title: api platform error on post Invalid value provided (invalid IRI?)
body: <p>Working in a vuejs app with axios I have some data structured as follow:</p>
  
  <pre><code>{
    ...
    surgeries: [],//array of object
    patientDiseases: [
     {  
    date: a javascrtipt date,
    disease: /api/diseases/#id //This is a valid IRI provided by the api in a select
  }
    ] //array of object
  }
  </code></pre>
  
  <p>When I post this data set api-platform's response is Invalid value provided (invalid IRI?)</p>
  
  <p>Here is the stack trace</p>
  
  <pre><code>{
      "@context": "\/api\/contexts\/Error",
      "@type": "hydra:Error",
      "hydra:title": "An error occurred",
      "hydra:description": "Invalid value provided (invalid IRI?).",
      "trace": [{
          "namespace": "",
          "short_class": "",
          "class": "",
          "type": "",
          "function": "",
          "file": "G:\\6.programacion\\from git\\Veterinaria\\vendor\\api-platform\\core\\src\\Serializer\\AbstractItemNormalizer.php",
          "line": 177,
          "args": []
      }, {
          "namespace": "ApiPlatform\\Core\\Serializer",
          "short_class": "AbstractItemNormalizer",
          "class": "ApiPlatform\\Core\\Serializer\\AbstractItemNormalizer",
          "type": "-\u003E",
          "function": "setAttributeValue",
          "file": "G:\\6.programacion\\from git\\Veterinaria\\vendor\\symfony\\serializer\\Normalizer\\AbstractObjectNormalizer.php",
          "line": 261,
          "args": [
              ["object", "App\\Entity\\Disease"],
              ["integer", 0],
              ["string", "\/api\/diseases\/4"],
              ["string", "json"],
              ["array", {
                  "groups": ["array", [
                      ["string", "patient"]
                  ]],
                  "collection_operation_name": ["string", "post"],
                  "operation_type": ["string", "collection"],
                  "api_allow_update": ["boolean", true],
                  "resource_class": ["string", "App\\Entity\\PatientDisease"],
                  "request_uri": ["string", "\/api\/patients"],
                  "uri": ["string", "http:\/\/localhost:8000\/api\/patients"],
                  "api_denormalize": ["boolean", true],
                  "cache_key": ["string", "e83f0aaf1c78a8d5386bc220724081e1"]
              }]
          ]
      }, {
          "namespace": "Symfony\\Component\\Serializer\\Normalizer",
          "short_class": "AbstractObjectNormalizer",
          "class": "Symfony\\Component\\Serializer\\Normalizer\\AbstractObjectNormalizer",
          "type": "-\u003E",
          "function": "denormalize",
          "file": "G:\\6.programacion\\from git\\Veterinaria\\vendor\\api-platform\\core\\src\\Serializer\\AbstractItemNormalizer.php",
          "line": 132,
          "args": [
              ["string", "\/api\/diseases\/4"],
              ["string", "App\\Entity\\Disease"],
              ["string", "json"],
              ["array", {
                  "groups": ["array", [
                      ["string", "patient"]
                  ]],
                  "collection_operation_name": ["string", "post"],
                  "operation_type": ["string", "collection"],
                  "api_allow_update": ["boolean", true],
                  "resource_class": ["string", "App\\Entity\\PatientDisease"],
                  "request_uri": ["string", "\/api\/patients"],
                  "uri": ["string", "http:\/\/localhost:8000\/api\/patients"],
                  "api_denormalize": ["boolean", true],
                  "cache_key": ["string", "e83f0aaf1c78a8d5386bc220724081e1"]
              }]
          ]
      }, {
          "namespace": "ApiPlatform\\Core\\Serializer",
          "short_class": "AbstractItemNormalizer",
          "class": "ApiPlatform\\Core\\Serializer\\AbstractItemNormalizer",
          "type": "-\u003E",
          "function": "denormalize",
          "file": "G:\\6.programacion\\from git\\Veterinaria\\vendor\\api-platform\\core\\src\\Serializer\\ItemNormalizer.php",
          "line": 43,
          "args": [
              ["string", "\/api\/diseases\/4"],
              ["string", "App\\Entity\\Disease"],
              ["string", "json"],
              ["array", {
                  "groups": ["array", [
                      ["string", "patient"]
                  ]],
                  "collection_operation_name": ["string", "post"],
                  "operation_type": ["string", "collection"],
                  "api_allow_update": ["boolean", true],
                  "resource_class": ["string", "App\\Entity\\PatientDisease"],
                  "request_uri": ["string", "\/api\/patients"],
                  "uri": ["string", "http:\/\/localhost:8000\/api\/patients"],
                  "api_denormalize": ["boolean", true],
                  "cache_key": ["string", "e83f0aaf1c78a8d5386bc220724081e1"]
              }]
          ]
      }, {
          "namespace": "ApiPlatform\\Core\\Serializer",
          "short_class": "ItemNormalizer",
