第177天学习打卡（项目 谷粒商城19 基本效果修改 拖拽效果 ）
Posted doudoutj
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了第177天学习打卡（项目 谷粒商城19 基本效果修改 拖拽效果 ）相关的知识，希望对你有一定的参考价值。
三级分类 基本效果修改
计量单位 和图标显示
category.vue
<template>
<div>
<el-tree
:data="menus"
:props="defaultProps"
:expand-on-click-node="false"
show-checkbox
node-key="catId"
:default-expanded-keys="expandedKey"
>
<span class="custom-tree-node" slot-scope="{ node, data }">
<span>{{ node.label }}</span>
<span>
<el-button
v-if="node.level <= 2"
type="text"
size="mini"
@click="() => append(data)"
>
Append
</el-button>
<el-button
type="text"
size="mini"
@click="edit(data)"
>
edit
</el-button>
<el-button
v-if="node.childNodes.length == 0"
type="text"
size="mini"
@click="() => remove(node, data)"
>
Delete
</el-button>
</span>
</span>
</el-tree>
<el-dialog :title="title" :visible.sync="dialogVisible" width="30%">
<el-form :model="category">
<el-form-item label="分类名称">
<el-input v-model="category.name" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="图标">
<el-input v-model="category.icon" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="计量单位">
<el-input v-model="category.productUnit" autocomplete="off"></el-input>
</el-form-item>
</el-form>
<span slot="footer" class="dialog-footer">
<el-button @click="dialogVisible = false">取 消</el-button>
<el-button type="primary" @click="submitData"
>确 定</el-button
>
</span>
</el-dialog>
</div>
</template>
<script>
//这里可以导入其他文件（比如：组件，工具js，第三方插件js，json文件，图片文件等等）
//例如：import 《组件名称》 from '《组件路径》';
export default {
//import引入的组件需要注入到对象中才能使用
components: {},
props: {},
data() {
return {
title: "",
dialogType: "", // edit add
category: {name:"", parentCid: 0, catLevel: 0, showStatus: 1, sort: 0, productUnit: "", icon: "", catId: null},
dialogVisible: false,
menus: [],
expandedKey: [],
defaultProps: {
children: "children",
label: "name",
},
};
},
//监听属性 类似于data概念
computed: {},
//监控data中的数据变化
watch: {},
//方法集合
methods: {
append(data) {
console.log("append", data);
this.dialogType = "add";
this.title = "添加分类";
this.dialogVisible = true;
this.category.parentCid = data.catId;
this.category.catLevel = data.catLevel*1 + 1;
},
edit(data){
console.log("要修改的数据", data);
this.dialogType = "edit";
this.title = "修改分类";
this.dialogVisible = true;
this.category.name = data.name;
this.category.catId = data.catId;
},
submitData(){
if(this.dialogType == "add"){
this.addCategory();
}
if(this.dialogType == "edit"){
this.editCategory();
}
},
//修改三级分类数据
editCategory(){
},
//添加三级分类的方法
addCategory(){
console.log("提交的三级分类数据", this.category);
this.$http({
url: this.$http. adornUrl('/product/category/save'),
method: 'post',
data: this.$http.adornData(this.category, false)
}).then(({ data })=>{
this.$message({
message: "菜单保存成功",
type: "success",
});
//关闭对话框
this.dialogVisible = false;
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [this.category.parentCid];
});
},
remove(node, data) {
var ids = [data.catId];
this.$confirm(`是否删除【${data.name}】菜单?`, "提示", {
confirmButtonText: "确定",
cancelButtonText: "取消",
type: "warning",
})
.then(() => {
this.$http({
url: this.$http.adornUrl("/product/category/delete"),
method: "post",
data: this.$http.adornData(ids, false),
}).then(({ data }) => {
this.$message({
message: "菜单删除成功",
type: "success",
});
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [node.parent.data.catId];
});
})
.catch(() => {});
console.log("remove", node, data);
},
getMenus() {
this.$http({
url: this.$http.adornUrl("/product/category/list/tree"),
method: "get",
}).then(({ data }) => {
console.log("成功获取到菜单数据...", data.data);
this.menus = data.data;
});
},
},
//生命周期 - 创建完成（可以访问当前this实例）
created() {
this.getMenus();
},
//生命周期 - 挂载完成（可以访问DOM元素）
