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By default, it's set to ",(0,l.jsx)(n.code,{children:"undefined"}),":"]}),"\n",(0,l.jsxs)(n.table,{children:[(0,l.jsx)(n.thead,{children:(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.th,{children:(0,l.jsx)(n.code,{children:"options.values"})}),(0,l.jsx)(n.th,{children:"Behavior"})]})}),(0,l.jsxs)(n.tbody,{children:[(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.td,{children:(0,l.jsx)(n.code,{children:"undefined"})}),(0,l.jsxs)(n.td,{children:[(0,l.jsx)(n.code,{children:"undefined"})," values don't exist"]})]}),(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.td,{children:(0,l.jsx)(n.code,{children:"null"})}),(0,l.jsxs)(n.td,{children:[(0,l.jsx)(n.code,{children:"undefined"})," and ",(0,l.jsx)(n.code,{children:"null"})," values don't exist"]})]}),(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.td,{children:(0,l.jsx)(n.code,{children:"falsy"})}),(0,l.jsxs)(n.td,{children:["Falsy values (empty strings, ",(0,l.jsx)(n.code,{children:"0"}),", ",(0,l.jsx)(n.code,{children:"false"}),", ",(0,l.jsx)(n.code,{children:"null"})," and ",(0,l.jsx)(n.code,{children:"undefined"})," values don't exist"]})]})]})]}),"\n",(0,l.jsxs)(n.p,{children:[(0,l.jsx)(n.code,{children:"options.checkNull"})," and ",(0,l.jsx)(n.code,{children:"options.checkFalsy"})," are deprecated options.\nThey are aliases to setting ",(0,l.jsx)(n.code,{children:"options.values"})," to ",(0,l.jsx)(n.code,{children:"null"})," and ",(0,l.jsx)(n.code,{children:"falsy"}),", respectively."]}),"\n",(0,l.jsx)(n.admonition,{type:"note",children:(0,l.jsxs)(n.p,{children:["Using ",(0,l.jsx)(n.code,{children:".exists()"})," is only necessary if you aren't adding any other validator or sanitizer."]})}),"\n",(0,l.jsx)(n.h3,{id:"isarray",children:(0,l.jsx)(n.code,{children:".isArray()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"isArray(options?: { min?: number; 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Defaults to ",(0,l.jsx)(n.code,{children:"chain"}),"."]})]})})]}),"\n",(0,l.jsx)(n.p,{children:"Stops running the validation chain if any of the previous validators failed."}),"\n",(0,l.jsx)(n.p,{children:"This is useful to prevent a custom validator that touches a database or external API from running\nwhen you know it will fail."}),"\n",(0,l.jsxs)(n.p,{children:[(0,l.jsx)(n.code,{children:".bail()"})," can be used multiple times in the same validation chain if desired:"]}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-js",children:"body('username')\n .isEmail()\n // If not an email, stop here\n .bail()\n .custom(checkDenylistDomain)\n // If domain is not allowed, don't go check if it already exists\n .bail()\n .custom(checkEmailExists);\n"})}),"\n",(0,l.jsxs)(n.p,{children:["If the ",(0,l.jsx)(n.code,{children:"level"})," option is set to ",(0,l.jsx)(n.code,{children:"request"}),", then also no further validation chains will run on the current request.\nFor example:"]}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"app.get(\n '/search',\n query('query').notEmpty().bail({ level: 'request' }),\n // If `query` is empty, then the following validation chains won't run:\n query('query_type').isIn(['user', 'posts']),\n query('num_results').isInt(),\n (req, res) => {\n // Handle request\n },\n);\n"})}),"\n",(0,l.jsx)(n.admonition,{type:"caution",children:(0,l.jsxs)(n.p,{children:["Functions such as ",(0,l.jsx)(n.a,{href:"/docs/next/api/one-of",children:(0,l.jsx)(n.code,{children:"oneOf()"})})," and ",(0,l.jsx)(n.a,{href:"/docs/next/api/check-exact",children:(0,l.jsx)(n.code,{children:"checkExact()"})})," can become slower\nwhen using request-level bail, since validation chains that would normally run in parallel need to\nrun in sequence."]