shibeirencai_wechat/pages/topics/message/index.js

// pages/topics/common/message/index.js
import { config } from '../../../config.js'
import { store } from '../../../utils/store.js'
import { TopicModel } from '../../../models/topic.js'
let topicModel = new TopicModel()

Component({
  /**
   * 组件的属性列表
   */
  properties: {

  },

  /**
   * 组件的初始数据 
   */
  data: {
    messageTitle:"",
    messageDetail:"",
    files: [],
  },
  // lifetimes: {
  //   attached: function () {
  //     // 在组件实例进入页面节点树时执行
  //   },
  //   detached: function () {
  //     // 在组件实例被从页面节点树移除时执行
  //   }
  // },
  // attached: function () {
  //   console.log('啦啦啦')
  // },

  /**
   * 组件的方法列表
   */
  attached: function () {
    console.log('啦啦啦')
    this.setData({
      uplaodFile: this.uplaodFile.bind(this)
    })


    
  },
  methods: {
    bindTextInput(e) {
      this.setData({
        messageTitle: e.detail.value
      })
    },
    bindTextAreaInput(e) {
      this.setData({
        messageDetail: e.detail.value
      })
    },

    uplaodFile(files) {
      console.log('upload files', files)
      // 文件上传的函数，返回一个promise
      const token = store.readToken()
      console.log(token)
      return new Promise((resolve, reject) => {
        files.tempFilePaths.forEach(item => {
          wx.uploadFile({
            url: config.api_url + "/api/common/upload",
            filePath: item,
            header: {
              'token': token,
              'content-type': 'application/json',
            },
            name: 'files',
            success: (res) => {
              console.log(res);
              const data = JSON.parse(res.data)
              const image = {
                url: config.api_url + '/' + data.result.imgUrl,
              }
              this.setData({
                files: [...this.data.files, image]
              })
              resolve(this.data.files)
            }
          })
        })
      })
    },
    deleteFile(e) {
      console.log(e)
      let tempImages = this.data.files
      const index = e.detail.index

      tempImages.splice(index, 1);
      this.setData({
        files: tempImages
      })
    },

    submit() {
      if (this.data.messageTitle === '') {
        wx.showModal({
          title: '提示',
          content: '请输入标题',
          showCancel: false
        })
        return
      }
      if (this.data.messageDetail === ''){
        wx.showModal({
          title: '提示',
          content: '请输入正文内容',
          showCancel:false
        })
        return
      }

      topicModel.addMessage(this.data.messageTitle, this.data.messageDetail,this.data.files,res=>{
        if(res.code === 200){
          this.setData({
            messageTitle:'',
            messageDetail: '',
            files:[],
          },()=>{
            wx.showToast({
              title: res.message,
              icon: 'none'
            })
          })
        }
      })
    }
  }
})