AJV's validator returns always true value

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I need to validate JSON files in following way:

const setupSchema = fs.readFileSync(schemaDir +'/setup.json');

and compiling:

const setupValidator = ajv.compile(setupSchema);

My issue is that line:

console.log( setupValidator('') );

Always returns true even as validator's parameter is empty string like above. I suppose that the way of loading is bad but... need ask smarter people than me.

edited Jan 3 at 16:51

asked Jan 3 at 16:37

Tomasz Waszczyk

55821227

I may help if you could post the JSON schema too

– customcommander
Jan 3 at 20:08

add a comment |

I need to validate JSON files in following way:

const setupSchema = fs.readFileSync(schemaDir +'/setup.json');

and compiling:

const setupValidator = ajv.compile(setupSchema);

My issue is that line:

console.log( setupValidator('') );

Always returns true even as validator's parameter is empty string like above. I suppose that the way of loading is bad but... need ask smarter people than me.

edited Jan 3 at 16:51

asked Jan 3 at 16:37

Tomasz Waszczyk

55821227

I may help if you could post the JSON schema too

– customcommander
Jan 3 at 20:08

add a comment |

I need to validate JSON files in following way:

const setupSchema = fs.readFileSync(schemaDir +'/setup.json');

and compiling:

const setupValidator = ajv.compile(setupSchema);

My issue is that line:

console.log( setupValidator('') );

Always returns true even as validator's parameter is empty string like above. I suppose that the way of loading is bad but... need ask smarter people than me.

edited Jan 3 at 16:51

asked Jan 3 at 16:37

Tomasz Waszczyk

55821227

I need to validate JSON files in following way:

const setupSchema = fs.readFileSync(schemaDir +'/setup.json');

and compiling:

const setupValidator = ajv.compile(setupSchema);

My issue is that line:

console.log( setupValidator('') );

Always returns true even as validator's parameter is empty string like above. I suppose that the way of loading is bad but... need ask smarter people than me.

javascript validation ajv

edited Jan 3 at 16:51

asked Jan 3 at 16:37

Tomasz Waszczyk

55821227

edited Jan 3 at 16:51

asked Jan 3 at 16:37

Tomasz Waszczyk

55821227

edited Jan 3 at 16:51

asked Jan 3 at 16:37

Tomasz Waszczyk

55821227

asked Jan 3 at 16:37

Tomasz Waszczyk

55821227

asked Jan 3 at 16:37

Tomasz Waszczyk

55821227

I may help if you could post the JSON schema too

– customcommander
Jan 3 at 20:08

add a comment |

I may help if you could post the JSON schema too

– customcommander
Jan 3 at 20:08

I may help if you could post the JSON schema too

– customcommander
Jan 3 at 20:08

add a comment |

2 Answers
2

active

oldest

votes

From the quick start guide: (http://json-schema.org/)

The JSON document being validated or described we call the instance,
and the document containing the description is called the schema.

The most basic schema is a blank JSON object, which constrains
nothing, allows anything, and describes nothing:

{}

You can apply constraints on an instance by adding validation keywords
to the schema. For example, the “type” keyword can be used to restrict
an instance to an object, array, string, number, boolean, or null:

{ "type": "string" }

This means that if your schema is either an empty object or does not use the JSON Schema vocabulary, Ajv's compile function will always generate a validation function that always passes:

var Ajv = require('ajv');

var ajv = new Ajv({allErrors: true});



var schema = {

    foo: 'bar',

    bar: 'baz',

    baz: 'baz'

};



var validate = ajv.compile(schema);



validate({answer: 42}); //=> true

validate('42'); //=> true

validate(42); //=> true

Perhaps your setup.json is either incorrectly loaded or isn't a schema as per the JSON Schema specification.

edited Jan 4 at 8:16

answered Jan 3 at 20:20

customcommander

2,49411225

Yes. I forgot about: const setupSchema = JSON.parse(fs.readFileSync(schemaDir +'/setup.json'));

– Tomasz Waszczyk
Jan 4 at 13:51

add a comment |

// You should specify encoding while reading the file otherwise it will return raw buffer

const setupSchema = fs.readFileSync(schemaDir +'/setup.json', "utf-8");

// setupSchema is a JSON string, so you need to parse it before passing it to compile as compile function accepts an object

const setupValidator = ajv.compile(JSON.parse(setupSchema));

console.log( setupValidator('') ) // Now, this will return false;

Instead of doing above, you can just simply require the json file using require.

const setupSchema = require(schemaDir +'/setup.json');

const setupValidator = ajv.compile(setupSchema);

console.log( setupValidator('') );

answered Jan 3 at 17:54

Surendra Kumar B

211

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

From the quick start guide: (http://json-schema.org/)

The JSON document being validated or described we call the instance,
and the document containing the description is called the schema.