})}),"\n",(0,l.jsx)(n.h3,{id:"if",children:(0,l.jsx)(n.code,{children:".if()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"if(condition: CustomValidator | ContextRunner): ValidationChain\n"})}),"\n",(0,l.jsx)(n.p,{children:"Adds a condition on whether the validation chain should continue running on a field or not."}),"\n",(0,l.jsxs)(n.p,{children:["The condition may be either a ",(0,l.jsx)(n.a,{href:"#custom",children:"custom validator"})," or a ",(0,l.jsxs)(n.a,{href:"/docs/next/api/misc#contextrunner",children:[(0,l.jsx)(n.code,{children:"ContextRunner"})," instance"]}),"."]}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-js",children:"body('newPassword')\n // Only validate if the old password has been provided\n .if((value, { req }) => req.body.oldPassword)\n // Or, use a validation chain instead\n .if(body('oldPassword').notEmpty())\n // The length of the new password will only be checked if `oldPassword` is provided.\n .isLength({ min: 6 });\n"})}),"\n",(0,l.jsx)(n.h3,{id:"not",children:(0,l.jsx)(n.code,{children:".not()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"not(): ValidationChain\n"})}),"\n",(0,l.jsx)(n.p,{children:"Negates the result of the next validator in the chain."}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"check('weekday').not().isIn(['sunday', 'saturday']);\n"})}),"\n",(0,l.jsx)(n.h3,{id:"optional",children:(0,l.jsx)(n.code,{children:".optional()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"optional(options?: boolean | {\n values?: 'undefined' | 'null' | 'falsy',\n nullable?: boolean,\n checkFalsy?: boolean,\n}): ValidationChain\n"})}),"\n",(0,l.jsx)(n.p,{children:"Marks the current validation chain as optional.\nAn optional field skips validation depending on its value, instead of failing it."}),"\n",(0,l.jsxs)(n.p,{children:["Which values are considered optional depends on ",(0,l.jsx)(n.code,{children:"options.values"}),".\nBy default, it's set to ",(0,l.jsx)(n.code,{children:"undefined"}),":"]}),"\n",(0,l.jsxs)(n.table,{children:[(0,l.jsx)(n.thead,{children:(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.th,{children:(0,l.jsx)(n.code,{children:"options.values"})}),(0,l.jsx)(n.th,{children:"Behavior"})]})}),(0,l.jsxs)(n.tbody,{children:[(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.td,{children:(0,l.jsx)(n.code,{children:"undefined"})}),(0,l.jsxs)(n.td,{children:[(0,l.jsx)(n.code,{children:"undefined"})," values are optional"]})]}),(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.td,{children:(0,l.jsx)(n.code,{children:"null"})}),(0,l.jsxs)(n.td,{children:[(0,l.jsx)(n.code,{children:"undefined"})," and ",(0,l.jsx)(n.code,{children:"null"})," values are optional"]})]}),(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.td,{children:(0,l.jsx)(n.code,{children:"falsy"})}),(0,l.jsxs)(n.td,{children:["Falsy values (empty strings, 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deleted file mode 100644
index a36c2d9..0000000
--- a/assets/js/f0dd6a1c.db6b0348.js
