {
id: "http://example.com/verbs/tested",
display: {
"en-GB": "tested"
}
},
object: {
objectType: "Activity",
id: "https://github.com/xapijs/xapi"
}
};
// Define another statement
const myStatementTwo: Statement = {
...myStatement
};
xapi.sendStatements({
statements: [myStatement, myStatementTwo]
});
import CryptoJS from "crypto-js";
import { arrayBufferToWordArray } from "...";
const attachmentContent: string = "hello world";
const arrayBuffer: ArrayBuffer = new TextEncoder().encode(attachmentContent);
const myStatement: Statement = {
// actor, verb, object etc,
attachments: [{
usageType: XAPI.AttachmentUsages.SUPPORTING_MEDIA,
display: {
"en-US": "Text Attachment"
},
description: {
"en-US": `The text attachment contains "${attachmentContent}"`
},
contentType: "text/plain",
length: arrayBuffer.byteLength,
sha2: CryptoJS.SHA256(arrayBufferToWordArray(arrayBuffer)).toString()
}]
}
// Define another statement
const myStatementTwo: Statement = {
...myStatement
};
// Send through the attachments in the same sequence as they
// appear in the statements, for brevity we are using the same
// attachment here twice
xapi.sendStatement({
statements: [myStatement, myStatementTwo],
attachments: [arrayBuffer, arrayBuffer]
});
This example requires CryptoJS to generate a sha2 of the attachment data and convert the array buffer to a word array.
Parameter | Type | Required | Description |
statements | true | The statements you wish to send to the LRS. | |
attachments | ArrayBuffer[] | false | An array of attachment data converted to ArrayBuffer. |
This method returns an
AxiosPromise with the success data containing a string array of statement IDs if successful, or if unsuccessful the rejection contains an error message.To receive a single statement, you must use the
getStatement method and pass the statement ID in the query. Optionally, you can provide additional parameters to the query to change the data format returned from the LRS.xapi.getStatement({
statementId: "abcdefgh-1234"
}).then((result: AxiosResponse<Statement>) => {
const statement: Statement = result.data;
// do stuff with `statement`
});
xapi.getStatement({
statementId: "abcdefgh-1234",
attachments: true
}).then((result: AxiosResponse<StatementResponseWithAttachments>) => {
const parts: [Statement, ...Part[]] = result.data;
const statement: Statement = parts[0];
const attachment: unknown = parts[1];
})
Parameter | Type | Required | Description |
statementId | string | true | The identifier of the statement to request. |
attachments | boolean | false | Whether to return the attachment(s) associated with the statement, if any. |
format | string | false | What human readable names and descriptions are included in the statement.
|
This method returns an
AxiosPromise with the success data containing the Statement of the supplied statementId.When getting a statement with
attachments: true, the success data is returned as an array. The first array item is of type Statement, and the following are of type Part and are the attachments supplied with the statement.To receive an array of statements based upon a query, you must use the
getStatements method. See the GetStatementsQuery interface for a full list of ways to create your query.const myAgent: Agent = {...};
xapi.getStatements({
agent: myAgent
}).then((result: AxiosResponse<StatementsResponse>) => {
const statementsResponse: StatementsResponse = result.data;
// do stuff with `statementsResponse.statements`
});
Parameter | Type | Required | Description |
agent | Agent | false | The agent to filter the query by. |
verb | string | false | The verb identifier to filter the query by. |
activity | string | false | The activity identifier to filter the query by. |
registration | string | false | The registration to filter the query by. |
related_activities | boolean | false | Whether to include any activity in the statement as part of the filter to query by. |
related_agents | boolean | false | Whether to include any agent in the statement as part of the filter to query by. |
since | Timestamp (ISOString) | false | Filters only statements after the given Timestamp. |
until | Timestamp (ISOString) | false | Filters only statements before the given Timestamp. |
limit | number | false | Number of statements to return. |
ascending | boolean | false | Determines whether to return the statements in ascending order. |
attachments | boolean | false | Determines whether to return the attachments for the resulting statements. |
When getting statements with
attachments: true, the success data is returned as an array. The first array item is of type StatementsResponse, and the following are of type Part and are the attachments supplied with the statement.To be used in conjunction with
getStatements. If the more property is populated on your initial request, more data is available. Send the value of the more property to this method to get the next page of statements.const myAgent: Agent = {...};
xapi.getStatements({
agent: myAgent
}).then((result: AxiosReponse<StatementsResponse>) => {
// data
xapi.getMoreStatements({
more: result.data.more
}).then((result: AxiosResponse<StatementsResponse>) => {
// more data
});
});
Parameter | Type | Required | Description |
more | string | true | The more property passed from the getStatements/getMoreStatements query response. |
This method returns an
AxiosPromise with the success data containing a StatementsResponse object or an Array containing StatementsResponse and Part if the original query has attachments: true. When working in TypeScript you may need to cast your result.data return type explicitly as StatementsResponse or StatementsResponseWithAttachments.Voids a statement in the LRS by the supplied Actor.
const actor: Actor = { ... };
xapi.voidStatement({
actor: actor,
statementId: "abcdefgh-1234"
});
Parameters
Parameter | Type | Required | Description |
actor | true | The Actor who is voiding the statement e.g. an administrator. | |
statementId | string | true | The statement to be voided. |
This method returns an
AxiosPromise with the success data containing an array of statement ID strings of the void statement.Voids multiple statements in the LRS by the supplied Actor.
const actor: Actor = { ... };
xapi.voidStatements({
actor: actor,
statementIds: ["abcdefgh-1234", "ijklmnop-5678"]
});
Parameters
Parameter | Type | Required | Description |
actor | true | The Actor who is voiding the statement e.g. an administrator. | |
statementIds | string[] | true | The statements to be voided. |
This method returns an
AxiosPromise with the success data containing an array of statement ID strings of the void statements.To receive a single voided statement, you must use the
getVoidedStatement method and pass the original statement ID in the query (not the original statement's void statement id). Optionally, you can provide additional parameters to the query to change the data format returned from the LRS.xapi.getVoidedStatement({
statementId: "abcdefgh-1234"
}).then((result: AxiosResponse<Statement>) => {
const voidStatement: Statement = result.data;
// do stuff with `voidStatement`
});
Parameter | Type | Required | Description |
voidedStatementId | string | true | The identifier of the voided statement to request. |
attachments | boolean | false | Whether to return the attachment(s) associated with the voided statement, if any. |
format | string | false | What human readable names and descriptions are included in the voided statement.
|
This method returns an
AxiosPromise with the success data containing the Statement of the supplied voidedStatementId.When getting a statement with
attachments: true, the success data is returned as an array. The first array item is of type Statement, and the following are of type Part and are the attachments supplied with the statement.