問題描述
當使用 karras 和 clojure 給出字段時，如何更新 MongoDB 中的文檔？ (How to update a Document in MongoDB when a field is given with karras & clojure?)
I have a Collection in MongoDB, I need to update a certain Documents on that, when a field is given in that Document with karras API {A clojure wrapper to the mongo java driver } in clojure web application?
I've come up with this solution, but, it's not working as I expect.
(ns addressbook.repository
(:use karras.core
karras.collection
karras.sugar))
(def test-db (collection (connect) :mydb :user))
(defn no-of-docs []
(count-docs test-db))
(defn insert-rec [rec]
(insert test-db rec))
(defn fetch-rec []
(fetch-all test-db))
(defn filter-db [data]
(map #(dissoc % :_id) data))
(defn delete-rec [rec]
(delete test-db (where (eq (str (:name rec)) (str :name)))))
mydb is the Database in my MongoDB, and user is the Collection on which I saves some Documents. I need to delete the Document where :name field matches with the rec map's :name field which I passed to that delete-rec function.
Thanks.
參考解法
方法 1:
Try:
(delete test-db (where (eq :name (:name rec))))
(by Abimaran Kugathasan、mac)