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is to verify that an e-mail address doesn't already exists.\nIf it does, return an error:"]}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"app.post(\n '/signup',\n body('email').custom(async value => {\n const existingUser = await Users.findUserByEmail(value);\n if (existingUser) {\n throw new Error('E-mail already in use');\n }\n }),\n (req, res) => {\n // Handle request\n },\n);\n"})}),"\n",(0,l.jsx)(n.h3,{id:"exists",children:(0,l.jsx)(n.code,{children:".exists()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"exists(options?: {\n values?: 'undefined' | 'null' | 'falsy',\n checkNull?: boolean,\n checkFalsy?: boolean\n}): ValidationChain\n"})}),"\n",(0,l.jsx)(n.p,{children:"Adds a validator to check if the field exists."}),"\n",(0,l.jsxs)(n.p,{children:["Which values are considered existent depends on ",(0,l.jsx)(n.code,{children:"options.values"}),". By default, it's set to ",(0,l.jsx)(n.code,{children:"undefined"}),":"]}),"\n",(0,l.jsxs)(n.table,{children:[(0,l.jsx)(n.thead,{children:(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.th,{children:(0,l.jsx)(n.code,{children:"options.values"})}),(0,l.jsx)(n.th,{children:"Behavior"})]})}),(0,l.jsxs)(n.tbody,{children:[(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.td,{children:(0,l.jsx)(n.code,{children:"undefined"})}),(0,l.jsxs)(n.td,{children:[(0,l.jsx)(n.code,{children:"undefined"})," values don't exist"]})]}),(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.td,{children:(0,l.jsx)(n.code,{children:"null"})}),(0,l.jsxs)(n.td,{children:[(0,l.jsx)(n.code,{children:"undefined"})," and ",(0,l.jsx)(n.code,{children:"null"})," values don't exist"]})]}),(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.td,{children:(0,l.jsx)(n.code,{children:"falsy"})}),(0,l.jsxs)(n.td,{children:["Falsy values (empty strings, ",(0,l.jsx)(n.code,{children:"0"}),", ",(0,l.jsx)(n.code,{children:"false"}),", ",(0,l.jsx)(n.code,{children:"null"})," and ",(0,l.jsx)(n.code,{children:"undefined"})," values don't exist"]})]})]})]}),"\n",(0,l.jsxs)(n.p,{children:[(0,l.jsx)(n.code,{children:"options.checkNull"})," and ",(0,l.jsx)(n.code,{children:"options.checkFalsy"})," are deprecated options.\nThey are aliases to setting ",(0,l.jsx)(n.code,{children:"options.values"})," to ",(0,l.jsx)(n.code,{children:"null"})," and ",(0,l.jsx)(n.code,{children:"falsy"}),", respectively."]}),"\n",(0,l.jsx)(n.admonition,{type:"note",children:(0,l.jsxs)(n.p,{children:["Using ",(0,l.jsx)(n.code,{children:".exists()"})," is only necessary if you aren't adding any other validator or sanitizer."]})}),"\n",(0,l.jsx)(n.h3,{id:"isarray",children:(0,l.jsx)(n.code,{children:".isArray()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"isArray(options?: { min?: number; max?: number }): ValidationChain\n"})}),"\n",(0,l.jsxs)(n.p,{children:["Adds a validator to check that a value is an array.\nThis is analogous to ",(0,l.jsxs)(n.a,{href:"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray",children:["the JavaScript function ",(0,l.jsx)(n.code,{children:"Array.isArray(value)"})]}),"."]}),"\n",(0,l.jsxs)(n.p,{children:["You can also check that the array's length is greater than or equal to ",(0,l.jsx)(n.code,{children:"options.min"})," and/or\nthat it's less than or equal to ",(0,l.jsx)(n.code,{children:"options.max"}),"."]}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"// Verifies that the friends list is an array\nbody('friends').isArray();\n\n// Verifies that ingredients is an array with length >= 0\nbody('ingredients').isArray({ min: 0 });\n\n// Verifies that team_members is an array with length >= 0 and <= 10\ncheck('team_members').isArray({ min: 0, max: 10 });\n"})}),"\n",(0,l.jsx)(n.h3,{id:"isobject",children:(0,l.jsx)(n.code,{children:".isObject()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"isObject(options?: { strict?: boolean }): ValidationChain\n"})}),"\n",(0,l.jsxs)(n.p,{children:["Adds a validator to check that a value is an object.\nFor example, ",(0,l.jsx)(n.code,{children:"{}"}),", ",(0,l.jsx)(n.code,{children:"{ foo: 'bar' }"})," and ",(0,l.jsx)(n.code,{children:"new MyCustomClass()"})," would all pass this validator."]