The most basic schema is a blank JSON object, which constrains
nothing, allows anything, and describes nothing:

{}

You can apply constraints on an instance by adding validation keywords
to the schema. For example, the “type” keyword can be used to restrict
an instance to an object, array, string, number, boolean, or null:

{ "type": "string" }

This means that if your schema is either an empty object or does not use the JSON Schema vocabulary, Ajv's compile function will always generate a validation function that always passes:

var Ajv = require('ajv');

var ajv = new Ajv({allErrors: true});



var schema = {

    foo: 'bar',

    bar: 'baz',

    baz: 'baz'

};



var validate = ajv.compile(schema);



validate({answer: 42}); //=> true

validate('42'); //=> true

validate(42); //=> true

Perhaps your setup.json is either incorrectly loaded or isn't a schema as per the JSON Schema specification.

edited Jan 4 at 8:16

answered Jan 3 at 20:20

customcommander

2,49411225

Yes. I forgot about: const setupSchema = JSON.parse(fs.readFileSync(schemaDir +'/setup.json'));

– Tomasz Waszczyk
Jan 4 at 13:51

add a comment |

From the quick start guide: (http://json-schema.org/)

The JSON document being validated or described we call the instance,
and the document containing the description is called the schema.

The most basic schema is a blank JSON object, which constrains
nothing, allows anything, and describes nothing:

{}

You can apply constraints on an instance by adding validation keywords
to the schema. For example, the “type” keyword can be used to restrict
an instance to an object, array, string, number, boolean, or null:

{ "type": "string" }

This means that if your schema is either an empty object or does not use the JSON Schema vocabulary, Ajv's compile function will always generate a validation function that always passes:

var Ajv = require('ajv');

var ajv = new Ajv({allErrors: true});



var schema = {

    foo: 'bar',

    bar: 'baz',

    baz: 'baz'

};



var validate = ajv.compile(schema);



validate({answer: 42}); //=> true

validate('42'); //=> true

validate(42); //=> true

Perhaps your setup.json is either incorrectly loaded or isn't a schema as per the JSON Schema specification.

edited Jan 4 at 8:16

answered Jan 3 at 20:20

customcommander

2,49411225

Yes. I forgot about: const setupSchema = JSON.parse(fs.readFileSync(schemaDir +'/setup.json'));

– Tomasz Waszczyk
Jan 4 at 13:51

add a comment |

From the quick start guide: (http://json-schema.org/)

The JSON document being validated or described we call the instance,
and the document containing the description is called the schema.

The most basic schema is a blank JSON object, which constrains
nothing, allows anything, and describes nothing:

{}

You can apply constraints on an instance by adding validation keywords
to the schema. For example, the “type” keyword can be used to restrict
an instance to an object, array, string, number, boolean, or null:

{ "type": "string" }

This means that if your schema is either an empty object or does not use the JSON Schema vocabulary, Ajv's compile function will always generate a validation function that always passes:

var Ajv = require('ajv');

var ajv = new Ajv({allErrors: true});



var schema = {

    foo: 'bar',

    bar: 'baz',

    baz: 'baz'

};



var validate = ajv.compile(schema);



validate({answer: 42}); //=> true

validate('42'); //=> true

validate(42); //=> true

Perhaps your setup.json is either incorrectly loaded or isn't a schema as per the JSON Schema specification.

edited Jan 4 at 8:16

answered Jan 3 at 20:20

customcommander

2,49411225

From the quick start guide: (http://json-schema.org/)

The JSON document being validated or described we call the instance,
and the document containing the description is called the schema.

