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Triggers (view source)

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=== Http Examples ===
=== Http Examples ===
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See '''[[Trigger Examples#Http Examples]]'''.
==== Currency Conversion ====
Suppose the library contains two fields: PriceUSD and PriceEUR.
The user will enter the value in PriceUSD and the value in Euros will appear in PriceEUR according to the current exchange rate.
 
:; Add new trigger: Set Event '''Create a new entry''' and Phase '''After saving the entry'''. It will run asynchronously.
 
:'''Trigger script:'''
<source lang="javascript">
result = http().get("http://api.fixer.io/latest?base=USD"); // Use http://fixer.io/ for
                                                            // conversion rate in JSON
usdToEur = JSON.parse(result.body)["rates"]["Eur"];        // Use JavaScript object JSON
                                                            // to parse the result
entry().set("PriceEUR",
    entry().field( "PriceUSD") * usdToEur );                // PriceUSD * conversion rate
                                                            // for value for PriceEUR
</source>
<br/>
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==== Creating a Task in the Todoist App ====
[https://todoist.com Todoist] — A Web service and mobile app for task management. Todoist allows task creation via API [https://developer.todoist.com/].
In the following example of task creation, text will be taken from the Memento library entry.
 
:; Add a new trigger: Set Event to '''Creating a new entry''' or perhaps '''Update an entry'''. Set Phase as appropriate.
:'''Trigger script:'''
<source lang="javascript">
// Create a JSON command for Todoist task creation
//    using the format described in [https://develop.todoist.com/#add-an-item].
// This command should include a unique identifier
//    created using the guid() global function.
var commands =
    '[{"uuid":"' + guid() + '","temp_id":"' + guid() +
    '","type":"item_add","args":{"content":"' + entry().field("Task") + '"}}]';
 
// Execute the HTTP request. An attribute called '''token''' is used
//    for authorization in Todoist.
// It is available in the Todoist Account setting.
// Since the text of the task can include symbols
//    not allowed in a URL request,
//    use the standard function encodeURIComponent() to filter them out.
result = http().get("https://todoist.com/API/v7/sync?token=15281e8e4d499dаff817af0b14112eac3176f9dc&commands=" +
    encodeURIComponent(commands));
 
// Show the user a message indicating successful creation of the task.
if (result.code == 200)
    message('Task has been successfully created");
</source>
<br/>
<br/>
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