}),"\n",(0,l.jsxs)(n.p,{children:["If the ",(0,l.jsx)(n.code,{children:"strict"})," option is set to ",(0,l.jsx)(n.code,{children:"false"}),", then this validator works analogous to\n",(0,l.jsxs)(n.a,{href:"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof",children:[(0,l.jsx)(n.code,{children:"typeof value === 'object'"})," in pure JavaScript"]}),",\nwhere both arrays and the ",(0,l.jsx)(n.code,{children:"null"})," value are considered objects."]}),"\n",(0,l.jsx)(n.h3,{id:"isstring",children:(0,l.jsx)(n.code,{children:".isString()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"isString(): ValidationChain\n"})}),"\n",(0,l.jsxs)(n.p,{children:["Adds a validator to check that a value is a string.\nThis is analogous to a ",(0,l.jsxs)(n.a,{href:"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof",children:[(0,l.jsx)(n.code,{children:"typeof value === 'string'"})," in pure JavaScript"]}),"."]}),"\n",(0,l.jsx)(n.h3,{id:"isulid",children:(0,l.jsx)(n.code,{children:".isULID()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"isULID(): ValidationChain\n"})}),"\n",(0,l.jsxs)(n.p,{children:["Adds a validator to check that a value is an ",(0,l.jsx)(n.a,{href:"https://github.com/ulid/spec",children:"ULID"}),"."]}),"\n",(0,l.jsx)(n.h3,{id:"notempty",children:(0,l.jsx)(n.code,{children:".notEmpty()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"notEmpty(): ValidationChain\n"})}),"\n",(0,l.jsxs)(n.p,{children:["Adds a validator to check that a value is a string that's not empty.\nThis is analogous to ",(0,l.jsx)(n.code,{children:".not().isEmpty()"}),"."]}),"\n",(0,l.jsx)(n.h3,{id:"standard-validators",children:"Standard validators"}),"\n",(0,l.jsx)(n.admonition,{type:"info",children:(0,l.jsxs)(n.p,{children:["Please check the documentation on standard validators ",(0,l.jsx)(n.a,{href:"/docs/next/guides/validation-chain#standard-validatorssanitizers",children:"here"}),"."]})}),"\n",(0,l.jsx)(c,{}),"\n",(0,l.jsx)(n.h2,{id:"built-in-sanitizers",children:"Built-in sanitizers"}),"\n",(0,l.jsx)(n.h3,{id:"customsanitizer",children:(0,l.jsx)(n.code,{children:".customSanitizer()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"customSanitizer(sanitizer: (value, { req, location, path }) => any): ValidationChain\n"})}),"\n",(0,l.jsx)(n.p,{children:"Adds a custom sanitizer function to the chain.\nThe value returned by the function will become the new value of the field."}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"app.post('/object/:id', param('id').customSanitizer((value, { req }) => {\n // In this app, users have MongoDB style object IDs, everything else, numbers\n return req.query.type === 'user' ? ObjectId(value) : Number(value);\n})), (req, res) => {\n // Handle request\n});\n"})}),"\n",(0,l.jsx)(n.h3,{id:"default",children:(0,l.jsx)(n.code,{children:".default()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"default(defaultValue: any): ValidationChain\n"})}),"\n",(0,l.jsxs)(n.p,{children:["Replaces the value of the field if it's either an empty string, ",(0,l.jsx)(n.code,{children:"null"}),", ",(0,l.jsx)(n.code,{children:"undefined"}),", or ",(0,l.jsx)(n.code,{children:"NaN"}),"."]}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"app.post('/', body('username').default('foo'), (req, res, next) => {\n // 'bar' => 'bar'\n // '' => 'foo'\n // undefined => 'foo'\n // null => 'foo'\n // NaN => 'foo'\n});\n"})}),"\n",(0,l.jsx)(n.h3,{id:"replace",children:(0,l.jsx)(n.code,{children:".replace()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"replace(valuesFrom: any[], valueTo: any): ValidationChain\n"})}),"\n",(0,l.jsxs)(n.p,{children:["Replaces the value of the field with ",(0,l.jsx)(n.code,{children:"valueTo"})," whenever the current value is in ",(0,l.jsx)(n.code,{children:"valuesFrom"}),"."]