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@ -585,6 +585,13 @@ import Yesod.Form.Nic (YesodNic, nicHtmlField)
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instance YesodNic Yosog
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</code>
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<small>Remark: it is a best practice to add the YesodNic instance inside `Foundation.hs`.
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I put this definition here to make things easier but you should see a warning about this orphan instance.
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To put the include inside Foundation.hs is left as an exercice to the reader.</small>
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<small>_Hint: Do not forget to put `YesodNic` and `nicHtmlField` inside the exported objects of the module._
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</small>
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<code class="haskell">
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entryForm :: Form Article
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entryForm = renderDivs $ Article
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@ -598,13 +605,6 @@ If you are curious you can take a look at Applicative Functor.
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You just have to remember `areq` is for required form input.
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Its arguments being: `areq type label default_value`.
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<small>Remark: it is a best practice to add the YesodNic instance inside `Foundation.hs`.
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I put this definition here to make things easier but you should see a warning about this orphan instance.
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To put the include inside Foundation.hs is left as an exercice to the reader.</small>
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<small>_Hint: Do not forget to put `YesodNic` and `nicHtmlField` inside the exported objects of the module._
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</small>
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<code class="haskell">
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-- The view showing the list of articles
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getBlogR :: Handler RepHtml
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@ -586,6 +586,13 @@ import Yesod.Form.Nic (YesodNic, nicHtmlField)
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instance YesodNic Yosog
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</code>
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<small>Remark: it is a best practice to add the YesodNic instance inside `Foundation.hs`.
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I put this definition here to make things easier but you should see a warning about this orphan instance.
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To put the include inside Foundation.hs is left as an exercice to the reader.</small>
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<small>_Hint: Do not forget to put `YesodNic` and `nicHtmlField` inside the exported objects of the module._
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</small>
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<code class="haskell">
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entryForm :: Form Article
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entryForm = renderDivs $ Article
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@ -654,17 +661,14 @@ postBlogR = do
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case res of
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FormSuccess article -> do
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articleId <- runDB $ insert article
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setMessage $ (articleTitle article) ++. " created"
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setMessage $ toHtml $ (articleTitle article) <> " created"
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redirect RedirectPermanent $ ArticleR articleId
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_ -> defaultLayout $ do
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setTitle "Please correct your entry form"
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$(widgetFile "articleAddError")
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where
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(++.) t s = toHtml $ T.append t (T.pack s)
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</code>
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This function should be used to create a new article.
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The `(++.)` local function is just a trick to make an append occurs within the right type.
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We handle the form response.
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If there is an error we display an error page.
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For example if we left some required value blank.
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@ -591,6 +591,13 @@ import Yesod.Form.Nic (YesodNic, nicHtmlField)
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instance YesodNic Yosog
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</code>
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<small>Remark: it is a best practice to add the YesodNic instance inside `Foundation.hs`.
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I put this definition here to make things easier but you should see a warning about this orphan instance.
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To put the include inside Foundation.hs is left as an exercice to the reader.</small>
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<small>_Hint: Do not forget to put `YesodNic` and `nicHtmlField` inside the exported objects of the module._
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</small>
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<code class="haskell">
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entryForm :: Form Article
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entryForm = renderDivs $ Article
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@ -604,13 +611,6 @@ If you are curious you can take a look at Applicative Functor.
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You just have to remember `areq` is for required form input.
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Its arguments being: `areq type label default_value`.
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<small>Remark: it is a best practice to add the YesodNic instance inside `Foundation.hs`.
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I put this definition here to make things easier but you should see a warning about this orphan instance.
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To put the include inside Foundation.hs is left as an exercice to the reader.</small>
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<small>_Hint: Do not forget to put `YesodNic` and `nicHtmlField` inside the exported objects of the module._
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</small>
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<code class="haskell">
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-- The view showing the list of articles
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getBlogR :: Handler RepHtml
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@ -683,6 +683,13 @@ handle Html in forms.</p>
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<span class="Keyword">instance</span> <span class="Constant">YesodNic</span> <span class="Constant">Yosog</span>
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</pre>
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<p><small>Remark: it is a best practice to add the YesodNic instance inside <code>Foundation.hs</code>.