mounted() {},
beforeCreate() {}, //生命周期 - 创建之前
beforeMount() {}, //生命周期 - 挂载之前
beforeUpdate() {}, //生命周期 - 更新之前
updated() {}, //生命周期 - 更新之后
beforeDestroy() {}, //生命周期 - 销毁之前
destroyed() {}, //生命周期 - 销毁完成
activated() {}, //如果页面有keep-alive缓存功能，这个函数会触发
};
</script>
<style scoped>
</style>
修改三级分类数据 回显
category.vue
<template>
<div>
<el-tree
:data="menus"
:props="defaultProps"
:expand-on-click-node="false"
show-checkbox
node-key="catId"
:default-expanded-keys="expandedKey"
>
<span class="custom-tree-node" slot-scope="{ node, data }">
<span>{{ node.label }}</span>
<span>
<el-button
v-if="node.level <= 2"
type="text"
size="mini"
@click="() => append(data)"
>
Append
</el-button>
<el-button type="text" size="mini" @click="edit(data)">
edit
</el-button>
<el-button
v-if="node.childNodes.length == 0"
type="text"
size="mini"
@click="() => remove(node, data)"
>
Delete
</el-button>
</span>
</span>
</el-tree>
<el-dialog :title="title" :visible.sync="dialogVisible" width="30%">
<el-form :model="category">
<el-form-item label="分类名称">
<el-input v-model="category.name" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="图标">
<el-input v-model="category.icon" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="计量单位">
<el-input
v-model="category.productUnit"
autocomplete="off"
></el-input>
</el-form-item>
</el-form>
<span slot="footer" class="dialog-footer">
<el-button @click="dialogVisible = false">取 消</el-button>
<el-button type="primary" @click="submitData">确 定</el-button>
</span>
</el-dialog>
</div>
</template>
<script>
//这里可以导入其他文件（比如：组件，工具js，第三方插件js，json文件，图片文件等等）
//例如：import 《组件名称》 from '《组件路径》';
export default {
//import引入的组件需要注入到对象中才能使用
components: {},
props: {},
data() {
return {
title: "",
dialogType: "", // edit add
category: {
name: "",
parentCid: 0,
catLevel: 0,
showStatus: 1,
sort: 0,
productUnit: "",
icon: "",
catId: null,
},
dialogVisible: false,
menus: [],
expandedKey: [],
defaultProps: {
children: "children",
label: "name",
},
};
},
//监听属性 类似于data概念
computed: {},
//监控data中的数据变化
watch: {},
//方法集合
methods: {
append(data) {
console.log("append", data);
this.dialogType = "add";
this.title = "添加分类";
this.dialogVisible = true;
this.category.parentCid = data.catId;
this.category.catLevel = data.catLevel * 1 + 1;
},
edit(data) {
console.log("要修改的数据", data);
this.dialogType = "edit";
this.title = "修改分类";
this.dialogVisible = true;
//发送请求获取当前节点最新的数据
this.$http({
url: this.$http.adornUrl(`/product/category/info/${data.catId}`),
method: "get",
}).then(({ data }) => {
//请求成功
console.log("要回显的数据", data);
this.category.name = data.data.name;
this.category.catId = data.data.catId;
this.category.icon = data.data.icon;
this.category.productUnit = data.data.productUnit;
this.category.parentCid = data.data.parentCid;
});
},
submitData() {
if (this.dialogType == "add") {
this.addCategory();
}
if (this.dialogType == "edit") {
this.editCategory();
}
},
//修改三级分类数据
editCategory() {
var { catId, name, icon, productUnit } = this.category;
this.$http({
url: this.$http.adornUrl("/product/category/update"),
method: "post",
data: this.$http.adornData({ catId, name, icon, productUnit }, false),
}).then(({ data }) => {
this.$message({
message: "菜单修改成功",
type: "success",
});
//关闭对话框
this.dialogVisible = false;
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [this.category.parentCid];
});
},
//添加三级分类的方法
addCategory() {
console.log("提交的三级分类数据", this.category);
this.$http({
url: this.$http.adornUrl("/product/category/save"),
method: "post",
data: this.$http.adornData(this.category, false),
}).then(({ data }) => {
this.$message({
message: "菜单保存成功",
type: "success",
});
//关闭对话框
this.dialogVisible = false;
