Saving to Strapi

Our next goal is to be able to save the edits we've made back to Strapi. We'll be doing this with a pretty simple GraphQL mutation.

First, since we're dealing with image uploading we'll need access to the CMS object again so that the Strapi media store can help us out.


- import { useForm, usePlugin } from "tinacms";
+ import { useCMS, useForm, usePlugin } from "tinacms";
  // ...

  export default function Post({ post: initialPost, morePosts, preview }) {
+   const cms = useCMS();
    // ...

Now we'll replace the dummy onSubmit that we created earlier with a function that calls a GraphQL mutation to when we submit the form.


    onSubmit: async (values) => {
      const saveMutation = `
      mutation UpdateBlogPost(
        $id: ID!
        $title: String
        $content: String
        $coverImageId: ID
      ) {
          input: {
            where: { id: $id }
            data: { title: $title, content: $content, coverImage: $coverImageId}
        ) {
          blogPost {
      const response = await cms.api.strapi.fetchGraphql(
          title: values.title,
          content: values.content,
      if ( {
        cms.alerts.success("Changes Saved");
      } else {
        cms.alerts.error("Error saving changes");

Take a read through the mutation, it's pretty simple! Strings prepended with a $ are variables that we send as a second argument to the fetchGraphql function.

With this in place, reload your site and enter edit mode. Now make some changes to a blog post and click the save button. If everything has gone well, those changes will have been sent to Strapi and saved.

Last Edited: September 22, 2020