Upload Buffer using strapi upload

Community Packages Plugins
2

If anyone needs that, here is the solution that I implemented (based on strapi upload plugin code)

It works well in Strapi v4

const { Readable } = require("stream");

const getServiceUpload = (name) => {
  return strapi.plugin("upload").service(name);
};

const uploadAndLinkDocument = async (buffer, {filename, extension, mimeType, refId, ref, field, user}) => {
  const config = strapi.config.get("plugin.upload");

  // add generated document
  const entity = {
    name,
    hash: filename,
    ext: extension,
    mime: mimeType,
    size: buffer.length,
    provider: config.provider,
  };
  if (refId) {
    entity.related = [
      {
        id: refId,
        __type: ref,
        __pivot: { field },
      },
    ];
  }
  entity.getStream = () => Readable.from(buffer);
  await getServiceUpload("provider").upload(entity);

  const fileValues = { ...entity };
  if (user) {
    // created_by has a foreign key on admin_users. Here our user is a regular user, so it fails.
    // uncomment this only if the user you pass to the function is a strapi admin.
    /*fileValues[UPDATED_BY_ATTRIBUTE] = user.id;
    fileValues[CREATED_BY_ATTRIBUTE] = user.id;*/
  }

  const res = await strapi
    .query("plugin::upload.file")
    .create({ data: fileValues });
  return res;
};

ref is strapi reference to a model, like “api::model.model”

Hope this helps

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