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [this.category.parentCid];
});
},
remove(node, data) {
var ids = [data.catId];
this.$confirm(`是否删除【${data.name}】菜单?`, "提示", {
confirmButtonText: "确定",
cancelButtonText: "取消",
type: "warning",
})
.then(() => {
this.$http({
url: this.$http.adornUrl("/product/category/delete"),
method: "post",
data: this.$http.adornData(ids, false),
}).then(({ data }) => {
this.$message({
message: "菜单删除成功",
type: "success",
});
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [node.parent.data.catId];
});
})
.catch(() => {});
console.log("remove", node, data);
},
getMenus() {
this.$http({
url: this.$http.adornUrl("/product/category/list/tree"),
method: "get",
}).then(({ data }) => {
console.log("成功获取到菜单数据...", data.data);
this.menus = data.data;
});
},
},
//生命周期 - 创建完成（可以访问当前this实例）
created() {
this.getMenus();
},
//生命周期 - 挂载完成（可以访问DOM元素）
mounted() {},
beforeCreate() {}, //生命周期 - 创建之前
beforeMount() {}, //生命周期 - 挂载之前
beforeUpdate() {}, //生命周期 - 更新之前
updated() {}, //生命周期 - 更新之后
beforeDestroy() {}, //生命周期 - 销毁之前
destroyed() {}, //生命周期 - 销毁完成
activated() {}, //如果页面有keep-alive缓存功能，这个函数会触发
};
</script>
<style scoped>
</style>
回显全部数据
<template>
<div>
<el-tree
:data="menus"
:props="defaultProps"
:expand-on-click-node="false"
show-checkbox
node-key="catId"
:default-expanded-keys="expandedKey"
>
<span class="custom-tree-node" slot-scope="{ node, data }">
<span>{{ node.label }}</span>
<span>
<el-button
v-if="node.level <= 2"
type="text"
size="mini"
@click="() => append(data)"
>
Append
</el-button>
<el-button type="text" size="mini" @click="edit(data)">
edit
</el-button>
<el-button
v-if="node.childNodes.length == 0"
type="text"
size="mini"
@click="() => remove(node, data)"
>
Delete
</el-button>
</span>
</span>
</el-tree>
<el-dialog :title="title" :visible.sync="dialogVisible" width="30%">
<el-form :model="category">
<el-form-item label="分类名称">
<el-input v-model="category.name" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="图标">
<el-input v-model="category.icon" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="计量单位">
<el-input
v-model="category.productUnit"
autocomplete="off"
></el-input>
</el-form-item>
</el-form>
<span slot="footer" class="dialog-footer">
<el-button @click="dialogVisible = false">取 消</el-button>
<el-button type="primary" @click="submitData">确 定</el-button>
</span>
</el-dialog>
</div>
</template>
<script>
//这里可以导入其他文件（比如：组件，工具js，第三方插件js，json文件，图片文件等等）
//例如：import 《组件名称》 from '《组件路径》';
export default {
//import引入的组件需要注入到对象中才能使用
components: {},
props: {},
data() {
return {
title: "",
dialogType: "", // edit add
category: {
name: "",
parentCid: 0,
catLevel: 0,
showStatus: 1,
sort: 0,
productUnit: "",
icon: "",
catId: null,
},
dialogVisible: false,
menus: [],
expandedKey: [],
defaultProps: {
children: "children",
label: "name",
},
};
},
//监听属性 类似于data概念
computed: {},
//监控data中的数据变化
watch: {},
//方法集合
methods: {
append(data) {
console.log("append", data);
this.dialogType = "add";
this.title = "添加分类";
this.dialogVisible = true;
this.category.parentCid = data.catId;
this.category.catLevel = data.catLevel * 1 + 1;
},
edit(data) {
console.log("要修改的数据", data);
this.dialogType = "edit";
this.title = "修改分类";
this.dialogVisible = true;
//发送请求获取当前节点最新的数据
this.$http({
url: this.$http.adornUrl(`/product/category/info/${data.catId}`),
method: "get",
}).then(({ data }) => {
//请求成功
console.log("要回显的数据", data);
this.category.name = data.data.name;
this.category.catId = data.data.catId;
this.category.icon = data.data.icon;
this.category.productUnit = data.data.productUnit;
this.category.parentCid = data.data.parentCid;
this.category.catLevel = data.data.catLevel;
this.category.sort = data.data.sort;
