refactor(WorkOrderEdit): 重构导航逻辑并修复步骤切换问题

将返回上一页和返回主页的逻辑分离为独立的函数
修复步骤切换时的条件判断错误
移除未使用的参数并统一函数命名

src/pages/WorkOrderEdit/index.vue

@@ -4,9 +4,9 @@
         <view class="TopBox FlexBox">
             <view class="iconBox FlexBox">
                 <!-- 返回上一页 -->
-                <u-icon name="arrow-leftward" size="24" @click="prevStep"></u-icon>
+                <u-icon name="arrow-leftward" size="24" @click="goBack"></u-icon>
                 <!-- 返回主页 -->
-                <u-icon name="home" size="24"></u-icon>
+                <u-icon name="home" size="24" @click="goHome"></u-icon>
             </view>
             <view class="Title">{{ currentStep.Title }}</view>
             <view class="informBox">
@@ -24,7 +24,7 @@
             </ApplyForMachine>
         </view>
         <view class="FootBox">
-            <u-button :text="currentStep.PrevBtnName" type="info"></u-button>
+            <u-button :text="currentStep.PrevBtnName" type="info" @click="prevStep"></u-button>
             <u-button :text="currentStep.NextBtnName" color="#2979ff" @click="nextStep"></u-button>
         </view>
     </view>
@@ -90,8 +90,24 @@ const stepList = ref([
 ])
 
 // 返回上一步
-const prevStep = (id) => {
-    if (id == '3a') {
+const goBack = () => {
+    if (currentStep.value.id == '3a') {
+        currentStep.value = stepList.value.find(item => item.id == 3);
+    } if (currentStep.value.id == 1) {
+        goHome();
+    } else {
+        currentStep.value = stepList.value.find(item => item.id == currentStep.value.id - 1);
+    }
+}
+
+// 返回主页
+const goHome = () => {
+    uni.switchTab({ url: '/pages/WorkOrderApproval/index' })
+}
+
+// 点击上一步
+const prevStep = () => {
+    if (currentStep.value.id == '3a') {
         currentStep.value = stepList.value.find(item => item.id == 3);
     } else {
         currentStep.value = stepList.value.find(item => item.id == currentStep.value.id - 1);
@@ -99,7 +115,7 @@ const prevStep = (id) => {
 }
 
 // 点击下一步
-const nextStep = (id) => {
+const nextStep = () => {
     if (currentStep.value.id == 1) {
         console.log(basicsInfoRef.value.getFormData());
         allData.value.BasicsInfo = basicsInfoRef.value.getFormData();