{"record":{"id":"e32aeda165535719","repo":"framework7io/framework7","slug":"framework7-error-constructing-route-url-from-pass","errorCode":null,"errorMessage":"Framework7: error constructing route URL from passed params:\\nRoute: ${path}\\n${error.toString()}","messagePattern":"Framework7: error constructing route URL from passed params:\\\\nRoute: (.+?)\\\\n(.+?)","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"src/core/modules/router/router-class.js","lineNumber":346,"sourceCode":"    if (url === '') {\n      return '/';\n    }\n\n    if (!url) {\n      throw new Error(`Framework7: can't construct URL for route with name \"${name}\"`);\n    }\n    return url;\n  }\n\n  // eslint-disable-next-line\n  constructRouteUrl(route, { params, query } = {}) {\n    const { path } = route;\n    const toUrl = compile(path);\n    let url;\n    try {\n      url = toUrl(params || {});\n    } catch (error) {\n      throw new Error(\n        `Framework7: error constructing route URL from passed params:\\nRoute: ${path}\\n${error.toString()}`,\n      );\n    }\n\n    if (query) {\n      if (typeof query === 'string') url += `?${query}`;\n      else if (Object.keys(query).length) url += `?${serializeObject(query)}`;\n    }\n\n    return url;\n  }\n\n  findTabRouteUrl(tabEl) {\n    const router = this;\n    const $tabEl = $(tabEl);\n    const parentPath = router.currentRoute.route.parentPath;\n    const tabId = $tabEl.attr('id');\n    const flattenedRoutes = router.flattenRoutes(router.routes);","sourceCodeStart":328,"sourceCodeEnd":364,"githubUrl":"https://github.com/framework7io/framework7/blob/655759126686766530a027b2f8f369c991d63d1c/src/core/modules/router/router-class.js#L328-L364","documentation":"`constructRouteUrl` compiles the route path with path-to-regexp's `compile` and fills it with the provided params. If `toUrl(params)` throws (e.g. an expected param is missing or has an invalid type for the pattern), the original error is wrapped and rethrown with the route path and `error.toString()` included.","triggerScenarios":"Navigating/generating a URL for a route like `/user/:id/` while omitting `id` in params, or passing params that fail the path template's expectations during compile-time substitution.","commonSituations":"Params object built dynamically where a key is undefined; renamed params in routes without updating callers; nested route params not propagated down.","solutions":["Read the inner error in the message (after \\nRoute:) to see which param failed","Supply all required params for the route's dynamic segments","Fix param key names to match the route template exactly","Guard the call: build params and verify required keys before generateUrl/navigate"],"exampleFix":"// before\nrouter.navigate({ name: 'user', params: {} }); // route: /user/:id/\n\n// after\nrouter.navigate({ name: 'user', params: { id: 42 } });","handlingStrategy":"try-catch","validationCode":"const required = (route.path.match(/:[^/]+/g) || []).map(s => s.slice(1));\nconst missing = required.filter(k => !(params || {})[k]);\nif (missing.length) throw new Error(`Params required by ${route.path}: ${missing.join(',')}`);","typeGuard":"function hasRequiredParams(route, params) {\n  const required = (route.path.match(/:[^/]+/g) || []).map(s => s.slice(1));\n  return required.every(k => params && params[k] !== undefined);\n}","tryCatchPattern":"try {\n  const url = router.generateUrl({ name, params });\n} catch (e) {\n  if (/error constructing route URL/.test(e.message)) {\n    console.error('Bad params for route path:', e.message.split('\\n').slice(1).join(' '));\n  } else throw e;\n}","preventionTips":["Inspect the wrapped inner error text for the failing param","Validate that every :segment in the route path has a matching param","Build params objects from a typed factory, not ad-hoc literals","Add tests covering navigate/generateUrl with dynamic routes"],"tags":["router","url-generation","params","framework7"],"backgroundTag":"missing-route-param","analyzedSha":"655759126686766530a027b2f8f369c991d63d1c","analyzedAt":"2026-09-02T19:48:40.711Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-10T02:17:09.455Z"}