this.category.showStatus = data.data.showStatus;
});
},
submitData() {
if (this.dialogType == "add") {
this.addCategory();
}
if (this.dialogType == "edit") {
this.editCategory();
}
},
//修改三级分类数据
editCategory() {
// var { catId, name, icon, productUnit } = this.category;
this.$http({
url: this.$http.adornUrl("/product/category/update"),
method: "post",
data: this.$http.adornData(this.category, false),
}).then(({ data }) => {
this.$message({
message: "菜单修改成功",
type: "success",
});
//关闭对话框
this.dialogVisible = false;
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [this.category.parentCid];
});
},
//添加三级分类的方法
addCategory() {
console.log("提交的三级分类数据", this.category);
this.$http({
url: this.$http.adornUrl("/product/category/save"),
method: "post",
data: this.$http.adornData(this.category, false),
}).then(({ data }) => {
this.$message({
message: "菜单保存成功",
type: "success",
});
//关闭对话框
this.dialogVisible = false;
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [this.category.parentCid];
});
},
remove(node, data) {
var ids = [data.catId];
this.$confirm(`是否删除【${data.name}】菜单?`, "提示", {
confirmButtonText: "确定",
cancelButtonText: "取消",
type: "warning",
})
.then(() => {
this.$http({
url: this.$http.adornUrl("/product/category/delete"),
method: "post",
data: this.$http.adornData(ids, false),
}).then(({ data }) => {
this.$message({
message: "菜单删除成功",
type: "success",
});
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [node.parent.data.catId];
});
})
.catch(() => {});
console.log("remove", node, data);
},
getMenus() {
this.$http({
url: this.$http.adornUrl("/product/category/list/tree"),
method: "get",
}).then(({ data }) => {
console.log("成功获取到菜单数据...", data.data);
this.menus = data.data;
});
},
},
//生命周期 - 创建完成（可以访问当前this实例）
created() {
this.getMenus();
},
//生命周期 - 挂载完成（可以访问DOM元素）
mounted() {},
beforeCreate() {}, //生命周期 - 创建之前
beforeMount() {}, //生命周期 - 挂载之前
beforeUpdate() {}, //生命周期 - 更新之前
updated() {}, //生命周期 - 更新之后
beforeDestroy() {}, //生命周期 - 销毁之前
destroyed() {}, //生命周期 - 销毁完成
activated() {}, //如果页面有keep-alive缓存功能，这个函数会触发
};
</script>
<style scoped>
</style>
设置鼠标点击旁边 对话框不消失的操作
添加功能的回显内容去掉操作
<template>
<div>
<el-tree
:data="menus"
:props="defaultProps"
:expand-on-click-node="false"
show-checkbox
node-key="catId"
:default-expanded-keys="expandedKey"
>
<span class="custom-tree-node" slot-scope="{ node, data }">
<span>{{ node.label }}</span>
<span>
<el-button
v-if="node.level <= 2"
type="text"
size="mini"
@click="() => append(data)"
>
Append
</el-button>
<el-button type="text" size="mini" @click="edit(data)">
edit
</el-button>
<el-button
v-if="node.childNodes.length == 0"
type="text"
size="mini"
@click="() => remove(node, data)"
>
Delete
</el-button>
</span>
</span>
</el-tree>
<el-dialog
:title="title"
:visible.sync="dialogVisible"
width="30%"
:close-on-click-modal="false"
>
<el-form :model="category">
<el-form-item label="分类名称">
<el-input v-model="category.name" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="图标">
<el-input v-model="category.icon" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="计量单位">
<el-input
v-model="category.productUnit"
autocomplete="off"
></el-input>
</el-form-item>
</el-form>
<span slot="footer" class="dialog-footer">
<el-button @click="dialogVisible = false">取 消</el-button>
<el-button type="primary" @click="submitData">确 定</el-button>
</span>
</el-dialog>
</div>
</template>
<script>
//这里可以导入其他文件（比如：组件，工具js，第三方插件js，json文件，图片文件等等）
//例如：import 《组件名称》 from '《组件路径》';
export default {
//import引入的组件需要注入到对象中才能使用
components: {},
props: {},
data() {
return {
title: "",
dialogType: "", // edit add
category: {
name: "",
parentCid: 0,
catLevel: 0,
showStatus: 1,
