Validate field default values

src/components/table.jsx

@@ -389,6 +389,20 @@ export default function Table(props) {
                         length: 255,
                         increment: incr,
                       });
+                    } else if (
+                      f.type === "BLOB" ||
+                      f.type === "JSON" ||
+                      f.type === "GEOMETRY" ||
+                      f.type === "TEXT" ||
+                      incr
+                    ) {
+                      updateField(props.tableData.id, j, {
+                        type: value,
+                        increment: incr,
+                        default: "",
+                        length: "",
+                        values: [],
+                      });
                     } else {
                       updateField(props.tableData.id, j, {
                         type: value,
@@ -542,7 +556,7 @@ export default function Table(props) {
                           />
                         </>
                       )}
-                      {f.type === "VARCHAR" && (
+                      {(f.type === "VARCHAR" || f.type === "CHAR") && (
                         <>
                           <div className="font-semibold">Length</div>
                           <InputNumber

src/components/table_overview.jsx

@@ -235,6 +235,20 @@ export default function TableOverview(props) {
                               length: 255,
                               increment: incr,
                             });
+                          } else if (
+                            f.type === "BLOB" ||
+                            f.type === "JSON" ||
+                            f.type === "GEOMETRY" ||
+                            f.type === "TEXT" ||
+                            incr
+                          ) {
+                            updateField(props.tableData.id, j, {
+                              type: value,
+                              increment: incr,
+                              default: "",
+                              length: "",
+                              values: [],
+                            });
                           } else {
                             updateField(i, j, {
                               type: value,
@@ -389,7 +403,7 @@ export default function TableOverview(props) {
                                 />
                               </>
                             )}
-                            {f.type === "VARCHAR" && (
+                            {(f.type === "VARCHAR" || f.type === "CHAR") && (
                               <>
                                 <div className="font-semibold">Length</div>
                                 <InputNumber

src/utils/index.js

@@ -115,6 +115,29 @@ function arrayIsEqual(arr1, arr2) {
   return JSON.stringify(arr1) === JSON.stringify(arr2);
 }
 
+function checkDefault(field) {
+  if (field.default === "") return true;
+
+  switch (field.type) {
+    case "INT":
+    case "BIGINT":
+    case "SMALLINT":
+      return /^\d*$/.test(field.default);
+    case "ENUM":
+    case "SET":
+      return field.values.includes(field.default);
+    case "CHAR":
+    case "VARCHAR":
+      return field.default.length <= field.length;
+    case "BOOLEAN":
+      return (
+        field.default.trim() === "false" || field.default.trim() === "true"
+      );
+    default:
+      return true;
+  }
+}
+
 function validateDiagram(diagram) {
   const issues = [];
   const duplicateTableNames = {};
@@ -140,6 +163,7 @@ function validateDiagram(diagram) {
       if (field.name === "") {
         issues.push(`Empty field name in table "${table.name}"`);
       }
+
       if (field.type === "") {
         issues.push(`Empty field type in table "${table.name}"`);
       } else if (field.type === "ENUM" || field.type === "SET") {
@@ -149,6 +173,13 @@ function validateDiagram(diagram) {
           );
         }
       }
+
+      if (!checkDefault(field)) {
+        issues.push(
+          `Default value for field "${field.name}" in table "${table.name}" does not match its type.`
+        );
+      }
+
       if (duplicateFieldNames[field.name]) {
         issues.push(`Duplicate table fields in table "${table.name}"`);
       } else {