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Query objects are the javascript variables generated for every Query created under a datasource |
Each query object contains a run function that is used to execute the query. The run function is asynchronous by nature and can be chained using the callbacks in the function signature.
run(onSuccess: Function, onError: Function, params: Object): void| Argument Name | Description |
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| onSuccess | The function to be executed when the run method succeeds |
| onError | The function to be executed when the run method fails |
| params | The additional params to be passed to the run method |
Most Queries read values directly from entities as global variables. In some cases such as running a query inside a loop, parameters may need to be passed to the query with values contextual to the execution. This can be achieved using the params argument of the run signature. Params sent to a query can be accessed using the this keyword
{{ this.params.key }}The onSuccess Function is run when a query is run successfully. The function returns the response of the query and the params passed to it in the callback arguments.
onSuccess(response, params): voidThe onError Function is run when a query execution fails. The function returns the response of the query and the params passed to it.
onError(response, params): voidEach query stores the data from its latest run inside its data property. This property is populated only if the query successfully executes and can be accessed as
{{ Query1.data }}The data type of this property depends on the data