sort: 0,
productUnit: "",
icon: "",
catId: null,
},
dialogVisible: false,
menus: [],
expandedKey: [],
defaultProps: {
children: "children",
label: "name",
},
};
},
//监听属性 类似于data概念
computed: {},
//监控data中的数据变化
watch: {},
//方法集合
methods: {
append(data) {
console.log("append", data);
this.dialogType = "add";
this.title = "添加分类";
this.dialogVisible = true;
this.category.parentCid = data.catId;
this.category.catLevel = data.catLevel * 1 + 1;
this.category.catId = null;
this.category.name = "";
this.category.icon = "";
this.category.productUnit = "";
this.category.sort = 0;
this.category.showStatus = 1;
},
edit(data) {
console.log("要修改的数据", data);
this.dialogType = "edit";
this.title = "修改分类";
this.dialogVisible = true;
//发送请求获取当前节点最新的数据
this.$http({
url: this.$http.adornUrl(`/product/category/info/${data.catId}`),
method: "get",
}).then(({ data }) => {
//请求成功
console.log("要回显的数据", data);
this.category.name = data.data.name;
this.category.catId = data.data.catId;
this.category.icon = data.data.icon;
this.category.productUnit = data.data.productUnit;
this.category.parentCid = data.data.parentCid;
this.category.catLevel = data.data.catLevel;
this.category.sort = data.data.sort;
this.category.showStatus = data.data.showStatus;
});
},
submitData() {
if (this.dialogType == "add") {
this.addCategory();
}
if (this.dialogType == "edit") {
this.editCategory();
}
},
//修改三级分类数据
editCategory() {
var { catId, name, icon, productUnit } = this.category;
this.$http({
url: this.$http.adornUrl("/product/category/update"),
method: "post",
data: this.$http.adornData({ catId, name, icon, productUnit }, false),
}).then(({ data }) => {
this.$message({
message: "菜单修改成功",
type: "success",
});
//关闭对话框
this.dialogVisible = false;
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [this.category.parentCid];
});
},
//添加三级分类的方法
addCategory() {
console.log("提交的三级分类数据", this.category);
this.$http({
url: this.$http.adornUrl("/product/category/save"),
method: "post",
data: this.$http.adornData(this.category, false),
}).then(({ data }) => {
this.$message({
message: "菜单保存成功",
type: "success",
});
//关闭对话框
this.dialogVisible = false;
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [this.category.parentCid];
});
},
remove(node, data) {
var ids = [data.catId];
this.$confirm(`是否删除【${data.name}】菜单?`, "提示", {
confirmButtonText: "确定",
cancelButtonText: "取消",
type: "warning",
})
.then(() => {
this.$http({
url: this.$http.adornUrl("/product/category/delete"),
method: "post",
data: this.$http.adornData(ids, false),
}).then(({ data }) => {
this.$message({
message: "菜单删除成功",
type: "success",
});
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [node.parent.data.catId];
});
})
.catch(() => {});
console.log("remove", node, data);
},
getMenus() {
this.$http({
url: this.$http.adornUrl("/product/category/list/tree"),
method: "get",
}).then(({ data }) => {
console.log("成功获取到菜单数据...", data.data);
this.menus = data.data;
});
},
},
//生命周期 - 创建完成（可以访问当前this实例）
created() {
this.getMenus();
},
//生命周期 - 挂载完成（可以访问DOM元素）
mounted() {},
beforeCreate() {}, //生命周期 - 创建之前
beforeMount() {}, //生命周期 - 挂载之前
beforeUpdate() {}, //生命周期 - 更新之前
updated() {}, //生命周期 - 更新之后
beforeDestroy() {}, //生命周期 - 销毁之前
destroyed() {}, //生命周期 - 销毁完成
activated() {}, //如果页面有keep-alive缓存功能，这个函数会触发
};
</script>
<style scoped>
</style>
修改 拖拽效果
<template>
<div>
<el-tree
:data="menus"
:props="defaultProps"
:expand-on-click-node="false"
show-checkbox
node-key="catId"
:default-expanded-keys="expandedKey"
draggable
:allow-drop="allowDrop"
>
<span class="custom-tree-node" slot-scope="{ node, data }">
<span>{{ node.label }}</span>
<span>
<el-button
v-if="node.level <= 2"
type="text"
