Filter data from array of Dictionary using predicate iOS SDK

Question

Hello guys i have an array of dictionary, can you guys tell me how can i filter this data based on dictionary keys.

(
    {
    "mall_id" = M0550;
    "mall_name" = "Amrita Shopping Complex";
},
    {
    "mall_id" = M0509;
    "mall_name" = "Ashoka Market";
},
    {
    "mall_id" = M0943;
    "mall_name" = "Biju Pattnaik Commercial Complex";
},
    {
    "mall_id" = M0457;
    "mall_name" = "BMC Bhawani Mall";
},
    {
    "mall_id" = M0460;
    "mall_name" = "BMC Keshari Mall";
},
    {
    "mall_id" = M0571;
    "mall_name" = "BMC Market Complex";
},
    {
    "mall_id" = M0453;
    "mall_name" = "Forum Mart";
},
    {
    "mall_id" = M0609;
    "mall_name" = "Indradhanu Market";
},
    {
    "mall_id" = M0558;
    "mall_name" = "Kalyani Plaza Market Complex";
},
    {
    "mall_id" = M0463;
    "mall_name" = "Maa Barabhuja Mall";
},
    {
    "mall_id" = M0553;
    "mall_name" = "Mahaveer Complex";
},
    {
    "mall_id" = M0570;
    "mall_name" = "Market Building";
},
    {
    "mall_id" = M0452;
    "mall_name" = "Pal Heights Mall";
},
    {
    "mall_id" = M0466;
    "mall_name" = "Priyadarshini Market Complex";
},
    {
    "mall_id" = M0677;
    "mall_name" = "Ruchika Market";
},
    {
    "mall_id" = M0504;
    "mall_name" = "Shubham Market Complex";
},
    {
    "mall_id" = M0564;
    "mall_name" = "Subhadra Complex";
},
    {
    "mall_id" = M0559;
    "mall_name" = "Sultania Shopping Complex";
},
    {
    "mall_id" = M0552;
    "mall_name" = "Tathastu Complex";
},
    {
    "mall_id" = M0568;
    "mall_name" = "Western Tower Market Building";
}
)

what i want to achieve, whenever i type anything in search bar it will check mall_name key and return matching values in array.

Thanks and Regards

Possible duplicate of Filter Array with dictionaries using NSPredicate — Saurabh Prajapati
– Saurabh Prajapati, Commented Jul 11, 2017 at 6:23
you can check it at stackoverflow.com/questions/12084318/… — Saurabh Prajapati
– Saurabh Prajapati, Commented Jul 11, 2017 at 6:24
I have tried that link but not working for me. @SaurabhPrajapati — sanjeet
– sanjeet, Commented Jul 11, 2017 at 6:31

iOS_MIB · Accepted Answer · 2017-07-11 06:44:20Z

20

This will give you your desired output

Objective - C

NSArray *filteredData = [yourArrayContainingDictionary filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"(mall_name contains[c] %@)", searchText]];

Swift

let filteredData = yourArrayContainingDictionary.filter{
    let string = $0["mall_name"] as! String

    return string.hasPrefix("searchText")
}

Hope this helps you :)

edited Jul 11, 2017 at 6:44

answered Jul 11, 2017 at 6:27

iOS_MIB

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1 Comment

Anand Nanavaty Over a year ago

I have face this similar issue, this solution worked for me. Thank you.

Tejas Ardeshna · Accepted Answer · 2017-07-12 06:12:40Z

11

Try this one. (Predicate works like SQL queries)

Obj C

 NSArray *filterArray = [sourceArray filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"(mall_name contains[c] %@)", searchText]];

Swift

var filterArray: [Any] = sourceArray.filter { NSPredicate(format: "(mall_name contains[c] %@)", searchText).evaluate(with: $0) }

It will return entries whose name contain the search string.

edited Jul 12, 2017 at 6:12

answered Jul 11, 2017 at 6:32

Tejas Ardeshna

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Comments

PSS · Accepted Answer · 2017-07-11 07:38:45Z

4

Use this for you solution

NSArray *filtered = [yourArrayOfDictionary filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"(mall_name contains[c] %@)", <your search text from search bar>]];

edited Jul 11, 2017 at 7:38

answered Jul 11, 2017 at 6:36

PSS

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Comments

Oleg Danu · Accepted Answer · 2017-07-11 06:39:08Z

2

Here are my 2 versions using predicate and the classical one:

let dict = [
    [
        "mall_id": 1,
        "mall_name": "Amrita Shopping Complex"
    ],
    [
        "mall_id": 2,
        "mall_name": "Ashoka Market"
    ] ]

// Example using Predicate

let mallNamePredicate = NSPredicate(format: "mall_name contains %@", "Ashoka")
let filteredWithPredicate = (dict as NSArray).filtered(using: mallNamePredicate)

// Classical filter example 
let filtered = dict.filter { pair in
    guard let mallName = pair["mall_name"] as? String else { return false }
    return mallName.hasPrefix("Ashoka")
}

answered Jul 11, 2017 at 6:39

Oleg Danu

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Comments

Amal T S · Accepted Answer · 2017-07-11 06:25:10Z

1

this gives you an array of dictionaries with requiredMallID only

 NSArray *filtered = [array_with_dict filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"(mall_id == %@)", requiredMallID]];

For example,

NSArray *filtered = [array_with_dict filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"(mall_id == %@)", "M0550"]];

gives you

    (
        {
        "mall_id" = M0550;
        "mall_name" = "Amrita Shopping Complex";
    } 
)

answered Jul 11, 2017 at 6:25

Amal T S

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Comments

Miti · Accepted Answer · 2017-07-11 06:31:20Z

1

NSArray *filtered = [arrName filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"(mall_name == %@)", requiredMailName]];

answered Jul 11, 2017 at 6:31

Miti

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Vignesh Davins · Accepted Answer · 2017-07-11 06:36:38Z

1

 NSArray *filtered = [array_with_dict filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"(mall_id == %@)", wantedMallID]];

answered Jul 11, 2017 at 6:36

Vignesh Davins

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Comments

Suhit Patil · Accepted Answer · 2017-07-11 06:48:08Z

1

More swifty way of doing this would be something like

let mallArray  = [
    [
        "mall_id": "M0550",
        "mall_name": "Amrita Shopping Complex"
    ],
    [
        "mall_id": "M0509",
        "mall_name": "Ashoka Market"
    ]
]

func isMatching(_ searchText: String) -> [[String: Any]] {
    let filteredArray = mallArray.filter {
        return $0["mall_name"]!.contains(searchText)
    }
    return filteredArray
}

let malls = isMatching("Ashoka")
print(malls)

answered Jul 11, 2017 at 6:48

Suhit Patil

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Comments

SteveCaine · Accepted Answer · 2022-05-09 14:57:15Z

0

He wants to search on partial matches on mall_name, not mall_id, continually updating as users type into the search bar. So correct solutions are those with this:

[NSPredicate predicateWithFormat:@"(mall_name contains[c] %@)", searchText]

... not 'mall_id', not @"(xxx == %@)", and the 'contains[c]' gives him case-insensitive matches.

answered May 9, 2022 at 14:57

SteveCaine

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