今天實現建立部落格日誌的功能 首先在handlers檔案中增加後端功能函式，之後設定前端頁面。 程式碼之後會在github上附上。

handlers

# 驗證許可權是否正確
def check_admin(request):
    if request.__user__ is None or not request.__user__.admin:
        raise APIPermissionError()
# 編寫部落格建立的api後端函式
@post('/api/blogs')
async def api_create_blog(request, *, name, summary, content):
    check_admin(request)
    if not name or not name.strip():
        raise APIValueError('name', 'name cannot be empty.')
    if not summary or not summary.strip():
        raise APIValueError('summary', 'summary cannot be empty.')
    if not content or not content.strip():
        raise APIValueError('content', 'content cannot be empty.')
    blog = Blog(user_id=request.__user__.id, user_name=request.__user__.name, user_image=request.__user__.image, name=name.strip(), summary=summary.strip(), content=content.strip())
    await blog.save()
    return blog
# 編寫mvc將頁面顯示出來
@get('/manage/blogs/create')
async def manage_create_blog(request):
    return {
        '__template__': 'manage_blog_edit.html',
        'id': '',
        'action': '/api/blogs',
        '__user__': request.__user__	
}
 

html

{% extends '__base__.html' %}

{% block title %}編輯日誌{% endblock %}

{% block beforehead %}

<script>
var
    ID = '{{ id }}',
    action = '{{ action }}';
function initVM(blog) {
    <!-- 我們選擇Vue這個簡單易用的MVVM框架來實現建立Blog的頁面,以便將model與view進行分離 -->
         el：根據選擇器查詢繫結的View，這裡是#vm，就是id為vm的DOM，對應的是一個<div>標籤；
         data：JavaScript物件表示的Model，我們初始化為{ name: '', summary: '', content: ''}；
         methods：View可以觸發的JavaScript函式，submit就是提交表單時觸發的函式。
         -->
    var vm = new Vue({
        el: '#vm',
        data: blog,
        methods: {
            submit: function (event) {
                event.preventDefault();
                var $form = $('#vm').find('form');
                $form.postJSON(action, this.$data, function (err, r) {
                    if (err) {
                        $form.showFormError(err);
                    }
                    else {
                        return location.assign('/manage/blogs');
                    }
                });
            }
        }
    });
    $('#vm').show();
}
$(function () {
    if (ID) {
        getJSON('/api/blogs/', function (err, blog) {
            if (err) {
                return fatal(err);
            }
            $('#loading').hide();
            initVM(blog);
        });
    }
    else {
        $('#loading').hide();
        initVM({
            name: '',
            summary: '',
            content: ''
        });
    }
});
</script>

{% endblock %}

{% block content %}

    <div class="uk-width-1-1 uk-margin-bottom">
        <div class="uk-panel uk-panel-box">
            <ul class="uk-breadcrumb">
                <li><a href="/manage/comments">評論</a></li>
                <li><a href="/manage/blogs">日誌</a></li>
                <li><a href="/manage/users">使用者</a></li>
            </ul>
        </div>
    </div>

    <div id="error" class="uk-width-1-1">
    </div>

    <div id="loading" class="uk-width-1-1 uk-text-center">
        <span><i class="uk-icon-spinner uk-icon-medium uk-icon-spin"></i> 正在載入...</span>
    </div>

    <div id="vm" class="uk-width-2-3">
        <!-- Form表單通過<form v-on="submit: submit">把提交表單的事件關聯到submit方法。-->
        <form v-on="submit: submit" class="uk-form uk-form-stacked">
            <div class="uk-alert uk-alert-danger uk-hidden"></div>
            <div class="uk-form-row">
                <label class="uk-form-label">標題:</label>
                <div class="uk-form-controls">
                    <!-- 我們在<form>標籤中，用幾個簡單的v-model，就可以讓Vue把Model和View關聯起來 -->
                    <input v-model="name" name="name" type="text" placeholder="標題" class="uk-width-1-1">
                </div>
            </div>
            <div class="uk-form-row">
                <label class="uk-form-label">摘要:</label>
                <div class="uk-form-controls">
                    <textarea v-model="summary" rows="4" name="summary" placeholder="摘要" class="uk-width-1-1" style="resize:none;"></textarea>
                </div>
            </div>
            <div class="uk-form-row">
                <label class="uk-form-label">內容:</label>
                <div class="uk-form-controls">
                    <textarea v-model="content" rows="16" name="content" placeholder="內容" class="uk-width-1-1" style="resize:none;"></textarea>
                </div>
            </div>
            <div class="uk-form-row">
                <button type="submit" class="uk-button uk-button-primary"><i class="uk-icon-save"></i> 儲存</button>
                <a href="/manage/blogs" class="uk-button"><i class="uk-icon-times"></i> 取消</a>
            </div>
        </form>
    </div>

{% endblock %}
 

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