          "class": "ApiPlatform\\Core\\Serializer\\ItemNormalizer",
          "type": "-\u003E",
          "function": "denormalize",
          "file": "G:\\6.programacion\\from git\\Veterinaria\\vendor\\symfony\\serializer\\Serializer.php",
          "line": 177,
          "args": [
              ["string", "\/api\/diseases\/4"],
              ["string", "App\\Entity\\Disease"],
              ["string", "json"],
              ["array", {
                  "groups": ["array", [
                      ["string", "patient"]
                  ]],
                  "collection_operation_name": ["string", "post"],
                  "operation_type": ["string", "collection"],
                  "api_allow_update": ["boolean", true],
                  "resource_class": ["string", "App\\Entity\\PatientDisease"],
                  "request_uri": ["string", "\/api\/patients"],
                  "uri": ["string", "http:\/\/localhost:8000\/api\/patients"],
                  "api_denormalize": ["boolean", true],
                  "cache_key": ["string", "e83f0aaf1c78a8d5386bc220724081e1"]
              }]
          ]
      }, {
          "namespace": "Symfony\\Component\\Serializer",
          "short_class": "Serializer",
          "class": "Symfony\\Component\\Serializer\\Serializer",
          "type": "-\u003E",
          "function": "denormalize",
          "file": "G:\\6.programacion\\from git\\Veterinaria\\vendor\\symfony\\serializer\\Normalizer\\AbstractObjectNormalizer.php",
          "line": 334,
          "args": [
              ["string", "\/api\/diseases\/4"],
              ["string", "App\\Entity\\Disease"],
              ["string", "json"],
              ["array", {
                  "groups": ["array", [
                      ["string", "patient"]
                  ]],
                  "collection_operation_name": ["string", "post"],
                  "operation_type": ["string", "collection"],
                  "api_allow_update": ["boolean", true],
                  "resource_class": ["string", "App\\Entity\\PatientDisease"],
                  "request_uri": ["string", "\/api\/patients"],
                  "uri": ["string", "http:\/\/localhost:8000\/api\/patients"],
                  "api_denormalize": ["boolean", true],
                  "cache_key": ["string", "e83f0aaf1c78a8d5386bc220724081e1"]
              }]
          ]
      }, {
          "namespace": "Symfony\\Component\\Serializer\\Normalizer",
          "short_class": "AbstractObjectNormalizer",
          "class": "Symfony\\Component\\Serializer\\Normalizer\\AbstractObjectNormalizer",
          "type": "-\u003E",
          "function": "validateAndDenormalize",
          "file": "G:\\6.programacion\\from git\\Veterinaria\\vendor\\symfony\\serializer\\Normalizer\\AbstractObjectNormalizer.php",
          "line": 259,
          "args": [
              ["string", "App\\Entity\\PatientDisease"],
              ["string", "disease"],
              ["string", "\/api\/diseases\/4"],
              ["string", "json"],
              ["array", {
                  "groups": ["array", [
                      ["string", "patient"]
                  ]],
                  "collection_operation_name": ["string", "post"],
                  "operation_type": ["string", "collection"],
                  "api_allow_update": ["boolean", true],
                  "resource_class": ["string", "App\\Entity\\PatientDisease"],
                  "request_uri": ["string", "\/api\/patients"],
                  "uri": ["string", "http:\/\/localhost:8000\/api\/patients"],
                  "api_denormalize": ["boolean", true],
                  "cache_key": ["string", "e83f0aaf1c78a8d5386bc220724081e1"]
              }]
          ]
      }, {
          "namespace": "Symfony\\Component\\Serializer\\Normalizer",
          "short_class": "AbstractObjectNormalizer",
          "class": "Symfony\\Component\\Serializer\\Normalizer\\AbstractObjectNormalizer",
          "type": "-\u003E",
          "function": "denormalize",
          "file": "G:\\6.programacion\\from git\\Veterinaria\\vendor\\symfony\\serializer\\Serializer.php",
          "line": 177,
          "args": [
              ["array", {
                  "patient": ["array", []],
                  "date": ["string", "2018-11-27T13:03:00.000Z"],
                  "disease": ["string", "\/api\/diseases\/4"]
              }],
              ["string", "App\\Entity\\PatientDisease"],
              ["string", "json"],
              ["array", {
                  "groups": ["array", [
                      ["string", "patient"]
                  ]],
                  "collection_operation_name": ["string", "post"],
                  "operation_type": ["string", "collection"],
                  "api_allow_update": ["boolean", true],
                  "resource_class": ["string", "App\\Entity\\PatientDisease"],
                  "request_uri": ["string", "\/api\/patients"],
                  "uri": ["string", "http:\/\/localhost:8000\/api\/patients"],
                  "api_denormalize": ["boolean", true],
