Cascader 级联选择

<template>
  <a-cascader :options="options" @change="onChange" placeholder="Please select" />
</template>
<script>
export default {
  data() {
    return {
      options: [{
        value: 'zhejiang',
        label: 'Zhejiang',
        children: [{
          value: 'hangzhou',
          label: 'Hangzhou',
          children: [{
            value: 'xihu',
            label: 'West Lake',
          }],
        }],
      }, {
        value: 'jiangsu',
        label: 'Jiangsu',
        children: [{
          value: 'nanjing',
          label: 'Nanjing',
          children: [{
            value: 'zhonghuamen',
            label: 'Zhong Hua Men',
          }],
        }],
      }]
    }
  },
  methods: {
    onChange(value) {
      console.log(value);
    }
  }
}
</script>

<template>
  <a-cascader :options="options" @change="onChange" changeOnSelect />
</template>
<script>
export default {
  data() {
    return {
      options: [{
        value: 'zhejiang',
        label: 'Zhejiang',
        children: [{
          value: 'hangzhou',
          label: 'Hangzhou',
          children: [{
            value: 'xihu',
            label: 'West Lake',
          }],
        }],
      }, {
        value: 'jiangsu',
        label: 'Jiangsu',
        children: [{
          value: 'nanjing',
          label: 'Nanjing',
          children: [{
            value: 'zhonghuamen',
            label: 'Zhong Hua Men',
          }],
        }],
      }]
    }
  },
  methods: {
    onChange(value) {
      console.log(value);
    }
  }
}
</script>

<template>
  <a-cascader :options="options" :defaultValue="['zhejiang', 'hangzhou', 'xihu']" style="width: 100%">
    <template slot="displayRender" slot-scope="{labels, selectedOptions}">
      <span v-for="(label, index) in labels" :key="selectedOptions[index].value">
        <span v-if="index === labels.length - 1">
        {{label}} (<a @click="e => handleAreaClick(e, label, selectedOptions[index])">{{selectedOptions[index].code}}</a>)
        </span>
        <span v-else @click="onChange">
          {{label}} / 
        </span>
      </span>
    </template>
  </a-cascader>
</template>
<script>
export default {
  data() {
    return {
      options: [{
        value: 'zhejiang',
        label: 'Zhejiang',
        children: [{
          value: 'hangzhou',
          label: 'Hangzhou',
          children: [{
            value: 'xihu',
            label: 'West Lake',
            code: 752100,
          }],
        }],
      }, {
        value: 'jiangsu',
        label: 'Jiangsu',
        children: [{
          value: 'nanjing',
          label: 'Nanjing',
          children: [{
            value: 'zhonghuamen',
            label: 'Zhong Hua Men',
            code: 453400,
          }],
        }],
      }]
    }
  },
  methods: {
    onChange(value) {
      console.log(value);
    },
    handleAreaClick(e, label, option) {
      e.stopPropagation();
      console.log('clicked', label, option);
    },
  }
}
</script>

<template>
  <span>
    {{text}}
    &nbsp;
    <a-cascader :options="options" @change="onChange">
      <a href="#">Change city</a>
    </a-cascader>
  </span>
</template>
<script>
export default {
  data() {
    return {
      text: 'Unselect',
      options: [{
        value: 'zhejiang',
        label: 'Zhejiang',
        children: [{
          value: 'hangzhou',
          label: 'Hangzhou',
          children: [{
            value: 'xihu',
            label: 'West Lake',
          }],
        }],
      }, {
        value: 'jiangsu',
        label: 'Jiangsu',
        children: [{
          value: 'nanjing',
          label: 'Nanjing',
          children: [{
            value: 'zhonghuamen',
            label: 'Zhong Hua Men',
          }],
        }],
      }]
    }
  },
  methods: {

    onChange(value, selectedOptions) {
      this.text = selectedOptions.map(o => o.label).join(', ');
    }
  }
}
</script>

<template>
  <a-cascader :options="options" @change="onChange" :defaultValue="['zhejiang', 'hangzhou', 'xihu']" />
</template>
<script>
export default {
  data() {
    return {
      options: [{
        value: 'zhejiang',
        label: 'Zhejiang',
        children: [{
          value: 'hangzhou',
          label: 'Hangzhou',
          children: [{
            value: 'xihu',
            label: 'West Lake',
          }],
        }],
      }, {
        value: 'jiangsu',
        label: 'Jiangsu',
        children: [{
          value: 'nanjing',
          label: 'Nanjing',
          children: [{
            value: 'zhonghuamen',
            label: 'Zhong Hua Men',
          }],
        }],
      }]
    }
  },
  methods: {
    onChange(value) {
      console.log(value);
    }
  }
}
</script>

<template>
  <a-cascader :options="options" @change="onChange"/>
</template>
<script>
export default {
  data() {
    return {
      options: [{
        value: 'zhejiang',
        label: 'Zhejiang',
        children: [{
          value: 'hangzhou',
          label: 'Hangzhou',
          children: [{
            value: 'xihu',
            label: 'West Lake',
          }],
        }],
      }, {
        value: 'jiangsu',
        label: 'Jiangsu',
        disabled: true,
        children: [{
          value: 'nanjing',
          label: 'Nanjing',
          children: [{
            value: 'zhonghuamen',
            label: 'Zhong Hua Men',
          }],
        }],
      }]
    }
  },
  methods: {
    onChange(value) {
      console.log(value);
    }
  }
}
</script>

