diff --git a/ui/.env.example b/ui/.env.example
new file mode 100644
index 0000000..5b737f7
--- /dev/null
+++ b/ui/.env.example
@@ -0,0 +1,2 @@
+# Url ohne abschlißenden Slash
+API_URL= http://localhost:8080
\ No newline at end of file
diff --git a/ui/.gitignore b/ui/.gitignore
index b21668d..76035c9 100644
--- a/ui/.gitignore
+++ b/ui/.gitignore
@@ -3,3 +3,4 @@ node_modules
 package-lock.json
 yarn.lock
 public
+/.env
diff --git a/ui/package.json b/ui/package.json
index f794272..bdbbd6e 100644
--- a/ui/package.json
+++ b/ui/package.json
@@ -19,6 +19,7 @@
     "@rollup/plugin-commonjs": "^15.0.0",
     "@rollup/plugin-node-resolve": "^9.0.0",
     "@rollup/plugin-replace": "^2.3.0",
+    "dotenv": "^8.2.0",
     "npm-run-all": "^4.1.3",
     "rollup": "^2.30.0",
     "rollup-plugin-svelte": "^6.0.0",
diff --git a/ui/rollup.config.js b/ui/rollup.config.js
index c05a512..7b165f5 100644
--- a/ui/rollup.config.js
+++ b/ui/rollup.config.js
@@ -3,6 +3,7 @@ import replace from '@rollup/plugin-replace';
 import resolve from '@rollup/plugin-node-resolve';
 import commonjs from '@rollup/plugin-commonjs';
 import { terser } from 'rollup-plugin-terser';
+import {config} from 'dotenv';
 
 const production = !process.env.ROLLUP_WATCH;
 
@@ -35,7 +36,8 @@ export default {
 		commonjs(),
 
 		replace({
-			'process.env.NODE_ENV': JSON.stringify(production ? 'production' : 'development')
+			'process.env.NODE_ENV': JSON.stringify(production ? 'production' : 'development'),
+            'env': JSON.stringify({...config().parsed /* attached the .env config*/})
 		}),
 
 		// If we're building for production (npm run build
diff --git a/ui/src/components/App.svelte b/ui/src/components/App.svelte
index 0852d11..0577043 100644
--- a/ui/src/components/App.svelte
+++ b/ui/src/components/App.svelte
@@ -45,52 +45,12 @@
 	addEventListener('pushstate', track);
 	addEventListener('popstate', track);
 
-
-    let w = {
-        "period": "2020#01",
-        "workingDays": 20,
-        "totalHours": "99:00:00",
-        "overtime": "10:22:00"
-    };
-    let weekly = {
-        "title" : "Wochenansicht",
-        "records" : [w, w]
-    };
-    let m = {
-        "period": "2020-01",
-        "workingDays": 20,
-        "totalHours": "99:00:00",
-        "overtime": "10:22:00"
-    };
-    let monthly = {
-        "title" : "Monatsansicht",
-        "records" : [m, m]
-    };
-    let y = {
-        "period": "2020",
-        "workingDays": 20,
-        "totalHours": "99:00:00",
-        "overtime": "10:22:00"
-    };
-    let yearly = {
-        "title" : "Jahresansicht",
-        "records" : [y, y]
-    };
-    let r = {
-        "workingDay": "2020-01-15",
-        "workingTime": "09:00:00"
-    };
-    let records = {
-        "title" : "Einträge",
-        "records" : [r, r]
-    };
-
 	const router = Navaid('/')
-		.on('/', () => run(import('../routes/Home.svelte'), weekly))
-		.on('/views/weekly', () => run(import('../routes/Views.svelte'), weekly))
-		.on('/views/monthly', () => run(import('../routes/Views.svelte'), monthly))
-		.on('/views/yearly', () => run(import('../routes/Views.svelte'), yearly))
-		.on('/working-hours', () => run(import('../routes/WorkingHours.svelte'), records))
+		.on('/', () => run(import('../routes/Home.svelte')))
+		.on('/views/weekly', () => run(import('../routes/WeeklyViews.svelte')))
+		.on('/views/monthly', () => run(import('../routes/MonthlyViews.svelte')))
+		.on('/views/yearly', () => run(import('../routes/YearlyViews.svelte')))
+		.on('/working-hours', () => run(import('../routes/WorkingHours.svelte')))
 		.listen();
 
 	onDestroy(router.unlisten);
diff --git a/ui/src/routes/Home.svelte b/ui/src/routes/Home.svelte
index 8041d2c..4a0fa9d 100644
--- a/ui/src/routes/Home.svelte
+++ b/ui/src/routes/Home.svelte
@@ -1,6 +1,5 @@
-<Views {params} />
+<Views />
 
