vue-admin-template 学习笔记登录实现

文件分析

src/views/login/index.vue
<template>
  <div class="login-container">
    <!--
     1. ref="loginForm"          传递该参数
     2. :model="loginForm" 		 表单数据对象
     3. :rules="loginRules"		 表单验证规则
     4. class="login-form"   	 css样式
     5. auto-complete="on" 		 自动提交 一般都是默认的
     6. label-position="left"    表单域标签的位置，如果值为 left 或者 right 时，则需要设置 label-width
    -->
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <div class="title-container">
        <h3 class="title">系统登录</h3>
      </div>
      <!--
      1. prop=“username” 表单域 model 字段，在使用 validate、resetFields 方法的情况下，该属性是必填的，传入 Form 组件的 model 中的字段
      2. ref="username"  传递该参数
      3. v-model="loginForm.username"      绑定值
      4. placeholder="Username"            占位符
      5. name="username"                   原生属性
      6. type="text"                       类型
      7. tabindex="1"                      标签索引
      8. auto-complete="on"                自动提交
      -->
      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="loginForm.username"
          placeholder="Username"
          name="username"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="Password"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <el-button
        :loading="loading"
        type="primary"
        style="width:100%;margin-bottom:30px;"
        @click.native.prevent="handleLogin"
      >登录
      </el-button>

      <!--      <div class="tips">-->
      <!--        <span style="margin-right:20px;">username: admin</span>-->
      <!--        <span> password: any</span>-->
      <!--      </div>-->

    </el-form>
  </div>
</template>

<script>

  import { validUsername } from '@/utils/validate';

  export default {
    name: 'Login',
    data() {
      const validateUsername = (rule, value, callback) => {
        if (!validUsername(value)) {
          callback(new Error('请输入正确的用户名'));
        } else {
          callback();
        }
      };
      const validatePassword = (rule, value, callback) => {
        if (value.length < 6) {
          callback(new Error('密码不能少于6位数字'));
        } else {
          callback();
        }
      };
      return {
        loginForm: {
          username: 'admin',
          password: '111111'
        },
        loginRules: {
          username: [{ required: true, trigger: 'blur', validator: validateUsername }],
          password: [{ required: true, trigger: 'blur', validator: validatePassword }]
        },
        loading: false,
        passwordType: 'password',
        redirect: undefined
      };
    },
    watch: {
      $route: {
        handler: function(route) {
          this.redirect = route.query && route.query.redirect;
        },
        immediate: true
      }
    },
    methods: {
      // 显示密码
      showPwd() {
        if (this.passwordType === 'password') {
          this.passwordType = '';
        } else {
          this.passwordType = 'password';
        }
        this.$nextTick(() => {
          this.$refs.password.focus();
        });
      },
      // 处理登录
      handleLogin() {
        this.$refs.loginForm.validate(valid => {
          if (valid) {
            this.loading = true;
            // 请求 store 中的方法
            this.$store.dispatch('user/login', this.loginForm).then(() => {
              this.$router.push({ path: this.redirect || '/' });
              this.loading = false;
            }).catch(() => {
              this.loading = false;
            });
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      }
    }
  };
</script>

<style lang="scss">
  /* 修复input 背景不协调 和光标变色 */
  /* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

  $bg: #283443;
  $light_gray: #fff;
  $cursor: #fff;

  @supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
    .login-container .el-input input {
      color: $cursor;
    }
  }

  /* reset element-ui css */
  .login-container {
    .el-input {
      display: inline-block;
      height: 47px;
      width: 85%;

      input {
        background: transparent;
        border: 0;
        -webkit-appearance: none;
        border-radius: 0;
        padding: 12px 5px 12px 15px;
        color: $light_gray;
        height: 47px;
        caret-color: $cursor;

        &:-webkit-autofill {
          box-shadow: 0 0 0 1000px $bg inset !important;
          -webkit-text-fill-color: $cursor !important;
        }
      }
    }

    .el-form-item {
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(0, 0, 0, 0.1);
      border-radius: 5px;
      color: #454545;
    }
  }
</style>

<style lang="scss" scoped>
  $bg: #2d3a4b;
  $dark_gray: #889aa4;
  $light_gray: #eeeeee;

  .login-container {
    min-height: 100%;
    width: 100%;
    background-color: $bg;
    overflow: hidden;

    .login-form {
      position: relative;
      width: 520px;
      max-width: 100%;
      padding: 160px 35px 0;
      margin: 0 auto;
      overflow: hidden;
    }

    .tips {
      font-size: 14px;
      color: #fff;
      margin-bottom: 10px;

      span {
        &:first-of-type {
          margin-right: 16px;
        }
      }
    }

    .svg-container {
      padding: 6px 5px 6px 15px;
      color: $dark_gray;
      vertical-align: middle;
      width: 30px;
      display: inline-block;
    }

    .title-container {
      position: relative;

      .title {
        font-size: 26px;
        color: $light_gray;
        margin: 0 auto 40px auto;
        text-align: center;
        font-weight: bold;
      }
    }

    .show-pwd {
      position: absolute;
      right: 10px;
      top: 7px;
      font-size: 16px;
      color: $dark_gray;
      cursor: pointer;
      user-select: none;
    }
  }
</style>