<template>
  <a-cascader :options="options" :displayRender="displayRender" expandTrigger="hover" @change="onChange" placeholder="Please select" />
</template>
<script>
export default {
  data() {
    return {
      options: [{
        value: 'zhejiang',
        label: 'Zhejiang',
        children: [{
          value: 'hangzhou',
          label: 'Hangzhou',
          children: [{
            value: 'xihu',
            label: 'West Lake',
          }],
        }],
      }, {
        value: 'jiangsu',
        label: 'Jiangsu',
        children: [{
          value: 'nanjing',
          label: 'Nanjing',
          children: [{
            value: 'zhonghuamen',
            label: 'Zhong Hua Men',
          }],
        }],
      }]
    }
  },
  methods: {
    onChange(value) {
      console.log(value);
    },
    displayRender({ labels }) {
      return labels[labels.length - 1];
    }
  }
}
</script>

<template>
  <a-cascader :options="options" @change="onChange" :loadData="loadData" placeholder="Please select" changeOnSelect/>
</template>
<script>
export default {
  data() {
    return {
      options: [{
        value: 'zhejiang',
        label: 'Zhejiang',
        isLeaf: false,
      }, {
        value: 'jiangsu',
        label: 'Jiangsu',
        isLeaf: false,
      }]
    }
  },
  methods: {
    onChange(value) {
      console.log(value);
    },
    loadData(selectedOptions) {
      const targetOption = selectedOptions[selectedOptions.length - 1];
      targetOption.loading = true;

      // load options lazily
      setTimeout(() => {
        targetOption.loading = false;
        targetOption.children = [{
          label: `${targetOption.label} Dynamic 1`,
          value: 'dynamic1',
        }, {
          label: `${targetOption.label} Dynamic 2`,
          value: 'dynamic2',
        }];
        this.options = [...this.options]
      }, 1000);
    }
  }
}
</script>

<template>
  <a-cascader :options="options" :showSearch="{filter}" @change="onChange" placeholder="Please select" />
</template>
<script>
export default {
  data() {
    return {
      options: [{
        value: 'zhejiang',
        label: 'Zhejiang',
        children: [{
          value: 'hangzhou',
          label: 'Hangzhou',
          children: [{
            value: 'xihu',
            label: 'West Lake',
          }, {
            value: 'xiasha',
            label: 'Xia Sha',
            disabled: true,
          }],
        }],
      }, {
        value: 'jiangsu',
        label: 'Jiangsu',
        children: [{
          value: 'nanjing',
          label: 'Nanjing',
          children: [{
            value: 'zhonghuamen',
            label: 'Zhong Hua men',
          }],
        }],
      }]
    }
  },
  methods: {
    onChange(value, selectedOptions) {
      console.log(value, selectedOptions);
    },
    filter(inputValue, path) {
      return (path.some(option => (option.label).toLowerCase().indexOf(inputValue.toLowerCase()) > -1));
    },
  }
}
</script>

<template>
  <div>
    <a-cascader size="large" :options="options" @change="onChange" /><br /><br />
    <a-cascader :options="options" @change="onChange" /><br /><br />
    <a-cascader size="small" :options="options" @change="onChange" /><br /><br />
  </div>
</template>
<script>
export default {
  data() {
    return {
      options: [{
        value: 'zhejiang',
        label: 'Zhejiang',
        children: [{
          value: 'hangzhou',
          label: 'Hangzhou',
          children: [{
            value: 'xihu',
            label: 'West Lake',
          }],
        }],
      }, {
        value: 'jiangsu',
        label: 'Jiangsu',
        children: [{
          value: 'nanjing',
          label: 'Nanjing',
          children: [{
            value: 'zhonghuamen',
            label: 'Zhong Hua Men',
          }],
        }],
      }]
    }
  },
  methods: {
    onChange(value) {
      console.log(value);
    }
  }
}
</script>

<template>
  <a-cascader :fieldNames="{ label: 'name', value: 'code', children: 'items' }" :options="options" @change="onChange" placeholder="Please select" />
</template>
<script>
const options = [{
  code: 'zhejiang',
  name: 'Zhejiang',
  items: [{
    code: 'hangzhou',
    name: 'Hangzhou',
    items: [{
      code: 'xihu',
      name: 'West Lake',
    }],
  }],
}, {
  code: 'jiangsu',
  name: 'Jiangsu',
  items: [{
    code: 'nanjing',
    name: 'Nanjing',
    items: [{
      code: 'zhonghuamen',
      name: 'Zhong Hua Men',
    }],
  }],
}]
export default {
  data() {
    return {
      options,
    }
  },
  methods: {
    onChange(value) {
      console.log(value);
    }
  }
}
</script>

<template>
  <div>
    <a-cascader style="margin-top: 1rem" :options="options" @change="onChange" placeholder="Please select">
      <a-icon type="smile" slot="suffixIcon" class="test"/>
    </a-cascader>
    <a-cascader suffixIcon="ab" style="margin-top: 1rem" :options="options" @change="onChange" placeholder="Please select" />
  </div>
</template>
<script>
export default {
  data() {
    return {
      options: [{
        value: 'zhejiang',
        label: 'Zhejiang',
        children: [{
          value: 'hangzhou',
          label: 'Hangzhou',
          children: [{
            value: 'xihu',
            label: 'West Lake',
          }],
        }],
      }, {
        value: 'jiangsu',
        label: 'Jiangsu',
        children: [{
          value: 'nanjing',
          label: 'Nanjing',
          children: [{
            value: 'zhonghuamen',
            label: 'Zhong Hua Men',
          }],
        }],
      }]
    }
  },
  methods: {
    onChange(value) {
      console.log(value);
    }
  }
}
</script>