CODEWITHSUNDEEP
meteormeteor-autoformmeteor-collection2
Behrouz Riahi
Behrouz Riahi

Reputation: 1791

how to set a default value to element in a collection of type [String]?

i have quickform once the submit button clicked, this method is fired

submitPost: function (app) {
    check(app, {
      title: String,
      description: String,
      category: String,
      price: Number
    });
    var knownId = Products.insert(app);
    Products.update({ _id: knownId }, { $set:{screenShots: scs, previewImage: pi, sourceCode: zip }});

  }

the submit button wasn't working when i didn't give "screenShots, previewImage, and sourceCode" a default values in a collection.

Once i gave them a default value like it is shown below

previewImage: {
    type: String,
    defaultValue: "jjj",
  },
   sourceCode: {
    type: String,
    defaultValue: "jjj",
  },
  screenShots: {
    type: [String],
    autoValue: function() {
      return [];
    }
  },

now the submit button in the form is working and the update method is triggered. it updates both "previewImage and sourcCode" but "screenShots" is still empty.

am not sure but i believe the problem has to do with autoValue which i should make it a default value, but how do i give an element that of type array of string a default value?

or the problem has to do with something else?

Upvotes: 2

Views: 1391

Answers (2)

MrE
MrE

Reputation: 20798

use optional: true in the schema if the value is optional, and it will pass check if it is empty.

Upvotes: 1

Pankaj Jatav
Pankaj Jatav

Reputation: 2184

The autoValue option is provided by the SimpleSchema package and is documented there. Collection2 adds the following properties to this for any autoValue function that is called as part of a C2 database operation:

  • isInsert: True if it's an insert operation
  • isUpdate: True if it's an update operation
  • isUpsert: True if it's an upsert operation (either upsert() or upsert: true)

So If you want to provide the autoValue while updating you have to use isUpdate in your schema like this.

createdAt: {
    type: Date,
    autoValue: function() {
      if (this.isInsert) {
        return new Date();
      } else if (this.isUpsert) {
        return {$setOnInsert: new Date()};
      } else {
        this.unset();  // Prevent user from supplying their own value
      }
    }
},

So your schema will be something like this:

previewImage: {
    type: String,
    defaultValue: function() {
         if (this.isInsert) {
            return 'fff';
         } else if (this.isUpdate) {
            return 'fff';
         }
  },
   sourceCode: {
    type: String,
    defaultValue:function() {
         if (this.isInsert) {
            return 'jjj';
         } else if (this.isUpdate) {
            return 'jjj';
         }
  },
  screenShots: {
    type: [String],
    autoValue: function() {
         if (this.isInsert) {
            return [];
         } else if (this.isUpdate) {
            return [];
         }
    }
},

For more info please check this

Upvotes: 1

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