Element: [bug report] cascader style still shows the last bound value status

[xLong1029]

Element UI version

2.13.0

OS/Browsers version

windows/Google Chrome79.0.3945.88

Vue version

2.6.10

Reproduction Link

https://codepen.io/xlong1029/pen/jOExNMv

Steps to reproduce

Cascader第二次绑定值时，下拉框里选项高亮样式仍显示上一次绑定值时的状态

What is Expected?

应根据当前传入的值来显示对应高亮样式

What is actually happening?

Cascader第二次传入值时，下拉框里选项高亮样式仍显示上一次传入值时的状态

[element-bot]

Translation of this issue:

Element UI version

2.13.0

OS/Browsers version

windows/Google Chrome79.0.3945.88

Vue version

2.6.10

Reproduction Link

https://codepen.io/xlong1029/pen/jOExNMv

Steps to reproduce

When the cascader binds the value for the second time, the highlighted style still displays the status of the last bound value

What is Expected?

The corresponding highlight style should be displayed based on the current incoming value

What is actually happening?

When cascader passes in the value for the second time, the highlighted style still shows the status of the last time it passed in the value

[sweetOranges]

i found a same question, i view the source code, find that these code can fix this problem
open the file packages/cascader-panel/src/cascader-panel.vue, view the line at 377

clearCheckedNodes() {
      const { config, leafOnly } = this;
      const { multiple, emitPath } = config;
      if (multiple) {
        this.getCheckedNodes(leafOnly)
          .filter(node => !node.isDisabled)
          .forEach(node => node.doCheck(false));
        this.calculateMultiCheckedValue();
      } else {
        this.checkedValue = emitPath ? [] : null;
        this.activePath = []; // add this line
        this.calculateCheckedNodePaths(); // add this line
        this.syncActivePath(); // add this line
      }
    }

open the file packages/cascader-panel/src/cascader-panel.vue, view the line at 147

value() {
      this.clearCheckedNodes(); // add this line
      this.syncCheckedValue(); 
      this.checkStrictly && this.calculateCheckedNodePaths();
},

this problem spend my one day to fix the online project, i hope that can help you.

[xLong1029]

i found a same question, i view the source code, find that these code can fix this problem
open the file packages/cascader-panel/src/cascader-panel.vue, view the line at 377

clearCheckedNodes() {
      const { config, leafOnly } = this;
      const { multiple, emitPath } = config;
      if (multiple) {
        this.getCheckedNodes(leafOnly)
          .filter(node => !node.isDisabled)
          .forEach(node => node.doCheck(false));
        this.calculateMultiCheckedValue();
      } else {
        this.checkedValue = emitPath ? [] : null;
        this.activePath = []; // add this line
        this.calculateCheckedNodePaths(); // add this line
        this.syncActivePath(); // add this line
      }
    }

open the file packages/cascader-panel/src/cascader-panel.vue, view the line at 147

value() {
      this.clearCheckedNodes(); // add this line
      this.syncCheckedValue(); 
      this.checkStrictly && this.calculateCheckedNodePaths();
},

this problem spend my one day to fix the online project, i hope that can help you.

thanks a lot

[ishowman]

omg, still not fixed

[lonquan]

Give it a try:

<el-cascader ref="select" />

this.$refs['select'].focusFirstNode()

[rench]

Try this at home!

<el-cascader ref="cascaderSelector" v-model="classId" :options="classesOptions" :props="classIdListProps"
  :style="{width: '100%'}" placeholder="select class" filterable clearable @change="handClassIdChange"></el-cascader>

resetCasadeSelector() {
    if (this.$refs.cascaderSelector) {
        this.$refs.cascaderSelector.$refs.panel.activePath = []
        this.$refs.cascaderSelector.$refs.panel.calculateCheckedNodePaths()
    }
}

[angelaranvs]

Try this:
<el-cascader v-if="isShowCascader"/>
this.isShowCascader = false
this.$nextTick(() => { this.isShowCascader = true })

[kyleqqq]

Try this:
<el-cascader v-if="isShowCascader"/>
this.isShowCascader = false
this.$nextTick(() => { this.isShowCascader = true })

this works~

[zrqabc]

Try this:
<el-cascader ref="cascader"/>
this.$refs.cascader.$refs.panel.checkedValue = [];//也可以是指定的值
this.$refs.cascader.$refs.panel.activePath = [];
this.$refs.cascader.$refs.panel.syncActivePath();

[zyr799]

试试这个：
<el-cascader v-if="isShowCascader"/>
this.isShowCascader = false
this.$nextTick(() => { this.isShowCascader = true })

这个可行〜

但是在选择完一个以后，再次展开，页面会出现两个下拉框，请问您有出现这个问题吗？有什么解决方案吗？