 <script>
-    import Views from "./Views.svelte";
-    export let params;
+    import Views from "./WeeklyViews.svelte";
 </script>
\ No newline at end of file
diff --git a/ui/src/routes/MonthlyViews.svelte b/ui/src/routes/MonthlyViews.svelte
new file mode 100644
index 0000000..fd4166e
--- /dev/null
+++ b/ui/src/routes/MonthlyViews.svelte
@@ -0,0 +1,31 @@
+<script>
+    import Views from "./Views.svelte";
+    export let params;
+    params = {
+        title: 'Monatsansicht',
+        records: [],
+        isLoading: true
+    }
+    const View = {
+        'browse': () => {
+            fetch(env.API_URL + '/views/working-hours/monthly')
+                .then(res => {
+                    if (!res.ok) {
+                        throw new Error('Fail!');
+                    }
+                    return res.json();
+                })
+                .then(data => {
+                    params.records = data;
+                    params.isLoading = false;
+                })
+                .catch(err => {
+                    params.isLoading = false;
+                    console.log(err);
+                });
+        }
+    };
+    View.browse();
+</script>
+
+<Views {params} />
\ No newline at end of file
diff --git a/ui/src/routes/Views.svelte b/ui/src/routes/Views.svelte
index e61e5e4..8c7ee11 100644
--- a/ui/src/routes/Views.svelte
+++ b/ui/src/routes/Views.svelte
@@ -1,5 +1,6 @@
 <script>
     export let params;
+    console.log(params)
 </script>
 