size="mini"
@click="() => append(data)"
>
Append
</el-button>
<el-button type="text" size="mini" @click="edit(data)">
edit
</el-button>
<el-button
v-if="node.childNodes.length == 0"
type="text"
size="mini"
@click="() => remove(node, data)"
>
Delete
</el-button>
</span>
</span>
</el-tree>
<el-dialog
:title="title"
:visible.sync="dialogVisible"
width="30%"
:close-on-click-modal="false"
>
<el-form :model="category">
<el-form-item label="分类名称">
<el-input v-model="category.name" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="图标">
<el-input v-model="category.icon" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="计量单位">
<el-input
v-model="category.productUnit"
autocomplete="off"
></el-input>
</el-form-item>
</el-form>
<span slot="footer" class="dialog-footer">
<el-button @click="dialogVisible = false">取 消</el-button>
<el-button type="primary" @click="submitData">确 定</el-button>
</span>
</el-dialog>
</div>
</template>
<script>
//这里可以导入其他文件（比如：组件，工具js，第三方插件js，json文件，图片文件等等）
//例如：import 《组件名称》 from '《组件路径》';
export default {
//import引入的组件需要注入到对象中才能使用
components: {},
props: {},
data() {
return {
maxLevel: 0,
title: "",
dialogType: "", // edit add
category: {
name: "",
parentCid: 0,
catLevel: 0,
showStatus: 1,
sort: 0,
productUnit: "",
icon: "",
catId: null,
},
dialogVisible: false,
menus: [],
expandedKey: [],
defaultProps: {
children: "children",
label: "name",
},
};
},
//监听属性 类似于data概念
computed: {},
//监控data中的数据变化
watch: {},
//方法集合
methods: {
append(data) {
console.log("append", data);
this.dialogType = "add";
this.title = "添加分类";
this.dialogVisible = true;
this.category.parentCid = data.catId;
this.category.catLevel = data.catLevel * 1 + 1;
this.category.catId = null;
this.category.name = "";
this.category.icon = "";
this.category.productUnit = "";
this.category.sort = 0;
this.category.showStatus = 1;
},
allowDrop(draggingNode, dropNode, type) {
//1.被拖动的当前节点以及所在的父节点总层数不能大于3
//1) 被拖动的当前节点总层数
console.log("allowDrop:", draggingNode, dropNode, type);
this.countNodeLevel(draggingNode.data);
//当前正在拖动的节点+父节点所在的深度不大于3即可
console.log("深度", this.maxLevel)
// this.maxLevel
return false;
},
countNodeLevel(node){
//找出所有子节点，求出最大深度
if(node.children != null && node.children.length > 0){
for(let i = 0; i < node.children.length; i++){
if(node.children[i].catLevel > this.maxLevel){
this.maxLevel = node.children[i].catLevel ;
}
countNodeLevel(node.children[i]);
}
}
},
edit(data) {
console.log("要修改的数据", data);
this.dialogType = "edit";
this.title = "修改分类";
this.dialogVisible = true;
//发送请求获取当前节点最新的数据
this.$http({
url: this.$http.adornUrl(`/product/category/info/${data.catId}`),
method: "get",
}).then(({ data }) => {
//请求成功
console.log("要回显的数据", data);
this.category.name = data.data.name;
this.category.catId = data.data.catId;
this.category.icon = data.data.icon;
this.category.productUnit = data.data.productUnit;
this.category.parentCid = data.data.parentCid;
this.category.catLevel = data.data.catLevel;
this.category.sort = data.data.sort;
this.category.showStatus = data.data.showStatus;
});
},
submitData() {
if (this.dialogType == "add") {
this.addCategory();
}
if (this.dialogType == "edit") {
this.editCategory();
}
},
//修改三级分类数据
editCategory() {
var { catId, name, icon, productUnit } = this.category;
this.$http({
url: this.$http.adornUrl("/product/category/update"),
method: "post",
data: this.$http.adornData({ catId, name, icon, productUnit }, false),
}).then(({ data }) => {
this.$message({
message: "菜单修改成功",
type: "success",
});
//关闭对话框
this.dialogVisible = false;
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [this.category.parentCid];
});
},
//添加三级分类的方法
addCategory() {
console.log("提交的三级分类数据", this.category);
