strapi/packages/strapi-plugin-content-manager/config/queries/bookshelf.js

module.exports = {

  find: async (params) => {
    const entries = await params.model
      .forge()
      .query({
        limit: Number(params.limit),
        orderBy: params.sort,
        offset: Number(params.skip),
      })
      .fetchAll();

    return entries;
  },

  count: async (params) => {
    const count = await params.model
      .forge()
      .count();

    return Number(count);
  },

  findOne: async (params) => {
    const where = {};
    where[params.primaryKey] = params.id;

    const entry = await params.model
      .forge(where)
      .fetch();

    return entry;
  },

  create: async (params) => {
    const entry = await params.model
      .forge()
      .save(params.values);

    return entry;
  },

  update: async (params) => {
    const where = {};
    where[params.primaryKey] = params.id;

    const entry = await params.model
      .forge(where)
      .save(params.values, {patch: true});

    return entry;
  },

  delete: async (params) => {
    const where = {};
    where[params.primaryKey] = params.id;

    const entry = await params.model
      .forge(where)
      .destroy();

    return entry;
  }
};