                  "cache_key": ["string", "e83f0aaf1c78a8d5386bc220724081e1"]
              }]
          ]
      }, {
          "namespace": "Symfony\\Component\\Serializer",
          "short_class": "Serializer",
          "class": "Symfony\\Component\\Serializer\\Serializer",
          "type": "-\u003E",
          "function": "denormalize",
          "file": "G:\\6.programacion\\from git\\Veterinaria\\vendor\\api-platform\\core\\src\\Serializer\\AbstractItemNormalizer.php",
          "line": 307,
          "args": [
              ["array", {
                  "patient": ["array", []],
                  "date": ["string", "2018-11-27T13:03:00.000Z"],
                  "disease": ["string", "\/api\/diseases\/4"]
              }],
              ["string", "App\\Entity\\PatientDisease"],
              ["string", "json"],
              ["array", {
                  "groups": ["array", [
                      ["string", "patient"]
                  ]],
                  "collection_operation_name": ["string", "post"],
                  "operation_type": ["string", "collection"],
                  "api_allow_update": ["boolean", true],
                  "resource_class": ["string", "App\\Entity\\PatientDisease"],
                  "request_uri": ["string", "\/api\/patients"],
                  "uri": ["string", "http:\/\/localhost:8000\/api\/patients"],
                  "api_denormalize": ["boolean", true],
                  "cache_key": ["string", "e83f0aaf1c78a8d5386bc220724081e1"]
              }]
          ]
      }, {
          "namespace": "ApiPlatform\\Core\\Serializer",
          "short_class": "AbstractItemNormalizer",
          "class": "ApiPlatform\\Core\\Serializer\\AbstractItemNormalizer",
          "type": "-\u003E",
          "function": "denormalizeRelation",
          "file": "G:\\6.programacion\\from git\\Veterinaria\\vendor\\api-platform\\core\\src\\Serializer\\AbstractItemNormalizer.php",
          "line": 272,
          "args": [
              ["string", "patientDiseases"],
              ["object", "ApiPlatform\\Core\\Metadata\\Property\\PropertyMetadata"],
              ["string", "App\\Entity\\PatientDisease"],
              ["array", {
                  "patient": ["array", []],
                  "date": ["string", "2018-11-27T13:03:00.000Z"],
                  "disease": ["string", "\/api\/diseases\/4"]
              }],
              ["string", "json"],
              ["array", {
                  "groups": ["array", [
                      ["string", "patient"]
                  ]],
                  "collection_operation_name": ["string", "post"],
                  "operation_type": ["string", "collection"],
                  "api_allow_update": ["boolean", true],
                  "resource_class": ["string", "App\\Entity\\PatientDisease"],
                  "request_uri": ["string", "\/api\/patients"],
                  "uri": ["string", "http:\/\/localhost:8000\/api\/patients"],
                  "api_denormalize": ["boolean", true],
                  "cache_key": ["string", "e83f0aaf1c78a8d5386bc220724081e1"]
              }]
          ]
      }, {
          "namespace": "ApiPlatform\\Core\\Serializer",
          "short_class": "AbstractItemNormalizer",
          "class": "ApiPlatform\\Core\\Serializer\\AbstractItemNormalizer",
          "type": "-\u003E",
          "function": "denormalizeCollection",
          "file": "G:\\6.programacion\\from git\\Veterinaria\\vendor\\api-platform\\core\\src\\Serializer\\AbstractItemNormalizer.php",
          "line": 204,
          "args": [
              ["string", "patientDiseases"],
              ["object", "ApiPlatform\\Core\\Metadata\\Property\\PropertyMetadata"],
              ["object", "Symfony\\Component\\PropertyInfo\\Type"],
              ["string", "App\\Entity\\PatientDisease"],
              ["array", [
                  ["array", {
                      "patient": ["array", []],
                      "date": ["string", "2018-11-27T13:03:00.000Z"],
                      "disease": ["string", "\/api\/diseases\/4"]
                  }]
              ]],
              ["string", "json"],
              ["array", {
                  "groups": ["array", [
                      ["string", "patient"]
                  ]],
                  "collection_operation_name": ["string", "post"],
                  "operation_type": ["string", "collection"],
                  "api_allow_update": ["boolean", false],
                  "resource_class": ["string", "App\\Entity\\Patient"],
                  "request_uri": ["string", "\/api\/patients"],
                  "uri": ["string", "http:\/\/localhost:8000\/api\/patients"],
                  "api_denormalize": ["boolean", true],
                  "cache_key": ["string", "e83f0aaf1c78a8d5386bc220724081e1"]
              }]
          ]
      }, {
          "namespace": "ApiPlatform\\Core\\Serializer",
          "short_class": "AbstractItemNormalizer",
          "class": "ApiPlatform\\Core\\Serializer\\AbstractItemNormalizer",
          "type": "-\u003E",
          "function": "setAttributeValue",