}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"app.post('/', body('username').replace(['bar', 'BAR'], 'foo'), (req, res, next) => {\n // 'bar_' => 'bar_'\n // 'bar' => 'foo'\n // 'BAR' => 'foo'\n console.log(req.body.username);\n});\n"})}),"\n",(0,l.jsx)(n.h3,{id:"toarray",children:(0,l.jsx)(n.code,{children:".toArray()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"toArray(): ValidationChain\n"})}),"\n",(0,l.jsxs)(n.p,{children:["Transforms the value to an array. If it already is one, nothing is done. ",(0,l.jsx)(n.code,{children:"undefined"})," values become empty arrays."]}),"\n",(0,l.jsx)(n.h3,{id:"tolowercase",children:(0,l.jsx)(n.code,{children:".toLowerCase()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"toLowerCase(): ValidationChain\n"})}),"\n",(0,l.jsx)(n.p,{children:"Converts the value to lower case. If not a string, does nothing."}),"\n",(0,l.jsx)(n.h3,{id:"touppercase",children:(0,l.jsx)(n.code,{children:".toUpperCase()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"toUpperCase(): ValidationChain\n"})}),"\n",(0,l.jsx)(n.p,{children:"Converts the value to upper case. If not a string, does nothing."}),"\n",(0,l.jsx)(n.h3,{id:"standard-sanitizers",children:"Standard sanitizers"}),"\n",(0,l.jsx)(n.admonition,{type:"info",children:(0,l.jsxs)(n.p,{children:["Please check the documentation on standard sanitizers ",(0,l.jsx)(n.a,{href:"/docs/next/guides/validation-chain#standard-validatorssanitizers",children:"here"}),"."]})}),"\n",(0,l.jsx)(h,{}),"\n",(0,l.jsx)(n.h2,{id:"modifiers",children:"Modifiers"}),"\n",(0,l.jsx)(n.h3,{id:"bail",children:(0,l.jsx)(n.code,{children:".bail()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"bail(options?: { level: 'chain' | 'request' }): ValidationChain\n"})}),"\n",(0,l.jsx)(n.p,{children:(0,l.jsx)(n.strong,{children:"Parameters:"})}),"\n",(0,l.jsxs)(n.table,{children:[(0,l.jsx)(n.thead,{children:(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.th,{children:"Name"}),(0,l.jsx)(n.th,{children:"Description"})]})}),(0,l.jsx)(n.tbody,{children:(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.td,{children:(0,l.jsx)(n.code,{children:"options.level"})}),(0,l.jsxs)(n.td,{children:["The level at which the validation chain should be stopped. Defaults to ",(0,l.jsx)(n.code,{children:"chain"}),"."]})]})})]}),"\n",(0,l.jsx)(n.p,{children:"Stops running the validation chain if any of the previous validators failed."}),"\n",(0,l.jsx)(n.p,{children:"This is useful to prevent a custom validator that touches a database or external API from running\nwhen you know it will fail."}),"\n",(0,l.jsxs)(n.p,{children:[(0,l.jsx)(n.code,{children:".bail()"})," can be used multiple times in the same validation chain if desired:"]}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-js",children:"body('username')\n .isEmail()\n // If not an email, stop here\n .bail()\n .custom(checkDenylistDomain)\n // If domain is not allowed, don't go check if it already exists\n .bail()\n .custom(checkEmailExists);\n"})}),"\n",(0,l.jsxs)(n.p,{children:["If the ",(0,l.jsx)(n.code,{children:"level"})," option is set to ",(0,l.jsx)(n.code,{children:"request"}),", then also no further validation chains will run on the current request.