Bump part3 and part4

advanced/part3/README.md

@@ -1,16 +0,0 @@
-# Part 3
-
-To build everything, `cd` into this `part3/` directory and run:
-
-```shell
-elm make src/Main.elm --output=../server/public/elm.js
-```
-
-Then open [http://localhost:3000](http://localhost:3000) in your browser.
-
-## Exercise
-
-Resolve the TODOs in these files:
-* `src/Page/Home.elm`
-* `src/Page/Settings.elm`
-* `src/Page/Article.elm`

advanced/part4/README.md

@@ -10,4 +10,7 @@ Then open [http://localhost:3000](http://localhost:3000) in your browser.
 
 ## Exercise
 
-Open `src/Article/Feed.elm` in your editor and resolve the TODO there.
+Resolve the TODOs in these files:
+* `src/Page/Home.elm`
+* `src/Page/Settings.elm`
+* `src/Page/Article.elm`

advanced/part4/src/Article/Feed.elm

@@ -110,50 +110,11 @@ viewArticles timeZone (Model { articles, sources, session }) =
             FeedSources.selected sources
 
         pagination =
-            viewPaginatedList articles (limit feedSource)
+            PaginatedList.view ClickedFeedPage articles (limit feedSource)
     in
     List.append articlesHtml [ pagination ]
 
 
-{-| 👉 TODO Move this logic into PaginatedList.view and make it reusable,
-so we can use it on other pages too!
-💡 HINT: Make `PaginatedList.view` return `Html msg` instead of `Html Msg`. (The function will need to accept an extra argument for this to work.)
--}
-viewPaginatedList : PaginatedList a -> Int -> Html Msg
-viewPaginatedList paginatedList resultsPerPage =
-    let
-        totalPages =
-            ceiling (toFloat (PaginatedList.total paginatedList) / toFloat resultsPerPage)
-
-        activePage =
-            PaginatedList.page paginatedList
-
-        viewPageLink currentPage =
-            pageLink currentPage (currentPage == activePage)
-    in
-    if totalPages > 1 then
-        List.range 1 totalPages
-            |> List.map viewPageLink
-            |> ul [ class "pagination" ]
-
-    else
-        Html.text ""
-
-
-pageLink : Int -> Bool -> Html Msg
-pageLink targetPage isActive =
-    li [ classList [ ( "page-item", True ), ( "active", isActive ) ] ]
-        [ a
-            [ class "page-link"
-            , onClick (ClickedFeedPage targetPage)
-
-            -- The RealWorld CSS requires an href to work properly.
-            , href ""
-            ]
-            [ text (String.fromInt targetPage) ]
-        ]
-
-
 viewPreview : Maybe Cred -> Time.Zone -> Article Preview -> Html Msg
 viewPreview maybeCred timeZone article =
     let

advanced/part4/src/Page/Home.elm

@@ -84,19 +84,8 @@ view model =
             [ viewBanner
             , div [ class "container page" ]
                 [ div [ class "row" ]
-                    [ div [ class "col-md-9" ] <|
-                        case model.feed of
-                            Loaded feed ->
-                                viewFeed model.timeZone feed
-
-                            Loading ->
-                                []
-
-                            LoadingSlowly ->
-                                [ Loading.icon ]
-
-                            Failed ->
-                                [ Loading.error "feed" ]
+                    [ div [ class "col-md-9" ]
+                        (viewFeed model)
                     , div [ class "col-md-3" ] <|
                         case model.tags of
                             Loaded tags ->
@@ -130,11 +119,25 @@ viewBanner =
         ]
 
 
-viewFeed : Time.Zone -> Feed.Model -> List (Html Msg)
-viewFeed timeZone feed =
+{-| 👉 TODO refactor this to accept narrower types than the entire Model.
+💡 HINT: It may end up with multiple arguments!
+-}
+viewFeed : Model -> List (Html Msg)
+viewFeed model =
+    case model.feed of
+        Loaded feed ->
             div [ class "feed-toggle" ]
                 [ Feed.viewFeedSources feed |> Html.map GotFeedMsg ]
-        :: (Feed.viewArticles timeZone feed |> List.map (Html.map GotFeedMsg))
+                :: (Feed.viewArticles model.timeZone feed |> List.map (Html.map GotFeedMsg))
+
+        Loading ->
+            []
+
+        LoadingSlowly ->
+            [ Loading.icon ]
+
+        Failed ->
+            [ Loading.error "feed" ]
 
 
 viewTags : List Tag -> Html Msg

advanced/part4/src/Page/Settings.elm

@@ -98,6 +98,10 @@ type ValidForm
 
 view : Model -> { title : String, content : Html Msg }
 view model =
+    let
+        form =
+            viewForm model
+    in
     { title = "Settings"
     , content =
         case Session.cred model.session of
@@ -109,7 +113,7 @@ view model =
                                 [ h1 [ class "text-xs-center" ] [ text "Your Settings" ]
                                 , ul [ class "error-messages" ]
                                     (List.map viewProblem model.problems)
-                                , viewForm cred model.form
+                                , form
                                 ]
                             ]
                         ]
@@ -120,8 +124,20 @@ view model =
     }
 
