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* whtie label revamp * minor changes * updated beta info in copilot docs * renamed gds to ds in overview doc of v2.15 onwards * updated multienv: renamed gds to ds, updated screenshot * updated multienv: app state description * updated superadmin wrt new licensing updates * licensing update: free trial * updates in licensing * changes after review * [docs]updated restapi with bearer auth * Update kubernetes-aks.md * Update openshift.md * Update ecs.md * Update ecs.md * Update kubernetes-gke.md * Update kubernetes.md * Update docker.md * Update docker.md * Update ecs.md * Update google-cloud-run.md * Update kubernetes-aks.md * Update kubernetes-gke.md * Update kubernetes.md * Update openshift.md * Update kubernetes-gke.md * Update kubernetes-aks.md * fixed ecs, removed heroku from 2.15 onwards * updated digitalocean doc * licensing doc changes and location * Update digitalocean.md * Update digitalocean.md * added v2.18.0 --------- Co-authored-by: Adish M <44204658+adishM98@users.noreply.github.com>
51 lines
3.1 KiB
Markdown
51 lines
3.1 KiB
Markdown
---
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id: run-query-at-specified-intervals
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title: Run query at specified intervals
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---
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In this how-to guide, we will learn how to make a query trigger at the specific intervals.
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- Let's go to the ToolJet dashboard and **create a new application**
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- Once the app builder opens up, drag a **table** component to canvas
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- Now, create a new REST API query from the query panel at the bottom of the app builder. We will be using the data from the mock **REST API** and then load the data on the table. Let's create a REST API, choose `GET` method from the dropdown, enter the endpoint `(https://jsonplaceholder.typicode.com/posts)`, name the query `post` and then **save and run** it
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<div style={{textAlign: 'center'}}>
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<img className="screenshot-full" src="/img/how-to/setinterval/query.png" alt="REST API query" width="600" />
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</div>
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- Go to the **Table properties** and add connect the query data to table by adding value to **table data** property which is `{{queries.post.data}}`
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<div style={{textAlign: 'center'}}>
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<img className="screenshot-full" src="/img/how-to/setinterval/data.png" alt="REST API query" width="300" />
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</div>
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- Now, we will create a RunJS query that will first set a variable called `interval` which will include the value returned by the `setInterval()` method that calls a function `countdown` at specified intervals. The countdown function has the code to trigger the `post` query that we created in the previous step.
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```js
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actions.setVariable('interval',setInterval(countdown, 5000));
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function countdown(){
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queries.post.run()
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}
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```
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- Or use **async**-**await** in the function, if you're triggering multiple actions:
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```js
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actions.setVariable('interval',setInterval(countdown, 5000));
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async function countdown(){
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await queries.restapi1.run()
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await queries.restapi2.run()
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await actions.showAlert('info','This is an information')
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}
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```
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- Go to the **Advanced** tab of the query, enable `Run query on page load?` this will trigger this RunJS query when the app is loaded. Name the query as `set` and **Save** it. Note that you will have to save the query and not `Save and Run` because doing it will trigger the query and you won't be able to stop the query unless you reload the page or go back to dashboard.
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<div style={{textAlign: 'center'}}>
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<img className="screenshot-full" src="/img/how-to/setinterval/set.png" alt="REST API query" width="700" />
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</div>
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- To prevent the query from triggering indefinitely, we will create another RunJS query that will make use of `clearInterval()` method. In this method we will get the value from the variable that we created in `set` query. Save this query as `clear`.
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```js
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clearInterval(variables.interval)
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```
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- Finally, let's add a **button** on to the canvas and add the **event handler** to the button to run the `clear` query.
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- Now, whenever the app will be loaded the **set** query will be triggered and will keep triggering the `post` query at the specified intervals. Whenever the user wants to **stop** the query they can click on the **button** to trigger the **clear** query which will clear the interval.
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