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@ -282,17 +282,17 @@ If the validation requires complex custom business logic and/or needs informatio
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from external sources, you can use :ref:`Actions <actions>` to perform your
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validation.
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**Example:** Check with an external service that an author's name is not black-listed
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**Example:** Check with an external service that an author's name is not deny-listed
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before inserting them.
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Let's assume we have an external service that stores and manages black-listed authors.
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Before inserting an author we need to check with this service if they are black-listed
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Let's assume we have an external service that stores and manages deny-listed authors.
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Before inserting an author we need to check with this service if they are deny-listed
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or not.
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The validation process looks as follows:
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.. thumbnail:: /img/graphql/manual/schema/diagram-actions-data-validation.png
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:alt: validation using actions: article not blacklisted
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:alt: validation using actions: article not deny-listed
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:width: 60%
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@ -311,26 +311,26 @@ The following is a sample code that could be added to the event handler to imple
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.. code-block:: javascript
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function getBlacklistedAuthorsFromApi() {
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// make external api call & return black-listed authors list
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function getDenylistedAuthorsFromApi() {
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// make external api call & return deny-listed authors list
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}
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function insertAuthorViaHasura() {
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// run insert_author mutation & return response
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}
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const blacklistedAuthors = getBlacklistedAuthorsFromApi();
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const denylistedAuthors = getDenylistedAuthorsFromApi();
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if (blacklistedAuthors.includes(author.name)) {
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return res.status(400).json({ message: "Author is blacklisted" });
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if (denylistedAuthors.includes(author.name)) {
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return res.status(400).json({ message: "Author is deny-listed" });
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} else {
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const insertAuthorResponse = insertAuthorViaHasura();
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return res.json(insertAuthorResponse);
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}
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When we now insert an author, our action handler will be called and it will check if the author is black-listed.
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If it's not, the author will be inserted and the ``id`` will be returned. If the author is black-listed,
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When we now insert an author, our action handler will be called and it will check if the author is deny-listed.
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If it's not, the author will be inserted and the ``id`` will be returned. If the author is deny-listed,
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we get the following error message:
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.. graphiql::
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@ -349,7 +349,7 @@ we get the following error message:
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"path": "$",
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"code": "unexpected"
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},
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"message": "Author is blacklisted"
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"message": "Author is deny-listed"
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}
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]
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}
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