this.$http({
url: this.$http.adornUrl("/product/category/save"),
method: "post",
data: this.$http.adornData(this.category, false),
}).then(({ data }) => {
this.$message({
message: "菜单保存成功",
type: "success",
});
//关闭对话框
this.dialogVisible = false;
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [this.category.parentCid];
});
},
remove(node, data) {
var ids = [data.catId];
this.$confirm(`是否删除【${data.name}】菜单?`, "提示", {
confirmButtonText: "确定",
cancelButtonText: "取消",
type: "warning",
})
.then(() => {
this.$http({
url: this.$http.adornUrl("/product/category/delete"),
method: "post",
data: this.$http.adornData(ids, false),
}).then(({ data }) => {
this.$message({
message: "菜单删除成功",
type: "success",
});
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [node.parent.data.catId];
});
})
.catch(() => {});
console.log("remove", node, data);
},
getMenus() {
this.$http({
url: this.$http.adornUrl("/product/category/list/tree"),
method: "get",
}).then(({ data }) => {
console.log("成功获取到菜单数据...", data.data);
this.menus = data.data;
});
},
},
//生命周期 - 创建完成（可以访问当前this实例）
created() {
this.getMenus();
},
//生命周期 - 挂载完成（可以访问DOM元素）
mounted() {},
beforeCreate() {}, //生命周期 - 创建之前
beforeMount() {}, //生命周期 - 挂载之前
beforeUpdate() {}, //生命周期 - 更新之前
updated() {}, //生命周期 - 更新之后
beforeDestroy() {}, //生命周期 - 销毁之前
destroyed() {}, //生命周期 - 销毁完成
activated() {}, //如果页面有keep-alive缓存功能，这个函数会触发
};
</script>
<style scoped>
</style>
拖拽判断 层级不能大于3
<template>
<div>
<el-tree
:data="menus"
:props="defaultProps"
:expand-on-click-node="false"
show-checkbox
node-key="catId"
:default-expanded-keys="expandedKey"
draggable
:allow-drop="allowDrop"
>
<span class="custom-tree-node" slot-scope="{ node, data }">
<span>{{ node.label }}</span>
<span>
<el-button
v-if="node.level <= 2"
type="text"
size="mini"
@click="() => append(data)"
>
Append
</el-button>
<el-button type="text" size="mini" @click="edit(data)">
edit
</el-button>
<el-button
v-if="node.childNodes.length == 0"
type="text"
size="mini"
@click="() => remove(node, data)"
>
Delete
</el-button>
</span>
</span>
</el-tree>
<el-dialog
:title="title"
:visible.sync="dialogVisible"
width="30%"
:close-on-click-modal="false"
>
<el-form :model="category">
<el-form-item label="分类名称">
<el-input v-model="category.name" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="图标">
<el-input v-model="category.icon" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="计量单位">
<el-input
v-model="category.productUnit"
autocomplete="off"
></el-input>
</el-form-item>
</el-form>
<span slot="footer" class="dialog-footer">
<el-button @click="dialogVisible = false">取 消</el-button>
<el-button type="primary" @click="submitData">确 定</el-button>
</span>
</el-dialog>
</div>
</template>
<script>
//这里可以导入其他文件（比如：组件，工具js，第三方插件js，json文件，图片文件等等）
//例如：import 《组件名称》 from '《组件路径》';
export default {
//import引入的组件需要注入到对象中才能使用
components: {},
props: {},
data() {
return {
maxLevel: 0,
title: "",
dialogType: "", // edit add
category: {
name: "",
parentCid: 0,
catLevel: 0,
showStatus: 1,
sort: 0,
productUnit: "",
icon: "",
catId: null,
},
dialogVisible: false,
menus: [],
expandedKey: [],
defaultProps: {
children: "children",
label: "name",
},
};
},
//监听属性 类似于data概念
computed: {},
//监控data中的数据变化
watch: {},
//方法集合
methods: {
append(data) {
console.log("append", data);
this.dialogType = "add";
this.title = "添加分类";
this.dialogVisible = true;
this.category.parentCid = data.catId;
this.category.catLevel = data.catLevel * 1 + 1;
this.category.catId = null;
this.category.name = "";
this.category.icon = "";
this.category.productUnit = "";
this.category.sort = 0;
this.category.showStatus = 1;
},
allowDrop(draggingNode, dropNode, type) {