\nFor example:"]}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"app.get(\n '/search',\n query('query').notEmpty().bail({ level: 'request' }),\n // If `query` is empty, then the following validation chains won't run:\n query('query_type').isIn(['user', 'posts']),\n query('num_results').isInt(),\n (req, res) => {\n // Handle request\n },\n);\n"})}),"\n",(0,l.jsx)(n.admonition,{type:"caution",children:(0,l.jsxs)(n.p,{children:["Functions such as ",(0,l.jsx)(n.a,{href:"/docs/next/api/one-of",children:(0,l.jsx)(n.code,{children:"oneOf()"})})," and ",(0,l.jsx)(n.a,{href:"/docs/next/api/check-exact",children:(0,l.jsx)(n.code,{children:"checkExact()"})})," can become slower\nwhen using request-level bail, since validation chains that would normally run in parallel need to\nrun in sequence."]})}),"\n",(0,l.jsx)(n.h3,{id:"if",children:(0,l.jsx)(n.code,{children:".if()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"if(condition: CustomValidator | ContextRunner): ValidationChain\n"})}),"\n",(0,l.jsx)(n.p,{children:"Adds a condition on whether the validation chain should continue running on a field or not."}),"\n",(0,l.jsxs)(n.p,{children:["The condition may be either a ",(0,l.jsx)(n.a,{href:"#custom",children:"custom validator"})," or a ",(0,l.jsxs)(n.a,{href:"/docs/next/api/misc#contextrunner",children:[(0,l.jsx)(n.code,{children:"ContextRunner"})," instance"]}),"."]}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-js",children:"body('newPassword')\n // Only validate if the old password has been provided\n .if((value, { req }) => req.body.oldPassword)\n // Or, use a validation chain instead\n .if(body('oldPassword').notEmpty())\n // The length of the new password will only be checked if `oldPassword` is provided.\n .isLength({ min: 6 });\n"})}),"\n",(0,l.jsx)(n.h3,{id:"not",children:(0,l.jsx)(n.code,{children:".not()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"not(): ValidationChain\n"})}),"\n",(0,l.jsx)(n.p,{children:"Negates the result of the next validator in the chain."}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"check('weekday').not().isIn(['sunday', 'saturday']);\n"})}),"\n",(0,l.jsx)(n.h3,{id:"optional",children:(0,l.jsx)(n.code,{children:".optional()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"optional(options?: boolean | {\n values?: 'undefined' | 'null' | 'falsy',\n nullable?: boolean,\n checkFalsy?: boolean,\n}): ValidationChain\n"})}),"\n",(0,l.jsx)(n.p,{children:"Marks the current validation chain as optional.\nAn optional field skips validation depending on its value, instead of failing it."}),"\n",(0,l.jsxs)(n.p,{children:["Which values are considered optional depends on ",(0,l.jsx)(n.code,{children:"options.values"}),".\nBy default, it's set to ",(0,l.jsx)(n.code,{children:"undefined"}),":"]}),"\n",(0,l.jsxs)(n.table,{children:[(0,l.jsx)(n.thead,{children:(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.th,{children:(0,l.jsx)(n.code,{children:"options.values"})}),(0,l.jsx)(n.th,{children:"Behavior"})]})}),(0,l.jsxs)(n.tbody,{children:[(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.td,{children:(0,l.jsx)(n.code,{children:"undefined"})}),(0,l.jsxs)(n.td,{children:[(0,l.jsx)(n.code,{children:"undefined"})," values are optional"]})]}),(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.td,{children:(0,l.jsx)(n.code,{children:"null"})}),(0,l.jsxs)(n.td,{children:[(0,l.jsx)(n.code,{children:"undefined"})," and ",(0,l.jsx)(n.code,{children:"null"})," values are optional"]})]}),(0,l.jsxs)(n.tr,{children:[(0,l.jsx)(n.td,{children:(0,l.jsx)(n.code,{children:"falsy"})}),(0,l.jsxs)(n.td,{children:["Falsy values (empty strings, ",(0,l.jsx)(n.code,{children:"0"}),", ",(0,l.jsx)(n.code,{children:"false"}),", ",(0,l.jsx)(n.code,{children:"null"})," and ",(0,l.jsx)(n.code,{children:"undefined"})," values are optional"]})]})]})]}),"\n",(0,l.jsxs)(n.p,{children:[(0,l.jsx)(n.code,{children:"options.nullable"})," and ",(0,l.jsx)(n.code,{children:"options.checkFalsy"})," are deprecated options.