The most basic schema is a blank JSON object, which constrains
nothing, allows anything, and describes nothing:

{}

You can apply constraints on an instance by adding validation keywords
to the schema. For example, the “type” keyword can be used to restrict
an instance to an object, array, string, number, boolean, or null:

{ "type": "string" }

This means that if your schema is either an empty object or does not use the JSON Schema vocabulary, Ajv's compile function will always generate a validation function that always passes:

var Ajv = require('ajv');

var ajv = new Ajv({allErrors: true});



var schema = {

    foo: 'bar',

    bar: 'baz',

    baz: 'baz'

};



var validate = ajv.compile(schema);



validate({answer: 42}); //=> true

validate('42'); //=> true

validate(42); //=> true

Perhaps your setup.json is either incorrectly loaded or isn't a schema as per the JSON Schema specification.

edited Jan 4 at 8:16

answered Jan 3 at 20:20

customcommander

2,49411225

edited Jan 4 at 8:16

answered Jan 3 at 20:20

customcommander

2,49411225

answered Jan 3 at 20:20

customcommander

2,49411225

answered Jan 3 at 20:20

customcommander

2,49411225

Yes. I forgot about: const setupSchema = JSON.parse(fs.readFileSync(schemaDir +'/setup.json'));

– Tomasz Waszczyk
Jan 4 at 13:51

add a comment |

Yes. I forgot about: const setupSchema = JSON.parse(fs.readFileSync(schemaDir +'/setup.json'));

– Tomasz Waszczyk
Jan 4 at 13:51

Yes. I forgot about: const setupSchema = JSON.parse(fs.readFileSync(schemaDir +'/setup.json'));

– Tomasz Waszczyk
Jan 4 at 13:51

add a comment |

// You should specify encoding while reading the file otherwise it will return raw buffer

const setupSchema = fs.readFileSync(schemaDir +'/setup.json', "utf-8");

// setupSchema is a JSON string, so you need to parse it before passing it to compile as compile function accepts an object

const setupValidator = ajv.compile(JSON.parse(setupSchema));

console.log( setupValidator('') ) // Now, this will return false;

Instead of doing above, you can just simply require the json file using require.

const setupSchema = require(schemaDir +'/setup.json');

const setupValidator = ajv.compile(setupSchema);

console.log( setupValidator('') );

answered Jan 3 at 17:54

Surendra Kumar B

211

add a comment |

// You should specify encoding while reading the file otherwise it will return raw buffer

const setupSchema = fs.readFileSync(schemaDir +'/setup.json', "utf-8");

// setupSchema is a JSON string, so you need to parse it before passing it to compile as compile function accepts an object

const setupValidator = ajv.compile(JSON.parse(setupSchema));

console.log( setupValidator('') ) // Now, this will return false;

Instead of doing above, you can just simply require the json file using require.

const setupSchema = require(schemaDir +'/setup.json');

const setupValidator = ajv.compile(setupSchema);

console.log( setupValidator('') );

answered Jan 3 at 17:54

Surendra Kumar B

211

add a comment |

// You should specify encoding while reading the file otherwise it will return raw buffer

const setupSchema = fs.readFileSync(schemaDir +'/setup.json', "utf-8");

// setupSchema is a JSON string, so you need to parse it before passing it to compile as compile function accepts an object

const setupValidator = ajv.compile(JSON.parse(setupSchema));

console.log( setupValidator('') ) // Now, this will return false;

Instead of doing above, you can just simply require the json file using require.

const setupSchema = require(schemaDir +'/setup.json');

const setupValidator = ajv.compile(setupSchema);

console.log( setupValidator('') );

answered Jan 3 at 17:54

Surendra Kumar B

211

// You should specify encoding while reading the file otherwise it will return raw buffer

const setupSchema = fs.readFileSync(schemaDir +'/setup.json', "utf-8");

// setupSchema is a JSON string, so you need to parse it before passing it to compile as compile function accepts an object

const setupValidator = ajv.compile(JSON.parse(setupSchema));

console.log( setupValidator('') ) // Now, this will return false;

Instead of doing above, you can just simply require the json file using require.

const setupSchema = require(schemaDir +'/setup.json');

const setupValidator = ajv.compile(setupSchema);

console.log( setupValidator('') );

answered Jan 3 at 17:54

Surendra Kumar B

211

answered Jan 3 at 17:54

Surendra Kumar B

211

answered Jan 3 at 17:54

Surendra Kumar B

211

answered Jan 3 at 17:54

Surendra Kumar B

211

add a comment |

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