 <svelte:head>
@@ -11,25 +12,29 @@
         <h1>{params.title}</h1>
     </header>
     <article>
-        <table>
-            <thead>
-            <tr>
-                <th>Zeitraum</th>
-                <th>Arbeitstage</th>
-                <th>Arbeitsstunden</th>
-                <th>Über- / Unterstunden</th>
-            </tr>
-            </thead>
-            <tbody>
-            {#each params.records as record}
+        {#if params.isLoading === true}
+            <p>Loading...</p>
+        {:else}
+            <table>
+                <thead>
                 <tr>
-                    <td>{record.period}</td>
-                    <td>{record.workingDays}</td>
-                    <td>{record.totalHours}</td>
-                    <td>{record.overtime}</td>
+                    <th>Zeitraum</th>
+                    <th>Arbeitstage</th>
+                    <th>Arbeitsstunden</th>
+                    <th>Über- / Unterstunden</th>
                 </tr>
-            {/each}
-            </tbody>
-        </table>
+                </thead>
+                <tbody>
+                {#each params.records as record}
+                    <tr>
+                        <td>{record.period}</td>
+                        <td>{record.workingDays}</td>
+                        <td>{record.totalHours}</td>
+                        <td>{record.overtime}</td>
+                    </tr>
+                {/each}
+                </tbody>
+            </table>
+        {/if}
     </article>
 </section>
\ No newline at end of file
diff --git a/ui/src/routes/WeeklyViews.svelte b/ui/src/routes/WeeklyViews.svelte
new file mode 100644
index 0000000..34eb07b
--- /dev/null
+++ b/ui/src/routes/WeeklyViews.svelte
@@ -0,0 +1,31 @@
+<script>
+    import Views from "./Views.svelte";
+    export let params;
+    params = {
+        title: 'Wochenansicht',
+        records: [],
+        isLoading: true
+    }
+    const View = {
+        'browse': () => {
+            fetch(env.API_URL + '/views/working-hours/weekly')
+                .then(res => {
+                    if (!res.ok) {
+                        throw new Error('Fail!');
+                    }
+                    return res.json();
+                })
+                .then(data => {
+                    params.records = data;
+                    params.isLoading = false;
+                })
+                .catch(err => {
+                    params.isLoading = false;
+                    console.log(err);
+                });
+        }
+    };
+    View.browse();
+</script>
+
+<Views {params} />
\ No newline at end of file
diff --git a/ui/src/routes/WorkingHours.svelte b/ui/src/routes/WorkingHours.svelte
index e2da199..aae1de7 100644
--- a/ui/src/routes/WorkingHours.svelte
+++ b/ui/src/routes/WorkingHours.svelte
@@ -3,10 +3,136 @@
     let title = "Bearbeitung Einträge"
     import IconifyIcon from '@iconify/svelte';
     import wrenchIcon from '@iconify-icons/oi/wrench';
-    import trashIcon from '@iconify-icons/oi/trash';
     import checkIcon from '@iconify-icons/oi/check';
     import xIcon from '@iconify-icons/oi/x';
+    import documentIcon from '@iconify-icons/oi/document';
     let activeRecord = null;
+    let newRecord = false;
+    params = {
+        title: 'Einträge',
+        records: [],
+        isLoading: true
+    }
+    const Records = {
+        'browse': () => {
+            // noinspection JSUnresolvedVariable
+            fetch(env.API_URL + '/working-hours')
+                .then(res => {
+                    if (!res.ok) {
+                        throw new Error('Fail!');
+                    }
+                    return res.json();
+                })
+                .then(data => {
+                    Controller.cancelActiveRecord();
+                    params.records = data;
+                    params.isLoading = false;
+                })
+                .catch(err => {
+                    params.isLoading = false;
+                    console.log(err);
+                });
+        },
+        'read': date => {
+            // noinspection JSUnresolvedVariable
+            fetch(env.API_URL + '/working-hours/' + date)
+                .then(res => {
+                    if (!res.ok) {
+                        throw new Error('Fail!');
+                    }
+                    return res.json();
+                })
+                .then(data => {
+                    activeRecord = data;
+                    if (date === null) {
+                        Controller.listRecords();
+                    }
+                })
+                .catch(err => {
+                    console.log(err);
+                });
+        },
+        'add': record => {
+            console.log(record);
+            // noinspection JSUnresolvedVariable
+            fetch(env.API_URL + '/working-hours', {
+                method: 'POST',
+                mode: 'no-cors',
+                cache: 'no-cache',
+                credentials: 'same-origin',
+                headers: {
+                    'Content-Type': 'application/json'
+                },
+                redirect: 'follow',
+                referrerPolicy: 'no-referrer',
+                body: JSON.stringify(record)
+            })
+                .then(res => {
+                    if (!res.ok) {
+                        throw new Error('Fail!');
+                    }
+                })
+                .then(() => {
+                    Controller.listRecords();
+                })
+                .catch(err => {
+                    console.log(err);
+                });
+        },
+        'update': (date, record) => {
+            console.log(record);
+            // noinspection JSUnresolvedVariable
+            fetch(env.API_URL + '/working-hours/' + date, {
+                method: 'PUT',
+                mode: 'no-cors',
+                cache: 'no-cache',
+                credentials: 'same-origin',
+                headers: {
+                    'Content-Type': 'application/json'
+                },
+                redirect: 'follow',
+                referrerPolicy: 'no-referrer',
+                body: JSON.stringify(record)
+            })
+                .then(res => {
+                    if (!res.ok) {
+                        throw new Error('Fail!');
+                    }
+                })
+                .then(() => {
+                    Controller.listRecords();
+                })
+                .catch(err => {
+                    console.log(err);
+                });
+        }
+    };
+    const Controller = {
+        'listRecords': () => {
+            Controller.cancelActiveRecord();
+            Records.browse();
+        },
+        'newRecord': () => {
+            activeRecord = {workingTime: '00:00:00'};
+            newRecord = true;
+        },
+        'saveRecord': () => {
+            if (newRecord === true) {
+                Records.add(activeRecord);
+            } else {
+                Records.update(activeRecord.workingDay, activeRecord);
+            }
+        },
+        'selectActiveRecord': record => Records.read(record.workingDay),
+        'cancelActiveRecord': () => {
+            activeRecord = null;
+            newRecord = false;
+        }
+    };
+    const initSite = () => {
+        Controller.listRecords()
+    };
+    initSite()
 </script>
 
