Update image caption

DMehaffy · March 22, 2021, 1:42am

the service you are looking for is:

strapi/strapi/blob/a458eb8eedf0a9f03c737b70c93fd6fbf2dce158/packages/strapi-plugin-upload/services/Upload.js#L190-L204

    
      
          async updateFileInfo(id, { name, alternativeText, caption }, { user } = {}) {
            const dbFile = await this.fetch({ id });
          
          
  if (!dbFile) {
              throw strapi.errors.notFound('file not found');
            }
          
          
  const newInfos = {
              name: _.isNil(name) ? dbFile.name : name,
              alternativeText: _.isNil(alternativeText) ? dbFile.alternativeText : alternativeText,
              caption: _.isNil(caption) ? dbFile.caption : caption,
            };
          
          
  return this.update({ id }, newInfos, { user });
          },

You would call it with strapi.plugins.upload.services.upload.updateFileInfo(id, { name, alternativeText, caption }