spec-based form validation

resources/app/stylesheets/app.less

@@ -1,4 +1,5 @@
 @ci-color: #ccc;
+@error-color: #e00;
 @accent-color: #efefef;
 @border-stack: 1px solid @ci-color;
 @text-padding-v: .2rem;
@@ -32,7 +33,8 @@ a:active {
         "nav    main   sidebar"
         "footer footer footer";
     margin: auto;
-    max-width: 900px;
+    min-width: 900px;
+    width: 80%;
     border-top: ;
 
     nav {
@@ -106,11 +108,33 @@ form {
         grid-column: 2;
     }
 
+    .flash--error {
+        .flash;
+        border-color: @error-color;
+        
+        .flash__heading--error {
+            margin: 0;
+            background-color: @error-color;
+            color: white;
+            margin-top: -.7rem;
+            margin-left: -.7rem;
+            margin-right: -.7rem;
+        }
+    }
+    
     .flash {
-        grid-column: 1/3;
+        grid-column: 1 e("/") 3;
         .thin-border;
         border-left-width: @accent-border-width;
         padding: .7rem;
+
+        .flash__field {
+            font-style: italic;
+        }
+
+        .flash__pred {
+            font-family: monospace;
+        }
     }
 }
 

src/wanijo/auth/routes.clj

@@ -14,8 +14,7 @@
                   (hashers/check pw hash))]
     (if pwmatch
       (-> (redirect "/")
-          (assoc-in [:session :ident] uname)
-          (assoc-in [:session :unode] unode))
+          (assoc-in [:session :ident] uname))
       (-> (redirect "/login")
           (assoc :flash :invalid-credentials)))))
 

src/wanijo/handler.clj

@@ -4,6 +4,7 @@
             [compojure.route :as route]
             [ring.middleware.defaults :refer [wrap-defaults site-defaults]]
             [ring.util.response :as rur]
+            [ring.middleware.session.cookie :as session-cookie]
             [wanijo.auth.routes :refer [auth-routes]]
             [wanijo.home.routes :refer [home-routes]]
             [wanijo.schema.routes :refer [schema-routes]]))
@@ -23,4 +24,6 @@
 
 (def app
   (-> app-routes
-      (wrap-defaults site-defaults)))
+      (wrap-defaults (assoc-in site-defaults
+                               [:session :store]
+                               (session-cookie/cookie-store {:key "1234567890123456"})))))

src/wanijo/schema/routes.clj

@@ -1,5 +1,9 @@
 (ns wanijo.schema.routes
-  (:require [compojure.core :refer [defroutes GET]]
+  (:require [compojure.core :refer [defroutes GET POST]]
+            [ring.util.anti-forgery :refer [anti-forgery-field]]
+            [ring.util.response :as resp]
+            [hiccup.form :as hform]
+            [clojure.spec.alpha :as spec]
             [wanijo.domain.schema :as domain-schemas]
             [wanijo.view :as view]))
 
@@ -10,7 +14,8 @@
     (view/layout!
      :session session
      :content
-     [[:table
+     [[:h1 "Ali jaki ijo"]
+      [:table
        [:thead
         [:tr
          [:th "Nimi"]
@@ -19,7 +24,29 @@
         (for [schema schemas]
           [:tr
            [:td (:name schema)]
-           [:td (:created_at schema)]])]]])))
+           [:td (:created_at schema)]])]]
+      [:h1 "Pali sin e jaki ijo"]
+      (hform/form-to
+       [:post "/schema/new"]
+       (view/spec-to-errmsg ::new-schema req)
+       (hform/label "name" "Nimi")
+       (hform/text-field {:required "required"}
+                         "schema-name"
+                         (get-in req [:params :schema-name]))
+       (hform/submit-button "Kama")
+       (anti-forgery-field))])))
+
+(spec/def ::schema-name
+  (spec/and some? string? not-empty))
+
+(spec/def ::new-schema
+  (spec/keys :req-un [::schema-name]))
+
+(defn- new! [req]
+  (if (spec/valid? ::new-schema (:params req))
+    (resp/redirect "/schema")
+    (overview! req)))
 
 (defroutes schema-routes
-  (GET "/schema" [] overview!))
+  (GET "/schema" [] overview!)
+  (POST "/schema/new" [] new!))

src/wanijo/view.clj

@@ -1,6 +1,7 @@
 (ns wanijo.view
   (:require [hiccup.page :refer [html5
-                                 include-css]]))
+                                 include-css]]
+            [clojure.spec.alpha :as spec]))
 
 (defn btnlink
   ([target caption]
@@ -34,10 +35,28 @@
             (str "O, " ident)])]
         (when authed?
           [:section.header-content
-           (btnlink "/schema" "Jaki Ijo" "header-content__link")
+           (btnlink "/schema" "Jaki ijo" "header-content__link")
            (btnlink "/logout" "Lape" "header-content__link")])]
        [:nav (when authed? "nav")]
        (vec (concat [:main] content))
        [:aside (when authed? "aside")]
        [:footer
         [:small "Ilo pali e ijo"]]]])))
+
+(defn flash-error [content]
+  [:section.flash--error
+   [:h2.flash__heading--error "Pakala"]
+   content])
+
+(defn spec-to-errmsg [spec-key req]
+  (when-let [spec-data (and (not-empty (:params req))
+                            (spec/explain-data spec-key (:params req)))]
+    (flash-error
+     (->> (:clojure.spec.alpha/problems spec-data)
+          (map
+           (fn [prob]
+             [:p
+              "Field \""
+              [:span.flash__field (first (:path prob))]
+              "\" must comply to "
+              [:span.flash__pred (:pred prob)]]))))))