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I put this definition here to make things easier but you should see a warning about this orphan instance.
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To put the include inside Foundation.hs is left as an exercice to the reader.</small></p>
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<p><small><em>Hint: Do not forget to put <code>YesodNic</code> and <code>nicHtmlField</code> inside the exported objects of the module.</em>
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</small></p>
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<pre class="twilight">
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<span class="Entity">entryForm</span> :: <span class="Constant">Form</span> <span class="Constant">Article</span>
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entryForm = renderDivs $ <span class="Constant">Article</span>
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@ -696,13 +703,6 @@ If you are curious you can take a look at Applicative Functor.
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You just have to remember <code>areq</code> is for required form input.
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Its arguments being: <code>areq type label default_value</code>.</p>
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<p><small>Remark: it is a best practice to add the YesodNic instance inside <code>Foundation.hs</code>.
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I put this definition here to make things easier but you should see a warning about this orphan instance.
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To put the include inside Foundation.hs is left as an exercice to the reader.</small></p>
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<p><small><em>Hint: Do not forget to put <code>YesodNic</code> and <code>nicHtmlField</code> inside the exported objects of the module.</em>
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</small></p>
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<pre class="twilight">
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<span class="Comment"><span class="Comment">--</span> The view showing the list of articles</span>
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<span class="Entity">getBlogR</span> :: <span class="Constant">Handler</span> <span class="Constant">RepHtml</span>
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@ -934,7 +934,7 @@ The example on also add a comment system.</p>
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</div>
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<div id="lastmod">
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Created: 01/15/2012
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Modified: 01/18/2012
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Modified: 01/19/2012
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</div>
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<div>
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Entirely done with
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@ -684,6 +684,13 @@ handle Html in forms.</p>
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<span class="Keyword">instance</span> <span class="Constant">YesodNic</span> <span class="Constant">Yosog</span>
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</pre>
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<p><small>Remark: it is a best practice to add the YesodNic instance inside <code>Foundation.hs</code>.
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I put this definition here to make things easier but you should see a warning about this orphan instance.
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To put the include inside Foundation.hs is left as an exercice to the reader.</small></p>
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<p><small><em>Hint: Do not forget to put <code>YesodNic</code> and <code>nicHtmlField</code> inside the exported objects of the module.</em>
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</small></p>
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<pre class="twilight">
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<span class="Entity">entryForm</span> :: <span class="Constant">Form</span> <span class="Constant">Article</span>
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entryForm = renderDivs $ <span class="Constant">Article</span>
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@ -754,17 +761,14 @@ postBlogR = <span class="Keyword">do</span>
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<span class="Keyword">case</span> res <span class="Keyword">of</span>
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<span class="Constant">FormSuccess</span> article -> <span class="Keyword">do</span>
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articleId <- runDB $ insert article
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setMessage $ (articleTitle article) ++. <span class="String"><span class="String">"</span> created<span class="String">"</span></span>
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setMessage $ toHtml $ (articleTitle article) <> <span class="String"><span class="String">"</span> created<span class="String">"</span></span>
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redirect <span class="Constant">RedirectPermanent</span> $ <span class="Constant">ArticleR</span> articleId
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_ -> defaultLayout $ <span class="Keyword">do</span>
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setTitle <span class="String"><span class="String">"</span>Please correct your entry form<span class="String">"</span></span>
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$(widgetFile <span class="String"><span class="String">"</span>articleAddError<span class="String">"</span></span>)
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<span class="Keyword">where</span>
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<span class="Entity">(++.)</span> t s = toHtml $ <span class="Constant">T</span>.append t (<span class="Constant">T</span>.pack s)
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</pre>
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<p>This function should be used to create a new article.
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The <code>(++.)</code> local function is just a trick to make an append occurs within the right type.
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We handle the form response.
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If there is an error we display an error page.
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For example if we left some required value blank.
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