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Can a callout be made from an apex trigger?
As we know that trigger runs synchronously we cannot make a callout to external system from trigger, this is because a trigger cannot wait for the execution to complete as this can cause performance issue, however an apex trigger can invoke a callout when the callout is made from a method which is defined as asynchronous.
How to bypass apex OAuth 2.0 Pop Up?
Since it exists, it then sends that param to another method, which makes an API call to get the access token & refresh token. I am using a trigger that calls a class which prepares the JSON to be sent to the Google Calendar API v3. I’m trying to bypass the OAuth 2.0 pop-up that comes, maybe by using a static key or using the ‘Connected App’ option.
Which is the best example of apex OAuth?
Looks like you are trying to pass the username/pw, which kinda defeats the whole purpose of oAuth (to protect those). The flow I recommend is supposed to be like this: 2) My Autorun method in the VF controller fires on page load. If there’s no param (there wouldn’t be at this point), then nothing happens 3) User clicks button on VF page.
How does AutoRun work in apex OAuth 2.0?
You don’t “detect the redirect”, you have the redirct point to a VF page and have an autorun method grab any param in the URL. If the URL contains the “success code”, then you know it succeeded and you got there as a result of the redirect.
Are there callout limits within batch apex?
Does the below limit…. ‘A single Apex transaction can make a maximum of 10 callouts to an HTTP request or an API call.’ Apply within a batch transaction? For instance if I can write the batch to iterate on 10 records at a time, will I be able to get by this limit?
How to make a HTTP callout from triggers?
To get something from the other end spin up a Rest Endpoint with a httppost method and provide the endpoint to the other vendor so that he can send the data back to you once the transaction is complete at his end. This way you do not have to wait for the transaction to complete and use future for making callouts!!!
Can a future method be called from apex?
The use of a Queueable Apex method is likely preferable to a Future method. If another future or batch method is what triggers your trigger, you’ll encounter this error message. Future method cannot be called from a future or batch method.
Can a web service be called from a trigger?
We cannot call external web services synchronously from triggers, because calling a web service synchronously from triggers will hold up the database transaction until the callout completed. This will impact performance for other transactions.