 <svelte:head>
@@ -19,27 +145,40 @@
             <h1>{title}</h1>
         </header>
         <article>
-            <table>
-                <thead>
-                <tr>
-                    <th>Datum</th>
-                    <th>Arbeitsstunden</th>
-                    <th>Aktionen</th>
-                </tr>
-                </thead>
-                <tbody>
-                {#each params.records as record}
+            {#if params.isLoading === true}
+                <p>Loading...</p>
+            {:else}
+                <!--suppress HtmlUnknownTarget -->
+                <form action="/working-hours">
+                    <fieldset>
+                        <button on:click={Controller.newRecord}>Neuer Eintrag
+                            <IconifyIcon icon={documentIcon}/>
+                        </button>
+                    </fieldset>
+                </form>
+                <table>
+                    <thead>
                     <tr>
-                        <td>{record.workingDay}</td>
-                        <td>{record.workingTime}</td>
-                        <td>
-                            <button>Bearbeiten <IconifyIcon icon={wrenchIcon} /></button>
-                            <button>Löschen <IconifyIcon icon={trashIcon} color="red" /></button>
-                        </td>
+                        <th>Datum</th>
+                        <th>Arbeitsstunden</th>
+                        <th>Aktionen</th>
                     </tr>
-                {/each}
-                </tbody>
-            </table>
+                    </thead>
+                    <tbody>
+                    {#each params.records as record}
+                        <tr>
+                            <td>{record.workingDay}</td>
+                            <td>{record.workingTime}</td>
+                            <td>
+                                <button on:click={() => Controller.selectActiveRecord(record)}>Bearbeiten
+                                    <IconifyIcon icon={wrenchIcon}/>
+                                </button>
+                            </td>
+                        </tr>
+                    {/each}
+                    </tbody>
+                </table>
+            {/if}
         </article>
     </section>
 {:else}
@@ -53,18 +192,22 @@
                 <fieldset name="record-data">
                     <div>
                         <label for="workingDay">Arbeitstag</label>
-                        <!--suppress JSUnresolvedVariable -->
-                        <input bind:value={activeRecord.workingDay} placeholder="Arbeitstag" type="date" id="workingDay">
+                        <input bind:value={activeRecord.workingDay} type="date"
+                               id="workingDay" required pattern="\d{4}-\d{2}-\d{2}">
                     </div>
                     <div>
                         <label for="workingTime">Arbeitszeit</label>
-                        <!--suppress JSUnresolvedVariable -->
-                        <input bind:value={activeRecord.workingTime} placeholder="Arbeitszeit" type="time" id="workingTime">
+                        <input bind:value={activeRecord.workingTime} placeholder="Arbeitszeit" type="time"
+                               id="workingTime" required pattern="[0-5]\d:[0-5]\d:[0-5]\d">
                     </div>
                 </fieldset>
                 <fieldset name="buttons">
-                    <button>Übernehmen <IconifyIcon icon={checkIcon} color="green" /></button>
-                    <button>Abbrechen <IconifyIcon icon={xIcon} /></button>
+                    <button on:click={Controller.saveRecord}>Übernehmen
+                        <IconifyIcon icon={checkIcon} color="green"/>
+                    </button>
+                    <button on:click={Controller.cancelActiveRecord}>Abbrechen
+                        <IconifyIcon icon={xIcon}/>
+                    </button>
                 </fieldset>
             </form>
         </article>
diff --git a/ui/src/routes/YearlyViews.svelte b/ui/src/routes/YearlyViews.svelte
new file mode 100644
index 0000000..974b2b1
--- /dev/null
+++ b/ui/src/routes/YearlyViews.svelte
@@ -0,0 +1,31 @@
+<script>
+    import Views from "./Views.svelte";
+    export let params;
+    params = {
+        title: 'Jahresansicht',
+        records: [],
+        isLoading: true
+    }
+    const View = {
+        'browse': () => {
+            fetch(env.API_URL + '/views/working-hours/yearly')
+                .then(res => {
+                    if (!res.ok) {
+                        throw new Error('Fail!');
+                    }
+                    return res.json();
+                })
+                .then(data => {
+                    params.records = data;
+                    params.isLoading = false;
+                })
+                .catch(err => {
+                    params.isLoading = false;
+                    console.log(err);
+                });
+        }
+    };
+    View.browse();
+</script>
+
+<Views {params} />
\ No newline at end of file