          "file": "G:\\6.programacion\\from git\\Veterinaria\\vendor\\symfony\\serializer\\Normalizer\\AbstractObjectNormalizer.php",
          "line": 261,
          "args": [
              ["object", "App\\Entity\\Patient"],
              ["string", "patientDiseases"],
              ["array", [
                  ["array", {
                      "patient": ["array", []],
                      "date": ["string", "2018-11-27T13:03:00.000Z"],
                      "disease": ["string", "\/api\/diseases\/4"]
                  }]
              ]],
              ["string", "json"],
              ["array", {
                  "groups": ["array", [
                      ["string", "patient"]
                  ]],
                  "collection_operation_name": ["string", "post"],
                  "operation_type": ["string", "collection"],
                  "api_allow_update": ["boolean", false],
                  "resource_class": ["string", "App\\Entity\\Patient"],
                  "request_uri": ["string", "\/api\/patients"],
                  "uri": ["string", "http:\/\/localhost:8000\/api\/patients"],
                  "api_denormalize": ["boolean", true],
                  "cache_key": ["string", "e83f0aaf1c78a8d5386bc220724081e1"]
              }]
          ]
      }, {
          "namespace": "Symfony\\Component\\Serializer\\Normalizer",
          "short_class": "AbstractObjectNormalizer",
          "class": "Symfony\\Component\\Serializer\\Normalizer\\AbstractObjectNormalizer",
          "type": "-\u003E",
          "function": "denormalize",
          "file": "G:\\6.programacion\\from git\\Veterinaria\\vendor\\api-platform\\core\\src\\Serializer\\AbstractItemNormalizer.php",
          "line": 132,
          "args": [
              ["array", {
                  "name": ["string", "perro"],
                  "age": ["integer", 8],
                  "specie": ["string", "\/api\/species\/1"],
                  "breed": ["string", "\/api\/breeds\/1"],
                  "birthdate": ["string", "2018-11-07T13:03:00.000Z"],
                  "entrydate": ["string", "2018-11-23T13:03:03.182Z"],
                  "gender": ["string", "\/api\/genders\/1"],
                  "temperament": ["string", "\/api\/temperaments\/1"],
                  "chip": ["string", "asdasd2asd"],
                  "coatType": ["string", "\/api\/coat_types\/1"],
                  "coatColor": ["string", "\/api\/coat_colors\/1"],
                  "details": ["string", "m.cxvczxjkcxzvjklczv"],
                  "status": ["string", "\/api\/status_patients\/1"],
                  "client": ["array", {
                      "name": ["string", "Juan"],
                      "lastName": ["string", "Alberto"],
                      "secondSurname": ["string", "Asdasd"],
                      "email": ["string", "asdasd@asdasd.as"],
                      "phone1": ["string", "234234"],
                      "phone2": ["string", "24234"],
                      "clientType": ["string", "\/api\/client_types\/1"],
                      "sector": ["string", "\/api\/sectors\/1"],
                      "identificationCard": ["string", "98989898989"],
                      "address": ["string", "sdfsdfsdfs sdf sd5f sd"]
                  }],
                  "isActive": ["boolean", true],
                  "surgeries": ["array", [
                      ["array", {
                          "name": ["string", "sdfa fsdf"],
                          "date": ["string", "2018-11-30T13:03:00.000Z"],
                          "patient": ["array", []]
                      }],
                      ["array", {
                          "name": ["string", "sdfa fsdf"],
                          "date": ["string", "2018-11-30T13:03:00.000Z"],
                          "patient": ["array", []]
                      }],
                      ["array", {
                          "name": ["string", "sdfa fsdf"],
                          "date": ["string", "2018-11-30T13:03:00.000Z"],
                          "patient": ["array", []]
                      }],
                      ["array", {
                          "name": ["string", "sdfa fsdf"],
                          "date": ["string", "2018-11-30T13:03:00.000Z"],
                          "patient": ["array", []]
                      }]
                  ]],
                  "patientDiseases": ["array", [
                      ["array", {
                          "patient": ["array", []],
                          "date": ["string", "2018-11-27T13:03:00.000Z"],
                          "disease": ["string", "\/api\/diseases\/4"]
                      }]
                  ]]
              }],
              ["string", "App\\Entity\\Patient"],
              ["string", "json"],
  </code></pre>
  
  <p>As you can see the IRI is present in the request in every object of the array but api-platform still raising an error of Invalid IRI.</p>
  
  <p>The entities are configured with cascade persist option</p>
  
  <p>Do you have any advice on how could I resolve this situation?</p>
  
  <p>Thanks in advance</p>