iview 使用笔记

<style lang="sass" scoped>
    /*
        添加 scoped 后样式将被锁定在当前组件，因此无法覆盖原iview样式,
        解决方式：
            1/不使用 scoped（不推荐），
            2/再建一个 style 标签 ，vue单文件组件中是允许定义多个style标签的
    */
<style>
/*如下*/
<style lang="sass" scoped>

</style>
<style lang="sass">

</style>        

<template>
    <Upload
        ref="upload"
        :action="uploadUrl",
        :format="[‘jpg‘,‘jpeg‘,‘png‘,‘bmp‘,‘pdf‘]",
        :on-format-error = "handleFormatError",
        :before-upload = "handleBeforeUpload",
        :on-success = "handleSuccess",
        :on-error="handleError",
        :data="uploadData"
        >
        <div style="width: 58px;height:58px;line-height: 58px;">
            <Icon type="camera" size="20"></Icon>
        </div>
    </Upload>
</template>
<script>
    export default {
        data () {
            return {
                uploadModal: true,
                uploadData: {},
                activeUploadId: "5c2bf345-b973-4ffd-a52e-87bb9c1d2b72",
                uploadUrl: ‘‘,
            }
        },
        methods: {
            ... ...
            handleBeforeUpload (file) { /*上传前确定上传地址*/
                let researchId = this.activeUploadId;
                this.uploadUrl = ‘api?research_id=‘ + researchId + ‘&filetype=‘ + file.name.split(‘.‘)[1];
                this.uploadData = {
                    aspect: patient,
                    abc: file
                };
                let promise = new Promise((resolve) => {
                    this.$nextTick(function () {
                        resolve(true);
                    });
                });
                return promise; //通过返回一个promis对象解决
            }
            ... ...
        }
    }
</script>