\nThey are aliases to setting ",(0,l.jsx)(n.code,{children:"options.values"})," to ",(0,l.jsx)(n.code,{children:"null"})," or ",(0,l.jsx)(n.code,{children:"falsy"}),"."]}),"\n",(0,l.jsxs)(n.p,{children:["If ",(0,l.jsx)(n.code,{children:"options"})," is ",(0,l.jsx)(n.code,{children:"false"}),", then the field won't be optional."]}),"\n",(0,l.jsxs)(n.admonition,{type:"info",children:[(0,l.jsxs)(n.p,{children:["Unlike validators and sanitizers, ",(0,l.jsx)(n.code,{children:".optional()"})," is not positional: it'll affect how values are interpreted,\nno matter where it happens in the chain."]}),(0,l.jsx)(n.p,{children:"For example, there are no differences between this:"}),(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"body('json_string').isLength({ max: 100 }).isJSON().optional().\n"})}),(0,l.jsx)(n.p,{children:"and this:"}),(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"body('json_string').optional().isLength({ max: 100 }).isJSON().\n"})})]}),"\n",(0,l.jsx)(n.h3,{id:"withmessage",children:(0,l.jsx)(n.code,{children:".withMessage()"})}),"\n",(0,l.jsx)(n.pre,{children:(0,l.jsx)(n.code,{className:"language-ts",children:"withMessage(message: any): ValidationChain\n"})}),"\n",(0,l.jsx)(n.p,{children:"Sets the error message used by the previous validator."})]})}function p(e={}){const{wrapper:n}={...(0,d.a)(),...e.components};return n?(0,l.jsx)(n,{...e,children:(0,l.jsx)(u,{...e})}):u(e)}},1670:(e,n,i)=>{i.d(n,{Z:()=>r,a:()=>c});var l=i(7378);const d={},s=l.createContext(d);function c(e){const n=l.useContext(s);return l.useMemo((function(){return"function"==typeof e?e(n):{...n,...e}}),[n,e])}function r(e){let n;return n=e.disableParentContext?"function"==typeof e.components?e.components(d):e.components||d:c(e.components),l.createElement(s.Provider,{value:n},e.children)}}}]);
\ No newline at end of file
diff --git a/assets/js/runtime~main.d601d85f.js b/assets/js/runtime~main.7ebb170a.js
similarity index 99%
rename from assets/js/runtime~main.d601d85f.js
rename to assets/js/runtime~main.7ebb170a.js
index b175e25..9e98eb2 100644
--- a/assets/js/runtime~main.d601d85f.js
+++ b/assets/js/runtime~main.7ebb170a.js
@@ -1 +1 @@
-(()=>{"use strict";var e,a,d,f,c={},b={};function r(e){var a=b[e];if(void 0!==a)return a.exports;var d=b[e]={id:e,loaded:!1,exports:{}};return c[e].call(d.exports,d,d.exports,r),d.loaded=!0,d.exports}r.m=c,r.c=b,e=[],r.O=(a,d,f,c)=>{if(!d){var b=1/0;for(i=0;icontains()contains(elem: any, options?: {
ignoreCase?: boolean;
minOccurrences?: number;
}): ValidationChain
equals()
equals(comparison: string): ValidationChain
+isAbaRouting()
+isAbaRouting(): ValidationChain
isAfter()
isAfter(dateOrOptions?: string | {
comparisonDate?: string;
}): ValidationChain
isAlpha()
@@ -112,6 +114,7 @@ isAlpha()'en-ZA'
'en-ZM''es-ES''eo''fa-AF''fa-IR''fi-FI'isAlpha
'en-ZA''en-ZM''es-ES''eo''fa-AF''fa-IR''fi-FI'isLicen
'de-DE''de-LI''en-NI''en-PK''es-AR''fi-FI''hu-HU'isMobile
'en-LS''en-MT''en-MU''en-MW''en-NA''en-NG''en-NZ'isPas
'TR''UA''US''ZA'isPort()
isPort(): ValidationChain
@@ -710,6 +717,7 @@ isTaxID()'en-GB'
'en-IE''en-US''es-AR''es-ES''et-EE''fi-FI'isTaxID()'sk-SK'
'sl-SI''sv-SE''uk-UA'isTime()
isTime(options: {
hourFormat?: 'hour24' | 'hour12';
mode?: 'default' | 'withSeconds';
}): ValidationChain
isURL()
-isURL(options?: {
protocols?: URLProtocol[];
require_tld?: boolean;
require_protocol?: boolean;
require_host?: boolean;
require_port?: boolean;
require_valid_protocol?: boolean;
allow_underscores?: boolean;
host_whitelist?: (string | RegExp)[];