//1.被拖动的当前节点以及所在的父节点总层数不能大于3
//1) 被拖动的当前节点总层数
console.log("allowDrop:", draggingNode, dropNode, type);
this.countNodeLevel(draggingNode.data);
//当前正在拖动的节点+父节点所在的深度不大于3即可
let deep = (this.maxLevel - draggingNode.data.catLevel) + 1;
console.log("深度", deep);
// this.maxLevel
if(type == "inner"){
return (deep + dropNode.level) <= 3;
}else{
return (deep + dropNode.parent.level) <= 3;
}
},
countNodeLevel(node){
//找出所有子节点，求出最大深度
if(node.children != null && node.children.length > 0){
for(let i = 0; i < node.children.length; i++){
if(node.children[i].catLevel > this.maxLevel){
this.maxLevel = node.children[i].catLevel ;
}
this.countNodeLevel(node.children[i]);
}
}
},
edit(data) {
console.log("要修改的数据", data);
this.dialogType = "edit";
this.title = "修改分类";
this.dialogVisible = true;
//发送请求获取当前节点最新的数据
this.$http({
url: this.$http.adornUrl(`/product/category/info/${data.catId}`),
method: "get",
}).then(({ data }) => {
//请求成功
console.log("要回显的数据", data);
this.category.name = data.data.name;
this.category.catId = data.data.catId;
this.category.icon = data.data.icon;
this.category.productUnit = data.data.productUnit;
this.category.parentCid = data.data.parentCid;
this.category.catLevel = data.data.catLevel;
this.category.sort = data.data.sort;
this.category.showStatus = data.data.showStatus;
});
},
submitData() {
if (this.dialogType == "add") {
this.addCategory();
}
if (this.dialogType == "edit") {
this.editCategory();
}
},
//修改三级分类数据
editCategory() {
var { catId, name, icon, productUnit } = this.category;
this.$http({
url: this.$http.adornUrl("/product/category/update"),
method: "post",
data: this.$http.adornData({ catId, name, icon, productUnit }, false),
}).then(({ data }) => {
this.$message({
message: "菜单修改成功",
type: "success",
});
//关闭对话框
this.dialogVisible = false;
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [this.category.parentCid];
});
},
//添加三级分类的方法
addCategory() {
console.log("提交的三级分类数据", this.category);
this.$http({
url: this.$http.adornUrl("/product/category/save"),
method: "post",
data: this.$http.adornData(this.category, false),
}).then(({ data }) => {
this.$message({
message: "菜单保存成功",
type: "success",
});
//关闭对话框
this.dialogVisible = false;
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [this.category.parentCid];
});
},
remove(node, data) {
var ids = [data.catId];
this.$confirm(`是否删除【${data.name}】菜单?`, "提示", {
confirmButtonText: "确定",
cancelButtonText: "取消",
type: "warning",
})
.then(() => {
this.$http({
url: this.$http.adornUrl("/product/category/delete"),
method: "post",
data: this.$http.adornData(ids, false),
}).then(({ data }) => {
this.$message({
message: "菜单删除成功",
type: "success",
});
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [node.parent.data.catId];
});
})
.catch(() => {});
console.log("remove", node, data);
},
getMenus() {
this.$http({
url: this.$http.adornUrl("/product/category/list/tree"),
method: "get",
}).then(({ data }) => {
console.log("成功获取到菜单数据...", data.data);
this.menus = data.data;
});
},
},
//生命周期 - 创建完成（可以访问当前this实例）
created() {
this.getMenus();
},
//生命周期 - 挂载完成（可以访问DOM元素）
mounted() {},
beforeCreate() {}, //生命周期 - 创建之前
beforeMount() {}, //生命周期 - 挂载之前
beforeUpdate() {}, //生命周期 - 更新之前
updated() {}, //生命周期 - 更新之后
beforeDestroy() {}, //生命周期 - 销毁之前
destroyed() {}, //生命周期 - 销毁完成
activated() {}, //如果页面有keep-alive缓存功能，这个函数会触发
};
</script>
<style scoped>
</style>
以上是关于第177天学习打卡（项目 谷粒商城19 基本效果修改 拖拽效果 ）的主要内容，如果未能解决你的问题，请参考以下文章
第175天学习打卡（项目 谷粒商城17 API三级分类 删除页面效果 逻辑删除）
第175天学习打卡（项目 谷粒商城17 API三级分类 删除页面效果 逻辑删除）
第179天学习打卡（项目 谷粒商城21 删除 批量删除小结 品牌管理 效果优化与快速显示开关）
第178天学习打卡（项目 谷粒商城20 商品服务API 修改拖拽 数据收集修改批量拖拽效果）
第185天学习打卡（项目 谷粒商城27 JSR303自定义校验注解 SPU SKU 属性分组效果前端组件抽取 父子组件交互）