 
-viewForm : Cred -> Form -> Html Msg
-viewForm cred form =
+{-| 👉 TODO refactor this to accept narrower types than the entire Model.
+💡 HINT: It may end up with multiple arguments!
+-}
+viewForm : Model -> Html Msg
+viewForm model =
+    let
+        form =
+            model.form
+    in
+    case Session.cred model.session of
+        Nothing ->
+            text ""
+
+        Just cred ->
             Html.form [ onSubmit (SubmittedForm cred) ]
                 [ fieldset []
                     [ fieldset [ class "form-group" ]

advanced/part4/src/PaginatedList.elm

@@ -1,4 +1,4 @@
-module PaginatedList exposing (PaginatedList, fromList, map, mapPage, page, total, values)
+module PaginatedList exposing (PaginatedList, fromList, map, mapPage, page, total, values, view)
 
 import Html exposing (Html, a, li, text, ul)
 import Html.Attributes exposing (class, classList, href)
@@ -61,3 +61,38 @@ mapPage transform (PaginatedList info) =
 
 
 -- VIEW
+
+
+view : (Int -> msg) -> PaginatedList a -> Int -> Html msg
+view toMsg list resultsPerPage =
+    let
+        totalPages =
+            ceiling (toFloat (total list) / toFloat resultsPerPage)
+
+        activePage =
+            page list
+
+        viewPageLink currentPage =
+            pageLink toMsg currentPage (currentPage == activePage)
+    in
+    if totalPages > 1 then
+        List.range 1 totalPages
+            |> List.map viewPageLink
+            |> ul [ class "pagination" ]
+
+    else
+        Html.text ""
+
+
+pageLink : (Int -> msg) -> Int -> Bool -> Html msg
+pageLink toMsg targetPage isActive =
+    li [ classList [ ( "page-item", True ), ( "active", isActive ) ] ]
+        [ a
+            [ class "page-link"
+            , onClick (toMsg targetPage)
+
+            -- The RealWorld CSS requires an href to work properly.
+            , href ""
+            ]
+            [ text (String.fromInt targetPage) ]
+        ]

advanced/part5/README.md

@@ -0,0 +1,13 @@
+# Part 5
+
+To build everything, `cd` into this `part5/` directory and run:
+
+```shell
+elm make src/Main.elm --output=../server/public/elm.js
+```
+
+Then open [http://localhost:3000](http://localhost:3000) in your browser.
+
+## Exercise
+
+Open `src/Article/Feed.elm` in your editor and resolve the TODO there.

advanced/part5/src/Article/Feed.elm

@@ -110,11 +110,50 @@ viewArticles timeZone (Model { articles, sources, session }) =
             FeedSources.selected sources
 
         pagination =
-            PaginatedList.view ClickedFeedPage articles (limit feedSource)
+            viewPaginatedList articles (limit feedSource)
     in
     List.append articlesHtml [ pagination ]
 
 
+{-| 👉 TODO Move this logic into PaginatedList.view and make it reusable,
+so we can use it on other pages too!
+💡 HINT: Make `PaginatedList.view` return `Html msg` instead of `Html Msg`. (The function will need to accept an extra argument for this to work.)
+-}
+viewPaginatedList : PaginatedList a -> Int -> Html Msg
+viewPaginatedList paginatedList resultsPerPage =
+    let
+        totalPages =
+            ceiling (toFloat (PaginatedList.total paginatedList) / toFloat resultsPerPage)
+
+        activePage =
+            PaginatedList.page paginatedList
+
+        viewPageLink currentPage =
+            pageLink currentPage (currentPage == activePage)
+    in
+    if totalPages > 1 then
+        List.range 1 totalPages
+            |> List.map viewPageLink
+            |> ul [ class "pagination" ]
+
+    else
+        Html.text ""
+
+
+pageLink : Int -> Bool -> Html Msg
+pageLink targetPage isActive =
+    li [ classList [ ( "page-item", True ), ( "active", isActive ) ] ]
+        [ a
+            [ class "page-link"
+            , onClick (ClickedFeedPage targetPage)
+
+            -- The RealWorld CSS requires an href to work properly.
+            , href ""
+            ]
+            [ text (String.fromInt targetPage) ]
+        ]
+
+
 viewPreview : Maybe Cred -> Time.Zone -> Article Preview -> Html Msg
 viewPreview maybeCred timeZone article =
     let