host_blacklist?: (string | RegExp)[];
allow_trailing_dot?: boolean;
allow_protocol_relative_urls?: boolean;
disallow_auth?: boolean;
validate_length?: boolean;
allow_fragments?: boolean;
allow_query_components?: boolean;
}): ValidationChain
+isURL(options?: {
require_tld?: boolean;
allow_underscores?: boolean;
allow_trailing_dot?: boolean;
allow_numeric_tld?: boolean;
allow_wildcard?: boolean;
ignore_max_length?: boolean;
protocols?: URLProtocol[];
require_protocol?: boolean;
require_host?: boolean;
require_port?: boolean;
require_valid_protocol?: boolean;
host_whitelist?: (string | RegExp)[];
host_blacklist?: (string | RegExp)[];
allow_protocol_relative_urls?: boolean;
disallow_auth?: boolean;
validate_length?: boolean;
allow_fragments?: boolean;
allow_query_components?: boolean;
}): ValidationChain
isUUID()
isUUID(version?: UUIDVersion): ValidationChain
Possible values of UUIDVersion
@@ -745,11 +754,13 @@ isUUID()
3457'1''2''3''4''5''7''all'
isUppercase()
diff --git a/docs/next/api/validation-result/index.html b/docs/next/api/validation-result/index.html
index 380286c..05c6a6f 100644
--- a/docs/next/api/validation-result/index.html
+++ b/docs/next/api/validation-result/index.html
@@ -6,7 +6,7 @@
Errors and Validation Results | express-validator
-
+
diff --git a/docs/next/architecture/index.html b/docs/next/architecture/index.html
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Architecture | express-validator
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diff --git a/docs/next/category/guides/index.html b/docs/next/category/guides/index.html
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express-validator guides | express-validator
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diff --git a/docs/next/category/migrating/index.html b/docs/next/category/migrating/index.html
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Migration guides | express-validator
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Customizing express-validator | express-validator
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Field Selection | express-validator
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Getting Started | express-validator
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diff --git a/docs/next/guides/manually-running/index.html b/docs/next/guides/manually-running/index.html
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Manually running validations | express-validator
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Schema validation | express-validator
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diff --git a/docs/next/guides/validation-chain/index.html b/docs/next/guides/validation-chain/index.html
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The Validation Chain | express-validator
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express-validator | express-validator
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diff --git a/docs/next/migration-v5-to-v6/index.html b/docs/next/migration-v5-to-v6/index.html
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Migration from v5 to v6 | express-validator
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Migration from v6 to v7 | express-validator
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diff --git a/index.html b/index.html
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express-validator
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diff --git a/search/index.html b/search/index.html
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Search the documentation | express-validator
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