21-----BBS论坛 - 润新知

21.1.编辑轮播图功能完成

（1）cms_banners.html

把属性绑定到<tr>上面，方便找到各属性的值

   <tbody>
        {% for banner in banners %}
            <tr data-name="{{ banner.name }}" data-id="{{ banner.id }}" data-img="{{ banner.img_url }}"
                data-link="{{ banner.link_url }}" data-priority="{{ banner.priority }}">

                <td>{{ banner.name }}</td>
                <td><a href="{{ banner.img_url }}" target="_blank">{{ banner.img_url }}</a></td>
                <td><a href="{{ banner.link_url }}" target="_blank">{{ banner.link_url }}</a></td>
                <td>{{ banner.priority }}</td>
                <td>{{ banner.create_time }}</td>
                <td>
                    <button class="btn btn-default btn-xs edit-banner-btn">编辑</button>
                    <button class="btn btn-danger btn-xs delete-banner-btn">删除</button>
                </td>
            </tr>
        {% endfor %}
        </tbody>

（2）banner.js

$(function () {
    $('#save_banner_btn').click(function (event) {
        event.preventDefault();
        var self = $(this);
        var dialog = $('#modal-dialog');
        var nameInput = $("input[name='name']");
        var imgInput = $("input[name='img_url']");
        var linkInput = $("input[name='link_url']");
        var priorityInput = $("input[name='priority']");

        var name = nameInput.val();
        var img_url = imgInput.val();
        var link_url = linkInput.val();
        var priority = priorityInput.val();
        var submitType = self.attr('data-type');
        var bannerId = self.attr('data-id');


        if (!name || !img_url || !link_url || !priority) {
            zlalert.alertInfo('请输入所有数据');
            return;
        }

        var url = '';
        if (submitType == 'update') {
            url = '/cms/ubanner/';
        } else {
            url = '/cms/abanner/'
        }
        zlajax.post({
            'url': url,
            'data': {
                'name': name,
                'img_url': img_url,
                'link_url': link_url,
                'priority': priority,
                'banner_id': bannerId
            },
            'success': function (data) {
                if (data['code'] == 200) {
                    dialog.modal('hide');
                    window.location.reload()
                } else {
                    zlalert.alertInfo(data['message']);
                }
            },
            'fail': function (error) {
                zlalert.alertNetworkError()
            }
        });
    });

});

$(function () {
    $('.edit-banner-btn').on('click', function (event) {
        var $this = $(this);
        var dialog = $('#banner-dialog');
        dialog.modal('show');

        var tr = $this.parent().parent();
        var name = tr.attr('data-name');
        var img = tr.attr('data-img');
        var link = tr.attr('data-link');
        var priority = tr.attr('data-priority');
        var nameInput = dialog.find('input[name=name]');
        var imgInput = dialog.find('input[name=img_url]');
        var linkInput = dialog.find('input[name=link_url]');
        var priorityInput = dialog.find('input[name=priority]');
        var saveBtn = dialog.find('#save_banner_btn');

        nameInput.val(name);
        imgInput.val(img);
        linkInput.val(link);
        priorityInput.val(priority);
        saveBtn.attr('data-type', 'update');
        saveBtn.attr('data-id', tr.attr('data-id'));

    });
});

（3）cms/forms.py

class AddBannerForm(BaseForm):
    name=StringField(validators=[InputRequired(message='请输入轮播图名称')])
    img_url=StringField(validators=[InputRequired(message='请输入轮播图链接')])
    link_url=StringField(validators=[InputRequired(message='请输入轮播图跳转链接')])
    priority=IntegerField(validators=[InputRequired(message='请输入轮播图优先级')])

（4）cms/views.py

@bp.route('/ubanner/',methods=['POST'])
def ubanner():
    form=UpdateBannerForm(request.form)
    if form.validate():
        banner_id=form.banner_id.data
        name=form.name.data
        img_url=form.img_url.data
        link_url=form.link_url.data
        priority=form.priority.data
        banner=BannerModel.query.get(banner_id)
        if banner:
            banner.name=name
            banner.img_url=img_url
            banner.link_url=link_url
            banner.priority=priority
            db.session.commit()
            return restful.success()
        else:
            return restful.params_error(message='没有这个轮播图')
    else:
        return restful.params_error(message=form.get_error())

21.2.删除轮播图功能完成

（1）cms/forms.py

class UpdateBannerForm(AddBannerForm):
    banner_id=IntegerField(validators=[InputRequired(message='请输入轮播图ID')])

（2）banner.js

$(function () {
    $('.delete-banner-btn').on('click', function () {
        var banner_id = $(this).parent().parent().attr('data-id');
        zlalert.alertConfirm({
            'msg': '确定要删除这张图片吗?',
            'confirmCallback': function () {
                zlajax.post({
                    'url': '/cms/dbanner/',
                    'data': {
                        'banner_id': banner_id
                    },
                    'success': function (data) {
                        if (data['code'] == 200) {
                            window.location.reload();
                        } else {
                            zlalert.alertInfo(data['message'])
                        }
                    }

                })
            }
        });
    });
});