advanced/part5/src/Page/Home.elm

@@ -84,8 +84,19 @@ view model =
             [ viewBanner
             , div [ class "container page" ]
                 [ div [ class "row" ]
-                    [ div [ class "col-md-9" ]
-                        (viewFeed model)
+                    [ div [ class "col-md-9" ] <|
+                        case model.feed of
+                            Loaded feed ->
+                                viewFeed model.timeZone feed
+
+                            Loading ->
+                                []
+
+                            LoadingSlowly ->
+                                [ Loading.icon ]
+
+                            Failed ->
+                                [ Loading.error "feed" ]
                     , div [ class "col-md-3" ] <|
                         case model.tags of
                             Loaded tags ->
@@ -119,25 +130,11 @@ viewBanner =
         ]
 
 
-{-| 👉 TODO refactor this to accept narrower types than the entire Model.
-💡 HINT: It may end up with multiple arguments!
--}
-viewFeed : Model -> List (Html Msg)
-viewFeed model =
-    case model.feed of
-        Loaded feed ->
+viewFeed : Time.Zone -> Feed.Model -> List (Html Msg)
+viewFeed timeZone feed =
     div [ class "feed-toggle" ]
         [ Feed.viewFeedSources feed |> Html.map GotFeedMsg ]
-                :: (Feed.viewArticles model.timeZone feed |> List.map (Html.map GotFeedMsg))
-
-        Loading ->
-            []
-
-        LoadingSlowly ->
-            [ Loading.icon ]
-
-        Failed ->
-            [ Loading.error "feed" ]
+        :: (Feed.viewArticles timeZone feed |> List.map (Html.map GotFeedMsg))
 
 
 viewTags : List Tag -> Html Msg

advanced/part5/src/Page/Settings.elm

@@ -98,10 +98,6 @@ type ValidForm
 
 view : Model -> { title : String, content : Html Msg }
 view model =
-    let
-        form =
-            viewForm model
-    in
     { title = "Settings"
     , content =
         case Session.cred model.session of
@@ -113,7 +109,7 @@ view model =
                                 [ h1 [ class "text-xs-center" ] [ text "Your Settings" ]
                                 , ul [ class "error-messages" ]
                                     (List.map viewProblem model.problems)
-                                , form
+                                , viewForm cred model.form
                                 ]
                             ]
                         ]
@@ -124,20 +120,8 @@ view model =
     }
 
 
-{-| 👉 TODO refactor this to accept narrower types than the entire Model.
-💡 HINT: It may end up with multiple arguments!
--}
-viewForm : Model -> Html Msg
-viewForm model =
-    let
-        form =
-            model.form
-    in
-    case Session.cred model.session of
-        Nothing ->
-            text ""
-
-        Just cred ->
+viewForm : Cred -> Form -> Html Msg
+viewForm cred form =
     Html.form [ onSubmit (SubmittedForm cred) ]
         [ fieldset []
             [ fieldset [ class "form-group" ]

advanced/part5/src/PaginatedList.elm

@@ -1,4 +1,4 @@
-module PaginatedList exposing (PaginatedList, fromList, map, mapPage, page, total, values, view)
+module PaginatedList exposing (PaginatedList, fromList, map, mapPage, page, total, values)
 
 import Html exposing (Html, a, li, text, ul)
 import Html.Attributes exposing (class, classList, href)
@@ -61,38 +61,3 @@ mapPage transform (PaginatedList info) =
 
 
 -- VIEW
-
-
-view : (Int -> msg) -> PaginatedList a -> Int -> Html msg
-view toMsg list resultsPerPage =
-    let
-        totalPages =
-            ceiling (toFloat (total list) / toFloat resultsPerPage)
-
-        activePage =
-            page list
-
-        viewPageLink currentPage =
-            pageLink toMsg currentPage (currentPage == activePage)
-    in
-    if totalPages > 1 then
-        List.range 1 totalPages
-            |> List.map viewPageLink
-            |> ul [ class "pagination" ]
-
-    else
-        Html.text ""
-
-
-pageLink : (Int -> msg) -> Int -> Bool -> Html msg
-pageLink toMsg targetPage isActive =
-    li [ classList [ ( "page-item", True ), ( "active", isActive ) ] ]
-        [ a
-            [ class "page-link"
-            , onClick (toMsg targetPage)
-
-            -- The RealWorld CSS requires an href to work properly.
-            , href ""
-            ]
-            [ text (String.fromInt targetPage) ]
-        ]