create new crop sizes dynamically in c - Using Umbraco And Getting Started

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Paul de Quant 403 posts 1520 karma points

Sep 04, 2017 @ 15:56

0

Create new Crop Sizes Dynamically in C#

Using Umbraco And Getting Started

Umbraco 7

Hello,

I need to create 4 crop profiles for the Image Cropper datatype dynamically in C#. How would one do this? Can this be done using the DTS?

var dt = ApplicationContext.Current.Services.DataTypeService;

Thanks

Paul

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Kevin Jump 2312 posts 14698 karma points MVP 7x c-trib

Sep 06, 2017 @ 08:07

the crop information is stored as a bit of JSON in the datatype. under the 'crops' property.

e.g.

  {
    "alias": "Hero",
    "width": 800,
    "height": 250
  },
  {
    "alias": "Featured",
    "width": 700,
    "height": 250
  }

yes you can use the datatype service to get to this. as an example (but try to avoid ApplicationContext.Current if you can)

var datatypeService = ApplicationContext.Current.Services.DataTypeService;
var dataType = datatypeService.GetDataTypeDefinitionByName("nameOfMyCropper");

if (dataType != null)
{
    var preValues = datatypeService.GetPreValuesCollectionByDataTypeId(dataType.Id)
        .FormatAsDictionary();

    if (preValues.Any(x => x.Key.InvariantEquals(crops)))
    { 
        var cropValue = preValues.SingleOrDefault(x => x.Key.InvariantEquals("crops"));
        // minipulate the crop values here
        ........ 
        cropValue.Value.Value = newCropsJsonString;
    }


    datatypeService.SavePreValues(dataType, preValues);

}

That should be a start, it might need the odd tweak as i haven't tested that code just typed it.

Kevin

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Paul de Quant 403 posts 1520 karma points

Sep 06, 2017 @ 08:39

Hi Kevin,

Thanks for this - I managed to sort it in the end just didn't get round to posting my solution yet.

Thanks for your help though.

                var services = ApplicationContext.Current.Services;

            var dt = services.DataTypeService;
            var imgCrop = dt.GetDataTypeDefinitionByName("Image Cropper");
            var preValues = dt.GetPreValuesCollectionByDataTypeId(imgCrop.Id).PreValuesAsDictionary;

            var dict = new Dictionary<string, PreValue>
            {
                { "Crops", new PreValue("[{\"alias\": \"6 by 4\",\"width\": 720,\"height\": 480}]") },
            };

            dt.SaveDataTypeAndPreValues(imgCrop, dict);

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Create new Crop Sizes Dynamically in C#