Validation 使用map构建Noir验证规则
我有动态生成的表单,所以我尝试通过以下方式验证它们:Validation 使用map构建Noir验证规则,validation,clojure,noir,Validation,Clojure,Noir,我有动态生成的表单,所以我尝试通过以下方式验证它们: (defn valid? [media-id data] ;media-id it's just a number, data is the form input (let [fields (common/get-fields-to-show media-id)] ; list of strings (the field names) (map (fn [f] (vali/rule (vali/has-val
(defn valid? [media-id data] ;media-id it's just a number, data is the form input
(let [fields (common/get-fields-to-show media-id)] ; list of strings (the field names)
(map (fn [f]
(vali/rule (vali/has-value? ((keyword f) data))
[(keyword f) "Write something!!"]))
fields))
(not (apply vali/errors? (map keyword fields))))
(defn valid? [media-id data]
(let [fields (common/get-fields-to-show media-id)
f1 (first fields)
f2 (second fields)]
(vali/rule (vali/has-value? ((keyword f1) data))
[(keyword f1) "Testing"])
(vali/rule (vali/has-value? ((keyword f2) data))
[(keyword f2) "Testing"])
(not (apply vali/errors? (map keyword fields))))
但这行不通。没有任何异常或消息,valid?
的计算结果为true
,因此,尽管所有字段都为空,但流程仍将继续,就好像没有错误一样。我甚至尝试了(vali/has value?nil)
强制执行错误,但没有任何更改
在实验中,我删除了地图
,选取了两个特定字段,以这种方式“手动”构建它们的规则:
(defn valid? [media-id data] ;media-id it's just a number, data is the form input
(let [fields (common/get-fields-to-show media-id)] ; list of strings (the field names)
(map (fn [f]
(vali/rule (vali/has-value? ((keyword f) data))
[(keyword f) "Write something!!"]))
fields))
(not (apply vali/errors? (map keyword fields))))
(defn valid? [media-id data]
(let [fields (common/get-fields-to-show media-id)
f1 (first fields)
f2 (second fields)]
(vali/rule (vali/has-value? ((keyword f1) data))
[(keyword f1) "Testing"])
(vali/rule (vali/has-value? ((keyword f2) data))
[(keyword f2) "Testing"])
(not (apply vali/errors? (map keyword fields))))
它对那些幸运的领域非常有效
我怀疑它与(动态声明的东西)有关,但我不确定。不要使用
map
进行操作序列<代码>映射用于将序列转换为其他序列。您需要使用的是doseq
而不是:
(map (fn [f]
(vali/rule (vali/has-value? ((keyword f) data))
[(keyword f) "Write something!!"]))
fields))
使用以下命令:
(doseq [f fields]
(vali/rule (vali/has-value? ((keyword f) data))
[(keyword f) "Write something!!"]))
map返回一个惰性seq。您可以使用doall强制求值:
(doall (map ...